Check valves serve an important application—namely to prevent flow
in one direction while allowing it in the other. A check valve is
self-actuated and designed to prevent fluid from flowing back into
the system (prevent reverse flow). Real-life applications include
preventing backflow into an injection line or into a pump. The
fluid flow opens the valve by forcing a disk or ball in one
direction. When the flow stops, the disk or ball is seated and
closes the valve. They can be installed in horizontal or vertical
upward flow piping.
- Valves in accordance with API-602.
- Socket Weld, Threaded, Combined or Flanged RF or RTJ ends.
- Bolted Bonnet or Welded Bonnet options.
- Renewable or integral seats.
- Low fugitive emissions control.
- NACE Service either MR-0175 or MR-0103.
- Test in accordance with API-598
Cold storage, chemical industry, petrochemical industry, machinery,
urban construction, fire fighting, water treatment, metallurgy,
electric power etc
To avoid any mistake and make a suit solution for your enquiry ,
please kindly specify the following informaiton:
Design & Manufacture Std.: API594, ANSIB16.34,API602,
Face to Face Std.:ASMEB16.10, API 602, JISB2002, DIN3202, EN558,
Test Standard: API598, API 602 JISB2003 ,BS 6755
Body Material :A105,F5,F11,F22,,304,304L,316,316L
Valve check and valve :API 598
Connection: RF/RTJ Flange, Butt Welded
1)Socket Weld End ANSI B16.11
2)Screwwd End ANSI B1.20.1
3)Flarge End ANSI B16.5
1) service standards in quality, efficiency and reliability
2) extensive know-how of piping business and technologies
3) best source for selected european piping products
4) competitive prices and fast response time
5) extensive reference list in piping supplies
Test & Inspection requirement , Such as : Hydraulic test ,
Material Analysis , Chemical compoent analysis ,etc
WCB, low temperature steel, dual phase steel(F51F5), Titanium
alloy, Aluminum bronze, INCONEL, SS304, 304L, 316, 316L,
chrome-molybdenum steel, Monel (400/500), 20#alloy, Hayne’s alloy
etc. design standard:API594,API6D,BS1868 Face to face:
API594,API6D,ASME 16.10 . Grade of pressure-temperature: ASNI 16.34
Test &inspection: API6D,API598 Flange: ASME 16.5, API605, ASME
API 602/ BS 5352
The length of the structure:
Length of structure of socket welding / thread end of forged steel
gate valve is manufactured by factory standard=ASME B16.10
The length of structure of flange/ butt welding end of forged steel
gate valve is manufactured by ASME B16.10
Flange connecting end:
Butt welding connecting end:
API 602/ASME B16.34
Inspection and test:
Pressure and temperature rating:
NPS ½″~NPS 2″ (DN15~DN50) CL150~CL2500
Main body material:
A105, LF2, F11, F22, F51, F91, F304, F316, F304L,F316L etc.