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Pressure Seal Check Valve

Pressure Seal check valves are designed for reliability in high velocity service applications to prevent backflow. The check valves are designed to operate in either vertical or horizontal pipe runs. Seating surfaces are hardfaced with Stellite 6 to provide high cycle capability. The swing check design offers better flow characteristics than a tilting disc design with higher flow area. The tilting disc is a non-slam design which minimizes the potential for water hammer. Pressure Seal tilting check valves feature a fitted disc that’s guided to ensure an effective tight seal and to minimize vibration.
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Pressure sealing cover, swing type disc
Threaded or welded seat ring
ASTM A216 WCB, A217 WC6, A351 CF8, A351 CF8M, A351 CF3, A351 CF3M, A351 CN7M
 
Standards compliance
Design and Manufacture: ANSI B16.34, API 6D, BS1868
Face to face(end to end): ANSI B16.10, API 6D
Flanged connection: 2"~24" according to ANSI B16.5
Butt welded end: ANSI B16.25
Test and inspection: API 598, API 6D
 
A. Back up ring: Absorbs thrust applied by internal pressure.
B. Thrust ring: Protects the soft metallic gasket from deformation.
C. Gasket Unique angular design provides superior sealing.
Materials List
NO.
Part Name
Material
16
Split Pin
Stainless steel
15
Washer
Stainless steel
14
Disc Pin
CS/SS
13
Hinge Pin
CS/SS
12
Seat Ring
CS+SS/SS/SS+STL(see body materials)
11
Disc
CS+SS/SS/SS+STL(see body materials)
 
NO.
Part Name
WCB
LCB
WC6
WC9
10
Yoke Stud&Nut
A193 Gr B7/A194 Gr 2H
A320 Gr L7/A194 Gr 4
A193 Gr B16/A194 Gr 4/7
A193 Gr B16/A194 Gr 4/7
09
Cover Stud&Nut
A193 Gr B7/A194 Gr 2H
A320 Gr L7/A194 Gr 4
A193 Gr B16/A194 Gr 4/7
A193 Gr B16/A194 Gr 4/7
08
Gasket
Soft iron
Soft iron
SS304
SS304
07
Thrust Ring
A182 F6a
A182 F304
A182 F11
A182 F22
06
Back Up Ring
A182 F6a
A182 F304
A182 F11
A182 F22
05
Yoke
A216 Gr WCB
A352 Gr LCB
A217 Gr WC6
A217 Gr WC9
04
Hinge
A216 Gr WCB
A352 Gr LCB
A217 Gr WC6
A217 Gr WC9
03
Cover
A216 Gr WCB
A352 Gr LCB
A217 Gr WC6
A217 Gr WC9
02
Bonnet
A216 Gr WCB
A352 Gr LCB
A217 Gr WC6
A217 Gr WC9
01
Body
A216 Gr WCB
A352 Gr LCB
A217 Gr WC6
A217 Gr WC9
 
NO.
Part Name
C5
LCB
WC6
WC9
10
Yoke Stud&Nut
A193 Gr B16/A194 Gr 4/7
A193 Gr B16/A194 Gr 4/7
A193 Gr B7/A194 Gr 2H
A193 Gr B7/A194 Gr 2H
09
Cover Stud&Nut
A193 Gr B16/A194 Gr 4/7
A193 Gr B16/A194 Gr 4/7
A193 Gr B7/A194 Gr 2H
A193 Gr B7/A194 Gr 2H
08
Gasket
SS304
SS304
SS304
SS316
07
Thurst Ring
A182 F5
A182 F22
A182 F304
A182 F316
06
Back Up Ring
A182 F5
A182 F22
A182 F304
A182 F316
05
Yoke
A217 Gr C5
A217 Gr C15
A351 Gr CF8
A351 Gr CF8M
04
Hinge
A217 Gr C5
A217 Gr C15
A351 Gr CF8
A351 Gr CF8M
03
Cover
A217 Gr C5
A217 Gr C15
A351 Gr CF8
A351 Gr CF8M
02
Bonnet
A217 Gr C5
A217 Gr C15
A351 Gr CF8
A351 Gr CF8M
01
Body
A216 Gr WCB
A217 Gr C15
A351 Gr CF8
A351 Gr CF8M

Products List

Ball Valve
◆ Cast Steel Floating Ball Valve
◆ Forged Steel Floating Ball Valve
◆ Cast Steel Trunnion Ball Valve
◆ Forged Steel Trunnion Ball Valve
◆ Welded Structure Ball Valve
◆ Top Entry Ball Valve

Butterfly Valve
◆ Concentric Type Butterfly Valve
◆ Double Eccentric Butterfly Valve
◆ Triple Offset Butterfly Valve
◆ High Performance Butterfly Valve
◆ AWWA C504 Butterfly Valve
◆ Electric Butterfly Valve 
◆ Pneumatic Butterfly Valve
◆ High Pressure Butterfly Valve  

Gate Valve
◆ Cast Steel Gate Valve
◆ Pressure Seal Gate Valve
◆ Throught Conduit Gate Valve
◆ Forged Steel Gate Valve

Globe Valve
◆ Cast Steel Globe Valve
◆ Pressure Seal Globe Valve
◆ Forged Steel Globe Valve

Check Valve
◆ Cast Steel Swing Check Valve
◆ Pressure Seal Check Valve
◆ Dual Plate Wafer Check Valve
◆ Forged Steel Check Valve

Plug Valve
◆ Sleeve Soft Sealing Plug Valve
◆ Inverted Pressure Balance Lubricated Plug Valve

◆ Steel Strainer

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China Butterfly Valve Manufacturer - www.chinavalve.info
Address: Sanqiao Industrial Zone, Oubei Town, Yongjia County, Zhejiang Province, China. Zip Code: 325102
Tel: +86-577-67279881 Fax: +86-577-67279880 Email: welcovalve@gmail.com
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