CHECK VALVES

As one ofvertical check valve manufacturers, MstnLand provides high performance check valves exporter, including Swing check valve, Lifting check valve, Titling check valve, External check valve, Wafer check valve etc.

The disc of industrial valveopen or close by medium flow is called check valve which is a kind of automatic valve for one-way flow of the pipeline, that is only allowed medium flows in one direction of the pipeline system. The check valve is used to prevent the backflow of medium, the pump and drive motor reversal and the discharge of the container medium. Check valves should be installed in the pump outlet or front of the control valve for maintaining convenience.

Different Types Of Check Valve For Sale

Check Valves Types

The valve that opens or closes by the force of the medium flow to prevent the medium from flowing back is called a check valve. Check valves belong to the category of automatic valves, which are mainly used in pipelines where the medium flows in one direction, and only allow the medium to flow in one direction to prevent accidents. According to the structure, it can be divided into lift check valve, swing check valve and butterfly check valve; according to the material, it can be divided into cast iron check valve, brass check valve, stainless steel check valve, forged steel check valve, cast steel check valve.

Check Valve Working Principle

The function of the check valve is to allow the medium to flow in one direction and prevent the flow in the opposite direction. Usually, this kind of valve works automatically. Under the effect of the fluid pressure flowing in one direction, the valve flap opens; when the fluid flows in the opposite direction, the fluid pressure and the self-coincidence of the valve flap act on the valve seat, thereby cutting off the flow. It includes a swing check valve and lift check valve. The swing check valve has a hinge mechanism and a valve disc like a door that rests freely on the inclined valve seat surface. In order to ensure that the valve clack can reach the proper position of the valve seat surface every time, the valve clack is designed in a hinge mechanism so that the valve clack has enough space for rotation and makes the valve clack truly and comprehensively contact the valve seat. The valve clack can be made of metal, or it can be inlaid with leather, rubber, or synthetic covering, depending on the performance requirements. When the swing check valve is fully opened, the fluid pressure is almost unimpeded, so the pressure drop through the valve is relatively small. The valve disc of the lift check valve is located on the sealing surface of the valve seat on the valve body. According to the conditions of use, the valve disc can be an all-metal structure, or it can be in the form of a rubber pad or a rubber ring inlaid on the valve disc frame. Like a globe valve, the passage of fluid through the lift check valve is also narrow, so the pressure drop through the lift check valve is larger than that of the swing check valve, and there is little restriction in the flow rate of the swing check valve.

Check Valve Installation

Precautions：

1）Do not allow the check valve to bear weight in the piping system. Large check valves should be independently supported so that they are not affected by the pressure generated by the piping system.

2）When installing, ensure that the direction of the medium flow should be consistent with the direction of the arrow marked on the valve body.

3）The lift-type vertical flap check valve should be installed on the vertical pipeline.

4）The lift-type horizontal flap check valve should be installed on the horizontal pipeline.

Other supplier products

	CAST IRON GATE VALVES	CAST IRON GATE VALVES MstnLand, as one of professional cast iron gate valves suppliers, provides high performance gate valve products, mainly incl...
	BUTTERFLY VALVES	MstnLand provides high performance butterfly valve products, including Hard seal and soft seal butterfly valve, triple offset/double offset/centric...
	WAFER TYPE CONCENTRIC BUTTERFLY VALVE	MstnLand's series of wafer type sewage concentric butterfly valves are widely used in water supply and drainage, building fire protection and other...
	BRASS BALL VALVES	Brass ball valves refer to ball valves made of brass material, namely the valve body is brass. Brass is the alloy that is made up of copper and zin...
	BALL VALVES	As a ball valves company, MstnLand provides high performance ball valves china, including Trunnion mounted ball valve, Floating ball valve, Welded ...

All supplier products

Same products

	China Gate valve	Seller: Yuanda Valve Group Co.,Ltd.	China Gate valve China Gate valve A is a type of valve that uses a gate or wedge-shaped dis...
	Gate Valve Vs. Ball Valve	Seller: Yuanda Valve Group Co.,Ltd.	Gate Valve Vs. Ball Valve Gate valves and ball valves are both types of valves that are used...
	Non Return Valve Suppliers China	Seller: Yuanda Valve Group Co.,Ltd.	Non Return Valve Suppliers China refers to the opening and closing member for the circular v...
	Common Types Of Check Valves	Seller: Yuanda Valve Group Co.,Ltd.	Common Types Of Check Valves A is a valve whose switching parts are disc-shaped and rely on ...
	Brass ball valve	Seller: Yuanda Valve Group Co.,Ltd.	Brass ball valve Brass ball valve Applications: Water Supply: Commonly used in residentia...