Proudct Features
1.Unique stem hole design in the disc ensures a dry stem journal
2.360 degree polished disc assures positive on-off
3.Long service life, standing the test of tens thousands opening/closing operations
4.Bubbles-tight sealing with no leakage under the pressure test
5.Wide selection of materials , applicable to various medium
Operation type
Lever,Gear, Electric actuator,Pneumatic actuator,Bare stem
Standard
Design and Manufacture:API 09
Inspection and Test:API 598
End flange dimension:ASME B16.5,ASME B16.47(API 605 ,MSS SP44)
Butt weld end dimension:ASME B16.25(BW)
Face to face:API 609
Pressure-temperature ratings:ASME B16.34
NACE: NACE 0175
Material
ASTM A216 WCB WCC;ASTM A217 WC1 WC6 WC9;ASTM A351 CF8,A351 CF8M,
A351 CF3,A351 CF3M,A351 CN7M;.ASTM A352 LC1 LCB LCC LC3(Cast Steel,
Alloy Steel, Stainless Steel, Special Steel)
Features
1.Tow or Three pieces body
2.Fire-safe, antistatic and blow-out proof stem functions
3.Up stream sealing,down stream sealing,double sealing
4.Self relieving seat
5.Double block and bleed(DBB)function
6.Emergency sealant injection system
7.Stem/bonnet extension for cryogenic service
Operation type
Handwheel,Gear, Electric actuator,Pneumatic actuator,Bare stem
Standard
Design and Manufacture:API 6D,API608,BS5351 or ASME B16.34
Inspection and Test:API 598/API 6D
End flange dimension:ASME B16.5,ASME B16.47(API 605 ,MSS SP44)
Butt weld end dimension:ASME B16.25(BW)
Face to face,end to end:ASME B16.10/API 6D
Pressure-temperature ratings:ASME B16.34
NACE: NACE 0175
Material
ASTM A216 WCB WCC;ASTM A217 WC1 WC6 WC9;ASTM A351 CF8,A351 CF8M,
A351 CF3,A351 CF3M,A351 CN7M;.ASTM A352 LC1 LCB LCC LC3(Cast Steel,
Alloy Steel, Stainless Steel, Special Steel)
This reducing valve the new type pilot extra-huge membrane pressure reducing valve developed by our company. It is greatly improved on basis of normal pressure reducing valve. The membrane use new material, enlarging the working area, so the slight change of upper pressure or lower pressure can be fed back to membrane of main valve, and adjust the opening of main valve to ensure the constant pressure of lower stream pressure.
