H44H Cast Steel Swing Check Valve Steam High Temperature One way
Flange Check Valve
What is a Check Valve?
Swing check valve is also called one-way valve or check valve, its
function is to prevent the medium in the pipeline from flowing
back. The valve that opens or closes on its own by the flow and
force of the medium 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. This type of valve should
generally be installed horizontally in the pipeline.
Quick Details
| Product Name | CHECK VALVE |
| Material | stainless steel |
| Color | nickel white |
| Standard | DIN GB JIS ANSI |
| Class | 150LB(16)~600LB(2500) |
| Body and Ball Material | CF8 CF3 CF8M CF3M WCB PVC UPVC PP |
| Thread | -29~150(PTFE), -29~200( PTFE+GLASS), -29~300(J2 PPL) |
| Steam Seat and Gasket | PTFE |
Stainless Steel Check Valve Standards
Face to face dimensions as ANSI B16.10
End flange dimension as ANSI B16.5
Pressure-temperature ratings as ANSI B16.34
Pressure test as API 598
Applicable Medium: water ,gas,oil,and other causticity medium.
Stainless Steel Check Valve Application:
Valve is used for preventing the back-going of medium in pipelines
and equipments, and the pressure of medium will bring the result of opening and closing automatically.
When the medium is back-going, valve disc will automaticaly closed to
avoid accidents.
Stainless Steel Check Valve Test Pressure
| Test Item | Shell Test | Seal Test | Back Seal Test | Air Seal Test |
| Medium | Water | Air |
| Unit | MPa | lbf/in2 | MPa | lbf/in2 | MPa | lbf/in2 | MPa | lbf/in2 |
| Pressure (Class) | 150 | 3.1 | 450 | 2.2 | 315 | 2.2 | 315 | 0.5-0.7 | 60-100 |
| 300 | 7.8 | 1125 | 5.6 | 815 | 5.6 | 815 |
| 400 | 10.3 | 1500 | 7.6 | 1100 | 7.6 | 1100 |
| 600 | 15.3 | 2225 | 11.2 | 1630 | 11.2 | 1630 |
| 900 | 23.1 | 3350 | 16.8 | 2440 | 16.8 | 2440 |
| 1500 | 38.4 | 5575 | 28.1 | 4080 | 28.1 | 4080 |
Types of Valves
The type of disk will decide the type of valve. Most common types
of Check valves are
Swing Type.
Lift Type
Dual Plate Type
Stop Check Valve
Swing Check Valve
The disc in a swing type valve is unguided as it fully opens or
closes. This Valve operates when there is flow in the line and get
fully closed when there is no flow. Turbulence and pressure drop in
the valve is very low.
Disk and seat designs can be of metal to metal or metal to
composite.
The angle between the seat and the vertical plane is known as the
seating angle and varies from 0 to 45 degrees.
Usually, the seat angles are in the range of 5 to 7 degrees. Larger
seat angles reduce the disc travel, resulting in quick closing,
thus minimizing the possibility of water hammer. A vertical seat
has a 0-degree angle.
The swing type valve allows full, unobstructed flow and
automatically closes as pressure decreases. Usually installed in
combination with gate valves because they provide relatively free
flow combinations.
A basic swing type valve consists of a valve body, a bonnet, and a
disk that is connected to a hinge.
Parts of Non-Return Valve
It is consists of body, cover, disk, hinge pin, and seat ring. In
the image below you can see the parts of the valve.
Packing Details:
We choose suitable wood cases according to different valves and
arrange skilled workers to pack in case of bruise. Long term
cooperated forwarder will book space, clear customs and transport
for us without delay. There are three ways for transportation, by
sea, by air and by train. We will arrange transportation according
to customers' needs.
Delivery Details: According to the order, 7~60days
