Main connection Dimension Gate valve   RF

Specifications:1) Design and manufacture: API600/API6D2) Flanges: ANSI B16.5 3) Material: carbon steel (WCB/WCC/LCB/LCC)stainless steel (CF8/CF8M, CF3/CF3M)4) Size: 2"- 24" 5) Pressure Rating: 150 - 900lbs

6)Painting: High temperature painting

Gasket of Cover Flange:Carbon steel or stainless+flexible graphite combined gasket is used for Class 150 gate valve,Stainless steel+flexible graphite wounded gasket is used for Class 300 gate valve,Stainless steel+flxible graphite wounded gasket is used for Class 600 gate valve,and ring joint gasket is also optional for Class 600 gate valve,Ring Joint gasket is used for Class 900 gate valve,Pressurized seal design is used for Class 1500-Class 2500 gate valve.

Packing Seal:Molded flexible graphite is used for packing material.PTFE or combined packing material can be also used if being requested by the customer. The internal surface of the stuffing box,of which area is contacted with the packing,is of excellent finish(Ra 3.2mm).The stem surface,contacting with the packing,should be rolled and pressed after being precisely machined,so as to reach to the high finish and compactness(Ra 0.8mm)and ensure the reliable tightness of the stem area.

Seat   For carbon steel gate valve,the seat is usually forged steel.The sealing surface of the seat is spray welded with hard alloy specified by the welded on seat is used for NPS<10 gate valves.For Stainless steel gate valve,integral seat is usually adopted,or to welded hard alloy directly integrally.Threaded or welded on seat is also optional for stainless gate valve if being requested by the customer.

Special Gate valve    Besides the commom gate valves,our company's also makes cryogenic gate valve,Jacketed Gate Valve,Bellow Sealed Gate valve, Extension Stem Gate Valve for underground application,etc.

Parts and Material List

  Main connection Dimension

Wedge Gate Valve (RF)