What Do You Know About The Types Of Check Valves?

Check valve such as DIN Lift Check Valve is one of the commonly used valves, referring to the flow of the medium itself to automatically open, closed disc, used to prevent the medium flow back. As a China Industrial Valves Brand, We want to say Divided into several types, different check valves have different functions. Get to know today.

(1) lift check valve. The disc of swing check valve is like a disc, rotating around the axis of seat passage, because the valve inner passage into a flow line, flow resistance than the lifting check valve small, suitable for low flow rate and flow do not change the large aperture occasions, but should not be used for pulsating flow, its sealing performance is not as good as the lifting. There are three types of swing check valves: single valve type, double valve type and half valve type. These three types are mainly divided according to the valve diameter. The purpose of these three types is to prevent the medium from stopping the flow or reversing the flow to weaken the hydraulic impact.

(2) compression check valve. This valve is used for boiler water supply and steam cut-off. It has the integrated function of lifting check valve and globe valve or Angle valve.

(3) pipeline check valve. A valve that slides along the center line of the body. Pipeline check valve is a new valve, small size, light weight, processing technology is good, is one of the development direction of check valve. But the fluid resistance coefficient is slightly larger than the swing check valve.

In addition to these three, there are other types of check valves, if you want to know more welcome to contact us!We are Gost Globe Valve Supplier. Providing you with high quality services and products

The Difference Between Globe and Gate Valves

As a Gost Gate Valve Suppliers, we want to ask what's the difference between a globe valve and a gate valve, you know?

1. The structure

Installation space is limited when the selection should be noted. Gate valves can be tightly closed with a sealing surface depending on the pressure of the medium to achieve a non-leakage effect. When opening and closing, the spool and seat sealing surface are always in contact and friction with each other, so the sealing surface is easy to wear. When the gate valve is close to closing, the pressure difference between the front and back of the pipeline is large, which makes the sealing surface wear more serious.

Gate valve structure will be more complex than globe valve, from the appearance, in the same aperture, gate valve higher than the stop valve, the stop valve longer than gate valve. In addition, the gate valve has the bright rod and the dark rod. No globe valve.

2. Working principle

When the globe valve is opened and closed, it is an ascending valve stem type, that is to say, rotating handwheel, handwheel will follow the stem to do rotation and lifting movements. And gate valve is to rotate the hand wheel, so that the valve stem to do lifting movement, the hand wheel itself position remains unchanged. Flow varies, gate valves are required to be fully open or closed, and globe valves are not required. The globe valve has the direction of entrance and exit. Gate valve has no inlet/outlet direction requirement.

In addition, gate valves are only fully open or fully closed. Gate opening and closing travel is large and takes a long time. The valve plate movement stroke of the globe valve is much smaller, and the valve plate of the globe valve can stop at a certain place in the movement, do flow regulation to use. Gate valves can only be used for truncation and have no other functions.

3. Performance differences

Globe valve which are provided by Gost Globe Valve Supplier can be cut off to use, can be used for flow regulation. The flow resistance of the globe valve is relatively high, which makes it more laborious to open and close the valve. However, due to the short distance between the valve plate and the sealing cover, the opening and closing stroke is short.

Gate valve can only be fully open and fully closed. When it is fully open, medium flow resistance in valve body channel is almost 0. Therefore, gate valve's opening and closing is very labor-saving.

Besides these, they are also different in other aspects. If you want to know more details, you can contact us!

We are China Top Industrial Valves Brand. If you have demand about our products, please contact us.

Globe Valves are Classified By Use. What Are They?

Globe Valves which maybe be provided by Wholesale Angle Type Globe Valve are Classified By Use.Do you know that it can be divided into the following types?

1. Fluorine stop valve

Fluorine-butterfly valves is also called the fluorine plastic lining corrosion valve, is to ptfe resin (or profiles processed) mold (or set) method is used in steel or iron valve pressure piece of lining (the same method is applicable to all kinds of pressure vessel and pipeline fittings lining) or the outer surface of the valve internal parts, using its unique performance in resisting strong corrosion medium made into all kinds of valves and pressure containers.

Fluorine-butterfly cut-off valve fluorine-butterfly cut-off valve used in - 50 ~ 150 ℃ aqua regia, various concentration of sulfuric acid, hydrochloric acid, hydrofluoric acid and various organic acid, strong acid, strong oxidizer, also applies to all kinds of organic solvent concentration of alkali and other corrosive gas, liquid medium used on the pipeline.

2. National standard globe valve

The international standard globe valve is the most commonly used product in the globe valve series, API standard American standard globe valve implement ANSI and API standard, the sealing surface of the disc and seat adopt different hardness of the company too, cobalt base hard alloy surfacing, seal is reliable, hardness is high, wear-resisting, high temperature resistant, corrosion resistant, abrasion resistant performance is good, life is long.

3. Needle valve

Needle valve is a kind of small-diameter instrument valve, which is used for opening and closing and accurate flow control in the instrument measuring pipeline system.

We Wholesale DIN Angle Globe Valve, Welcome to our website know more details.

What Are The Types of Globe Valves?

What are the categories of globe valves such as DIN Angle Type Globe Valve by channel direction?

[1]Angle globe valve

Medium on the import and export channel is not in the same direction, in 90 ° Angle, will produce a certain pressure drop, the biggest advantage is that can be installed in the corner of pipeline system, the elbow, saving and convenient operation.

[2] straight through stop valve

Medium on the import and export channels in the same direction, in 180 °, the flow state of less damage, loss of pressure across the valve is relatively small.

[3] straight flow stop valve

The stem and channel are at an Angle, the seat sealing face and the inlet and outlet channels are at an Angle, and the flow direction is almost unchanged. Suitable for piping with coking and solid particles.

We Wholesale DIN Globe Valve. If you have demand, Please contact us! We will provide you high quility Gost Globe Valve. Looking forward to your contact!