Advantages of Brass Ball Valve

Brass ball valves are some of the most common types that you will use in plumbing, wells, and HVAC. They are quite easy to work and install and are suitable for many applications, corrosion resistance is not a big issue. We will review several reasons why brass ball valves are so popular, where they are best used, and the difference between brass and bronze.

Why are brass ball valves so popular?

1. Easy to operate

One of the biggest benefits of brass ball valves is that they are easy to work and install. By simple handling, I mean that brass as a material is softer than others (such as stainless steel). This makes sealing easier.

Also due to the popularity of brass valves, products for sealing them are very easy to obtain. When sealing other types of metals, you often need a specific pipe tape or thread sealant. Not that these are impossible to find, but you are easier to find brass sealing products than others.

2. Lead and no leaded options

With the transition to no lead over the past few years, brass products have undergone earth-shaking changes. From a material point of view, the price of leaded brass and no-lead brass is very different, so it is a good choice to use leaded brass on non-potable water applications. This can save you a lot of money.

Brass ball valve - Yuanda valve

Where is the brass ball valve used?

The application range of brass ball valves is very wide. Most of the time, brass is a good choice. When it comes to potable water applications, lead-free brass is a good choice, unless the water is corrosive, such as high salt content. In this case, another material such as stainless steel or PVC will be better. Due to the cost of no-lead brass, other materials, such as stainless steel, which are also free of lead, have become more possible choices.

Brass ball valves are used in residential and commercial plumbing, water wells, HVAC, and many other applications. Basically, as long as the material passing through the valve is not highly corrosive, in general, brass is a good material to utilize.

>>Shop for brass ball valve here

What is the difference between brass and bronze?

Bronze and brass are easy to get confused. They look similar, have similar-sounding names, and are used for many similar applications. These materials, while sharing many positive qualities, are not identical. There is more than one difference between bronze and brass valves, but not everybody knows about them. While both materials are alloys that incorporate a generous amount of copper, they differ in price and properties.

What is Bronze?

Bronze is one of the original metal alloys. Using copper and tin, metal workers developed a material that was both strong and malleable, meaning it would not crack as easily as something like iron. Bronze has not changed very much, aside from the reduced amounts of lead and the occasional addition of manganese, aluminum, or nickel. Parts made of this material can only be manufactured by casting the material into a mold or by machining a pre-cast bronze ingot.

Bronze has a rough, porous exterior with small cavities in the surface. This is due to the casting process. However, bronze alloys with select additives can hold a polish and are not as abrasive. Bronze has many benefits, including high ductility (resists cracking), corrosion resistance, and low cost. There are tons of uses for bronze valves, including safety relief, flow direction control, shutting off flow, and more! Lead free bronze valves for potable water are available, but they must meet or exceed Clean Water Act lead restrictions.

What is Brass?

Brass ball valve

Brass is a newer material than bronze. It Is primarily copper and zinc, but is extremely versatile. There are a wide range of brass alloys with varying properties. Brass is also malleable and easy to work with. This makes it easy to cast, forge, heat extrude, or cold draw. Brass is very corrosion-resistant, much like bronze, but is susceptible to breaking down when exposed to high levels of chlorine.

The main benefit of brass valves over bronze is the much lower levels of lead present in the metal. This makes brass safe for drinking water in most cases. Another of the uses for brass valves is as shut-off valves in natural gas lines because of its low . Brass, in just about every case, is a much more effective solution than bronze, but it costs considerably more. The price disparity can be a problem for many people, but it is typically justified.

This may seem a bit esoteric, but one thing is very important and requires attention. The material composition of the ball valve is very critical. If you are buying a lower quality brass ball valve, it may contain less copper, which will make it more susceptible to corrosion in certain environments.

When it comes to closing, brass ball valves are incredible "daily" valves in many applications. Remember, if your system is corrosive or salty, you will want to look for other options such as bronze, stainless steel, or PVC. When the application requires no lead materials, you should also pay attention, because this will determine your choice.

We are Brass Ball Valve Suppliers. If you are interested in our products, please feel free to contact us.

The Ultimate Guide to Check Valves

Check valves are responsible for ensuring proper flow within a fluid system. Also known as non-return or one-way valves, check valves are specifically designed to prevent reverse flow within a pipeline.

How Does a Check Valve Work?

To really understand the question: how does a check valve work, you must first understand how they’re constructed. Most check valves are made with a body, seat, disc, and cover. Other types of check valves may come with additional parts like a spring, ball, stem, or hinge pin depending on their design.

Check valves are controlled based on a system’s flow velocity. Once the system reaches the cracking pressure or the minimum upstream pressure needed for the valve to operate, the disc will lift and allow the fluid to pass through. If the fluid pressure decreases or if the flow direction starts to reverse, the disc will automatically close the valve to keep fluid from flowing through. This helps to prevent backflow.

Since check valves rely on the pressure and flow velocity of the fluid in the system to operate, they can usually work without any automation or human interaction. With that said, check valves aren’t typically designed with any form of exterior operation mechanisms like a lever or handle.

 

Check Valve Applications

Now that you understand the basics of; how does a check valve work, we review the common applications. Check valves are commonly used for industrial pumps and fluid systems in the oil and gas industry. Chemical and power plants also use check valves to prevent reverse flow in advanced machinery. On top of that, check valves can be installed in many process systems to keep fluids of different pressures separated.

 

Check Valve Selection

While all check valves are designed to ensure proper flow direction, they’re not all the same. There are many types of check valves, and each is intended for specific application and service conditions.

The ideal check valve should be made with a material that’s compatible with the type of liquid or gas you’re working with. You should also make sure that you select the appropriate type of check valve (e.g. spring-assisted in-line check valve, silent check valve) for the application.

 

3 Common Problems in Check Valve Selection

Water Hammer

Water hammer is one of the most common check valve problems. A water hammer is a pressure surge that’s caused when a liquid or gas is forced to stop or change direction suddenly and often occurs when a valve is suddenly closed at the end of a pipeline system. This can result in both noise and vibration, which can, in turn, lead to damage and additional maintenance or repair costs.

Water hammer can be prevented, however, by using a faster-closing check valve that stops the pressure surges and shock waves that can damage and rupture equipment. Our silent check valves in particular are known for their effectiveness in preventing and in many cases eliminating water hammers.

Reverse Flow

Reverse flow is another common check valve problem and can be extremely costly, especially when it occurs at the discharge of a pump, causing the pump to spin backward.

A fast-closing and tight shut-off valve are necessary to prevent this problem, and the right spring-assisted in-line check valve will do just that, eliminating reverse flow.

Oversizing

If there is a lot of valve chatter—opening and closing of the valve repeatedly—chances are it’s due to oversizing. What’s important to remember is that check valves should be sized for the application, and not for the line size. You want the disc to be stable against the internal stop in the open position or fully closed; this will result in no repeated fluttering, and therefore no premature failure.

Keep these common problems in mind, select the right check valve for your application, and your check valves will last longer and work more effectively for your applications.

 

Takeaways

Most importantly, you need to ensure that the check valve you choose is the correct size for the application, not the line size. Selecting a valve that’s sized for the application keeps the disc stable on the internal stop when the valve is open or closed. This helps to keeps the disc from fluttering and extends the valve’s overall service life.

We are a check valve supplier, please feel free to contact us if you need them!

Structural Characteristics of Welded Ball Valves

Keep reading for more information about the structural characteristics of welded ball valves.

 

1. The design of frame shaft fixed ball of welded ball valve

 

The balls of ball valves can be divided into two kinds: fixed balls and floating balls. Domestic products generally are in the floating ball structure, the ball being tightly pressed on the sealing surface of the outlet end under the pressure of the media to reach the purpose of the seal. Once the inlet and outlet pressure difference of the valve body is large, it is often very difficult to open the valve because of the large torque. Welded ball valves adopt high-strength forge steel for stems, rotating smoothly and being supported by the stainless steel bearings coated with PTFE.

 

Since the pivot-supported stems can absorb the thrust generated by the pressure of the pipeline media and can reduce the friction between the valve balls and the valve seats, the torque operating the concave door is still very small even under the full pressure difference condition and the ball valves still switch freely.

 

2. Structure of welded ball valve

 

The valve body of the ball valve is produced by welding six partially forged shells after assembly. The structure is compact and the whole ball valve is integrated. At present, the large-caliber ball valves used in production are mostly split three-piece structures, and each part is connected by bolts. Compared with the three-piece ball valve, under the same strength, the wall thickness of the welded ball valve forge piece can be made to be very thin, the valve weight can be reduced by a quarter, and the resistance to pipeline bending and extrusion is enhanced.

 

3. The valve stem and secondary valve seat seals of welded ball valves

 

The sealing material PFFE in the upper area of the valve stem of the welded ball valve is a low-friction and aging-resistant material with long service life. The valve stem of welded ball valve is also equipped with a sealing grease injection system. Even if foreign matter enters the ball valve seat and damages the sealing surface, it can still be injected with special sealing grease through the secondary valve seat to maintain the seal. Conventional ball valves do not have a sealing grease injection structure. Once the sealing surface is damaged and internal leakage occurs, we can only replace the entire ball valve.

                                              

4. Design of rotary valve seat of welded ball valve

 

When the ball valve is nearly being fully closed or just opened, the narrow point between the ball valve and the valve seat is scoured at high speed due to the fluid being throttled into high-speed turbulent flow, which becomes the most severely worn area of the seal of the valve seat. The valve seat upstream and downstream of the welded ball valve is rotated 15 degrees by the paddles on the valve ball so that the entire sealing surface of the valve seat is washed by fluid in turn, and the same part is washed again after the valve is opened or closed 12 times. The wear of the entire valve seat remains the same and the working life is greatly extended.

 

5. Pressure release device of welded ball valve

 

Automatic Internal Pressure Relief of the Valve Cavity and Pressure Relief of the Double Block Mid-cavity

Although ball valves have the up and down double valve seats partition seal, it is unavoidable that the valve seats may be damaged during the long-time operation. When the valves are in a close state, a certain internal leakage may occur on the upper valve seats, causing the media to leak out to enter the ball mid-cavities. The specially designed down valve seats can effectively avoid the overpressure of ball mid-cavities. Once the pressure of the valve chambers exceeds that of the down valve seats about 138Kpa, it will push away the down valve seats from the balls to release the pressure to the down pipelines. The ball valves are installed with pressure tubes that are connected to the mid-cavities and lead to the ground. Regardless of the valves are fully open or fully closed, we can open the valve cavities and shut off valves to release the mid-cavity pressure. The sealing performance of the valve seat can also be tested by releasing the mid-cavity pressure.

 

We are a welded ball valves supplier, please feel free to contact us if you need them!

The Function of A Check Valve

Check valve is also called clack valve, one-way valve, or non-valve valve because it only allows fluid to flow in one direction. These industrial valves are automatically activated by the force generated by the flow of the medium in the pipeline and can be classified as automatic valves. The check valve is used in the pipeline system, and its main function is to prevent the backflow of the medium, prevent the pump and its generator from reversing, and prevent the backflow of the medium from the container. This check valve can also be used to replace the auxiliary system at which the pressure can increase above the pressure of the main system. If the fluid flows back and the check valve is not installed, a water hammer may occur. Water hammer often occurs, with excessive force, and it is easy to damage the pipeline or components. Check valves can be used in a variety of applications ranging from pipelines to gas export facilities.

What Is a Check Valve?

Cast Iron check valve

Check valves are usually installed in the pipeline to prevent backflow. A check valve is basically a one-way valve in which the flow can flow freely in one direction, but if the flow turns, the valve will be closed to protect the piping, other valves, pumps, etc. If the flow is diverted without a check valve installed, a water hammer may occur. Water hammer often occurs with extreme force and can easily damage pipes or components.

Precautions when choosing a check valve

When selecting a check valve, it is important to conduct a cost-benefit analysis of the specific system. Usually, the focus is on reducing costs while obtaining the lowest possible pressure loss, but for check valves, higher safety equals higher pressure loss. Therefore, in order to ensure the check valve protection system, each system needs to be evaluated separately, and factors such as the risk of water hammer, acceptable pressure loss, and the financial consequences of installing a check valve must be considered. Click here to get more information about us.

Check valve

Where are the check valves used?

Check valves can be used in many different applications. For example, they are usually placed on the outlet side of the pump to protect the pump from backflow. The centrifugal pump is the most common type of water pump. It is not self-priming, so a check valve is essential to keep the water in the pipeline. In addition, check valves are often used in HVAC systems (heating, ventilation, and air conditioning systems). For example, HVAC systems are used in large buildings, where the coolant is pumped many storeys up. The check valve is installed here to make sure that the coolant will not be flushed back.

All check valves are suitable for various applications such as gas and liquid pipelines, water and steam systems, cooling towers, water treatment, gas export facilities, product tank farms, gas storage, and Mining dehydration.

We are check valve suppliers. Please feel free to contact us if you are interested in our check valves or other products.

How To Maintain Butterfly Valve

The butterfly valve is a mechanism that regulates the flow of materials in a large pipe diameter through a quarter-turn rotation of the disc.

A rod passes through the center of the disc, and this rod is connected to a drive that controls the movement of the disc. The position of the disc is parallel or perpendicular to the flow of the medium. The butterfly valve is different from other valves because the butterfly plate is always in the fluid, resulting in pressure changes at any position of the valve.

The butterfly valve regulates the flow by starting, decelerating, or stopping the medium. The disc opens and closes with a low torque of 90 degrees, which is suitable for any compatible application. Because of their low cost and lightweight, butterfly valves are generally more popular than other types of valves.

For some processes, extreme temperatures and corrosion are factors that can easily damage the valve seal. Butterfly valves can withstand extreme cold or extreme heat. This means that the integrity of the sealing device is critical for high-risk applications such as energy production and oil processing (because a leak may threaten public safety or the environment).

Butterfly valves need regular maintenance and repair after working in different working environments for a period of time. General maintenance can be divided into minor repairs, medium repairs, and heavy repairs.

The specific analysis depends on the environmental conditions of the pipeline. Because different industries require different maintenance and repair procedures, for example, in the pipeline maintenance of petrochemical enterprises, the pipeline pressure is required to be lower than PN16MPa, and the medium temperature is lower than 550°C. Different maintenance conditions are required for various physical and chemical pipeline transportation media.

Butterfly valve

The minor repair process of various pipeline butterfly valves, including cleaning nozzles and oil cups, replacing o-rings, cleaning threads and valve stems, removing debris in the valve, tightening screws, and configuring handwheels. All of these can be used as scheduled maintenance. Medium repair: including minor repair items, replacement of clean parts, valve body repair, sanding of seals, valve stem straightening, etc. These items can be used for an overhaul in the factory. Heavy repair: Included in the mid-repair project, replacement of valve stems, repair of brackets, replacement of springs and seals. When these are needed, the butterfly valve suffers huge damage.

In order to prevent rust and oiling, butterfly valves should be properly maintained.

At the top of the valve, there is a lubricating oil fitting. This may not be observed when the valve arrives. Make sure to apply grease to the neck of the valve at regular intervals until the excess grease flows out.

In the gearbox, you can use lithium-based grease for maintenance.

You can use any silicon-based product/lubricant to easily clean all parts of the valve.

If you do not use it frequently, please try rotating or cycling the butter valve once a month.

Lugged, wafer and double flanged butterfly valves of all materials and seat types are easy to use and long lasting as long as they are installed and maintained correctly.

Storage Conditions

ㆍTo protect the seat and seals, do not unpack the valves until they are ready for installation. By doing this you are protecting the valve from dust and debris which may eventually cause seat leakage.

ㆍKeep in a cool well ventilated space if storing for a longer period of time.

Valve Installation

ㆍValves can be installed in any orientation however it is best if it can be installed upright especially in bigger sizes to reduce load on the shaft caused by the actuator or gearbox trying to pull away.

ㆍIt is common for smaller butterfly valves to be mounted in various orientations eg water trucks. This is fine and is common practice.

ㆍVerify the material of the butterfly valve, seat and disc before installation. Ensure that there are no defects caused by storage or transportation.

ㆍVerify the pressure rating of the valve vs the application requirement.

ㆍWhen installing directly to a pump or another valve be sure to have a pipe spacer between them to allow for the butterfly disc to open.

ㆍComplete all welding works before valve installation and be sure the flange has cooled to ambient temperature before installing the butterfly valve.

ㆍMake sure there is no welding residue, waste, rust or other debris in the pipe before installation. Wash with water or a mild detergent if needed.

ㆍClean the surface of the flange that will come in contact with the butterfly valve to ensure it is free of rust and debris. Wash with water or a mild detergent if needed.

ㆍMake sure there is no warpage of the flange or misalignment of the butterfly valve in relation to the flange. This is the most common cause of butterfly valve problems where it is not aligned with the flange/pipe correctly and the disc catches when trying to open/close. Support the valve where necessary to reduce load from the piping assembly.

ㆍInstall spacing bolts taking care not to damage the valve seat and adjust the face to face of the two flanges so there is space when the piping is spread open (enough space to remove the valve or replace it for maintenance).

ㆍOnce the pipes are centred, insert the bolts so that the bottom of the valve can rest upon them to prevent the valve from falling through.

Before tightening the bolts operate the valve to ensure it does not catch on the pipework or the flange.

ㆍTighten the bolts one at a time doing it in stages so even pressure is applied and a seal is formed between the valve and flanges.

ㆍOnce the installation is complete operate the valve several times to ensure it is free from impingement and it has not moved during installation.

Solder butterfly valve

Field Testing

ㆍRubber seated butterfly valves are designed to hold rated pressures only. Test pressures above rated working pressure in the closed position can cause damage to the valve.

ㆍWith the disc in the open position the pipeline can be tested up to the valve hydrostatic test pressure.

ㆍSeat leakage can occur with foreign material between the seat and disc. If this occurs open the valve 10 to 15 degrees to obtain high velocity flushing action. Close and repeat if necessary.

ㆍSeat leakage can result from a rotational shift in position of the disc in relation to the body. Readjust the closing stop on the actuator/gearbox as necessary.

ㆍFor dry applications acutator stops can be adjusted to stop the disc burying all the way into the seat. This will still allow a bubble tight seal but prolong life span of the seat.

Operation

ㆍDo not use the valve at pressures above its working pressure.

ㆍIf the valve is jammed in a position between open and closed check the actuator operation. If necessary remove the actuator and manually operate the valve to fault find. Remove and check valve for foreign objects if required (see maintenance).

ㆍExcessive torque from the actuator can damage the internal valve parts.

Maintenance

ㆍCycle the valve once a month or more if it is not used regularly.

ㆍRelieve the system pressure before maintaining the valve.

ㆍTo remove from pipework reverse the installation sequence.

ㆍReplace valve seat (liner) by removing the stem and disc. Press out liner and replace with new part. Reinstall the disc and stem along with seals and clips. Refit into line as in installation sequence.

ㆍIf the valve is operating in a dry application (eg compressed air) ensure to lubricate the disc and seat regularly to prolong life span

ㆍFor operational instructions please see each video link under products.

ㆍDesign Guidance & Product Advantages

ㆍWhen sizing the valve always consider available space for the actuator and feedback devices.

ㆍConsider valve supports to carry excess loads.

ㆍExtension shafts in SS316 are available upon request. This allows valve to be buried in pits and actuators to be above ground.

We are butterfly valve suppliers. Please feel free to contact us if you are interested in our butterfly valve or other products.

Differences Between Cast Iron And Cast Steel Valves

One of the most prominent ways to make enduring and also quality parts is with spreadings. Casting enables a high degree of information, which leads to not requiring as well as additional fabrication or setting up. While several products can be cast, steel and iron are both most popular as a result of their outstanding mechanical properties for a variety of applications.

Cast iron normally describes grey iron, pliable iron, and also malleable iron. Which is an iron casting with carbon web content of more than 2%.
Cast steel usually describes normal carbon steel and alloy steel. Which is steel spreading with carbon web content less than 2%.
For that reason, no big difference between the chemical content and also raw materials for cast iron vs cast steel.

Deterioration Resistance

When it involves corrosion, iron has better deterioration resistance than steel. That doesn't suggest that either is unsusceptible deterioration though. When left unprotected, both metals will oxidize in the existence of wetness. Eventually, they will completely decay. To prevent this, the coating is suggested for both steels as well as iron spreadings.

Expense

Cast iron is frequently less expensive than cast steel because of the reduced product costs, energy, and labor needed to create an end product. While raw steel is extra costly, there are, nonetheless, prefabricated kinds of steel. Those consist of sheets, poles, bars, tubes, and beams of lights.

Castability

Cast iron is fairly simple to cast, as it puts conveniently and does not diminish as much as steel. This flowability makes cast iron a suitable metal for architectural or ornate ironwork frameworks such as fencing and road furniture.

The advantage and disadvantage of cast iron

The grey cast iron's good casting residential properties are excellent vibration damping, good wear resistance, excellent machinability, and reduced notch level of sensitivity. However, its tensile toughness as well as prolongation are very low. So, it can just create some steel parts with reduced physical requirements. Needs such as safety cover, cover, oil pan, handwheels, framework, floor, hammer, small manage, base, frame, box, knife, bed, birthing seat, table, wheels, cover, pump, valve, pipeline, flywheel, electric motor blocks, etc. When it comes to greater qualities, grey actors iron can withstand better load and also a particular degree of rigidity or deterioration resistance. This permits a few of the more important spreadings such as a cylindrical tube, equipment, base, flywheels, bed, cylinder block, cylinder lining, piston, transmission, brake wheel, combining plate, medium pressure valve, and so on.

The ductile iron and malleable iron have high stamina, ductility as well as heat-resistance, and also strength. So a bigger application, sometimes, can replace carbon steel. However, its production innovation is high. The production process is a lot more complex. This makes the production expense higher than regular grey cast iron and also cast steel. Therefore, there are a lot more casting issues for pliable iron. There are numerous areas that make use of ductile iron, such as stress pipelines and also installations, automobile applications, farming, road and also building applications, and also general engineering applications.

The advantage and the disadvantage of cast steel

The major benefit of cast steel is layout versatility. The developer of the casting has the best liberty of layout choices. This permits intricate shapes as well as hollow cross-section components.
Cast steel has metallurgy manufacturing flexibility and also the toughest variability. One can choose various chemical structure and control that is adapted to the numerous needs of different projects. This provides various heat treatment choices in the larger context of the mechanical properties and also performance. Also using great weld-ability and also workability.
Cast steel is a type of isotropic material and also can be made into the general architectural strength steel spreadings. This improves the dependability of the task. Coupled with the layout and weight, the advantages of short delivery time, price, and also economic situation offers cast steel a competitive advantage.

The weight variety of steel castings is larger. Little weight can be only a few lots of grams of liquified mold accuracy spreadings. The weight of large steel castings rises to several tons, lots of lots, or numerous loads.
Steel castings can be used for a range of functioning problems. Its mechanical residential or commercial properties are superior to any other spreading alloys, and a variety of high-alloy steel for unique objectives. To endure high tensile tension or the vibrant load of parts, it is important to take into consideration pressure vessel castings. In low or high temperature, huge as well as fundamental part tons essential components ought to offer priority to steel castings.
However, cast steel has fairly negative shake-suction, use resistance, and mobility. The casting efficiency, contrasted to cast iron, misbehaves. Also, the costs are more than normal actors iron.
As a result, cast iron vs cast steel, have their very own benefits and downsides. Either should be chosen according to the application and also their physical residential or commercial properties.

The Working Principle And Features of Cast Iron Gate Valve

Cast iron gate valves are very common in our lives. But I bet you don't know much about them. This article will help you to understand their characteristics and how they work.

Cast Iron Gate Valve

The Features Of Cast Iron Gate Valve

1. Precision molded valve body. The valve body is precision molded, which, due to its precise geometry, does not require any fine machining inside the valve body, ensuring tightness.

2. Small opening and closing torque save opening and closing costs. When opening and closing the valve, the direction of movement of the spool is perpendicular to the direction of water flow, thus facilitating the opening and closing of the valve.

3. Integral rubber encapsulation. The valve's inner and outer rubber are all made of high-quality rubber. First-class European rubber vulcanization technology ensures that the vulcanized valve has precise geometry, a strong connection between the rubber and the plastic iron valve, and an elastic memory that prevents mold and mildew.

4. Low fluid resistance. The internal flow path of the butterfly valve body is straight, so the fluid does not change direction as it passes through the butterfly valve, resulting in low fluid resistance.

5. Flat bottom valve seat. In traditional valves, after flushing the pipe with water, foreign objects such as stones, wood, cement, iron pieces, and debris often accumulate in the grooves at the bottom of the valve and can cause leaks.

The resilient seat valve has the same flat bottom design as the plumbing machinery, which prevents contamination by debris and impedes the flow of liquid.

6. Lightweight. The valve body is made of high-quality ductile iron and is approximately 20-30% lighter than conventional valves. It is easy to install and maintain.

DIN Cast Iron Rising-Stem Gate Valve

 

The Working Principle Of Cast Iron Gate Valve

Cast iron gates are water retaining elements that directly bear water pressure. The gate frame is the supporting member around the gate plate and is also the chute for the up and down movement of the gate plate. The outer part of the chute is set in the second phase concrete of the gate pier and bottom of the gate, which transfers the water pressure borne by the gate plate evenly to the gate pier and bottom of the gate chamber.

The water-bearing surface around the gate frame and the water-backing surface around the gate frame are smooth and straight after mechanical processing, so that the combined surface, the water stop surface, and the movement chute are combined into one.

When the gate is opened and closed under the action of the opening and closing machine, the tightening ramp and frame chute ensure the longitudinal and transverse running trajectory of the gate. Under the dual action of water pressure and the tight closing tilt iron, the gate plate is ensured to run smoothly. The gate plate and frame chute are tightly fitted so that water is effectively stopped.

We are a Cast Iron Gate Valves manufacturer, please feel free to contact us if you need them.