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Gas Flat Gate Valve,WCB,CF8,CF3,CF8M,CF3M,LCB,LCC,LC1,PSB,BW, Pressure sealing, Butt welded

Gas Flat Gate Valve,WCB,CF8,CF3,CF8M,CF3M,LCB,LCC,LC1,PSB,BW, Pressure sealing, Butt welded Featured Image
  • Gas Flat Gate Valve,WCB,CF8,CF3,CF8M,CF3M,LCB,LCC,LC1,PSB,BW, Pressure sealing, Butt welded

Short Description:

Design manufacture standard: API 6D
Length of structure: API 6D
Flange connecting end: ASME B16.5/ASME B16.47
Butt welding connecting end: ASME B16.25
Wall thickness: ASME B16.34
Inspection and test: API 6D
Pressure and temperature rating: ASME B16.34
Product scope: NPS 2inch-NPS 48inch,CL150-CL2500
Main body material:WCB,LCB,WCC,WC6,WC9,CF8,CF8M,CF3,CF3M,A890 4A etc.
Drive device: handle, bevel gear, electric, pneumatic, etc.


Product Detail

Product Tags

Technical parameters and characteristics

Product Flat Gate Valve
Nominal diameter 2″ - 48″ DN50 - DN1200
Design temp.  -196℃ - 593℃
Design pressure class 150 - 1500  PN16 - PN250
Material A216 WCB, WCC; A217 WC6, WC9, C5, C12A; A352 LCB, LCC;
A351 CF8, CF8M, CF3M, CF8C, CN3MN, CK3MCUN, CN7M;
A890 4A(CD3MN), 5A(CE3MN), 6A(CD3MWCuN);
ASTM B 148 C95800, C95500
Design standard API 6D
Face to Face ASME B16.10 EN558 series
Connection end RF, RTJ, BW EN1092 series
Test standard API 598, ISO 5208 EN12266-1
Operation Hand wheel, bevel gear, electric-AUMA, Rotork, pneumatic
Application Power station, petroleum, tap water engineering, chemical engineering
Feature 1 Single Disc
Feature 2 Double Disc
Feature 3 SOFT seal: fire safe, double sleeve sealed, double block & bleed, self cavity relief, emergency sealant injection, diversion hole design.
Feature 4 Metal seal: double sleeve sealed, hard seat seal, double block & bleed, self cavity relief, diversion hole design.

Main Feature

1) The seat ring uses the floating seat ring structure with O-seal ring sealed and pre-tightening force applied to have inlet and outlet dual-way sealed, and the open-close moment with this structure is 1/2 that of the common valves only, able to lightly open and close valve.
2) When fully opened, the valve’s channel is smooth and linear,with an extremely small flow resisting coefficient and no pressure loss ,and the pipeline can be cleaned with hair-ball through it .
3) Automatic removal of the high pressure in the internal cavity when the valve is about to close so as to ensure safety.
4) Fully sealed structure leaves a good protective property, suitable for the requirement of 24-hour duty.

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