Valve
Check Valves Prevent Backflow with Rapid Response and Stability
Check Valve
Our Check Valves, designed with Non-slam and Pressure Seal technologies, ensure quick valve closure and minimal pressure loss, effectively eliminating backflow and system shocks.
Ideal for protecting systems where rapid response and stability are crucial under varying flow conditions.
Check Valve
Production Range
Standard & Specification
API 594 & 6D, GB/T 12236
Testing: API 598, GB/T 13927 & 26480, JB/T 9092
End Connection
Flange, Wafer, Lug, Butt Welded
Operating Mode
Automatic
Materials
CS, SS, AS, Special Materials, Chrome-molybdenum Steel
Forged Steel Check Valve
| Main Materials
Body
A105N CS
Seat
ASTM A182 F6/Stellite 6 AS
Piston, Disc
ASTM A182 F6 AS
Gasket
316 SS Spiral Wound Grafoil
General
Production Range
NPS 1/2" – 2", CLASS 800 – 1500
Standard & Specification
End Connection
| Key Features
Swing or Lift Piston
Bolted, Welded & Union Bonnet
Conventional Ports
Lift Type
Production Range
NPS 1/2" – 2", CLASS 150 – 1500
Standard & Specification
| Key Features
Swing or Lift Piston
Bolted, Welded & Union Bonnet
Flanged
Production Range
NPS 1/2" – 2", CLASS 150 – 1500
Standard & Specification
End Connection
Flange
| Key Features
Swing or Lift Piston
Bolted, Welded & Union Bonnet
Conventional Ports
Cast Steel Check Valve
| Main Materials
Body, Cover
CS: A216-WCB, A352-LCB, A217-WC6
AS: A217-WC9, C5, C12
SS: A351-CF8M
Seat
CS: A105, A182-F316, F11+STL
AS: F22+STL, F5a+STL, F9+STL
SS: A479-316
Disc
CS: A217-CA15/WCB+410, A351-CF8M/LCB+316
AS: A217-CA15/WC9, C5, C12+410
SS: A351-CF8M
Gasket
Graphite + 304SS
Swing
Production Range
Standard & Specification
End Connection
| Key Features
Horizontal or Vertical Lines, Bolted Cover
Available in welded or threaded seat rings
Tilting Disc
Production Range
NPS 2" – 32", CLASS 150 – 600
Standard & Specification
ASME B16.34, API 6D
Face-to-Face: ASME B16.10
End Connection
| Key Features
Horizontal Lines, Bolted Cover
Lift Piston
Production Range
NPS 2" – 12", CLASS 150 – 900
Standard & Specification
ASME B16.34, API 6D
Face-to-Face: ASME B16.10
End Connection
| Key Features
Horizontal or Vertical Lines, Bolted Cover
Integral or Removable Seat, Metal to Metal
Cryogenic
Standard & Specification
| Key Features
Precision-ground seating surface for a tight shut-off
Disc mated to seat ring for reliable sealing
Bolted disc-to-hinge arm for secure attachment
Pinned disc to prevent disengagement
Pressure Seal Check Valve
| Main Materials
Body, Bonnet
A216-WCB / A217-WC6, WC9, C5, C12 / A351-CF8M
Disc
(A216-WCB / A217-WC6, WC9, C5, C12 / A351-CF8M)+HF
Seats
CS / (A182-F11, F22, F5a, F9 / A240-316)+HF
Gasket
Soft Steel, 304SS, 316SS
| Key Features
Cast Steel
Horizontal or Vertical Lines
Piston, Y-Pattern) Lift Piston
Swing
Production Range
NPS 2" – 24", CLASS 600 - 2500
Standard & Specification
API 6D, BS 1868
Face-to-Face: ASME B16.10
End Connection
Piston
Production Range
Standard & Specification
API 6D, BS 1868
Face-to-Face: ASME B16.10
End Connection
Y Pattern
Production Range
Standard & Specification
API 6D, BS 1868
Face-to-Face: ASME B16.10
End Connection
Tilting Disc
Production Range
NPS 2" – 16", CLASS 900 - 2500
Standard & Specification
API 6D, BS 1868
Face-to-Face: ASME B16.10
End Connection
Special Check Valve
Non Slam Check Valve
Production Range
NPS 2" – 48", CLASS 150 - 2500
Standard & Specification
ASME B16.34, API 6D
Face-to-Face: ASME/ANSI B16.10
End Connection
| Main Materials
Body,
Diffuser
Standard CS: ASTM A216 WCB
Low Temp. CS: ASTM A352 LCC
SS: ASTM A351 CF8M / 316SS
Disc
ASTM A351 CF8M / 316SS
Seat
Alloy 625
| Key Features
Cast Steel, Axial Flow
Spring-Assisted Closure, Watertight Seating
Uni-body, Horizontal or Vertical Lines
Low Pressure Drop: Optimized flow path minimizes energy loss and enhances system efficiency
Dual Plate Check Valve
| Main Materials
Body
CS: A216-WCB
Low Temp. CS: A352-LCC
SS: A351-CF8M
Disc
/Disc Seat
CS: A351-CF8M, A217-CA15
Low Temp. CS / SS: A351-CF8M
Spring
Inconel X-750
Body Seat
CS: A216-WCB, Viton, Stellite, 410 SS
Low Temp. CS: A352-LCC, Buna-N, Stellite
SS: A351-CF8M, Viton, Stellite
Wetted Parts
CS: 316 SS, 410 SS
Low Temp. CS / SS: 316 SS
Wafer
Production Range
Standard & Specification
End Connection
Flange (ASME/ANSI B16.5)
| Key Features
Cast Steel, Wafer Ends
Spring Loaded, Horizontal or Vertical Lines
Lug
Production Range
NPS 2" – 48", CLASS 150 - 1500
Standard & Specification
End Connection
Flange (ASME/ANSI B16.5)
| Key Features
Cast Steel, Wafer Ends
Fully Lugged, Spring Loaded, Horizontal or Vertical Lines
Double Flanged
Production Range
NPS 8" – 48", CLASS 150 - 1500
Standard & Specification
End Connection
Flange (ASME/ANSI B16.5)
| Key Features
Cast Steel
Spring Loaded, Horizontal or Vertical Lines
Hub Ends
Production Range
NPS 2" – 12", CLASS 600 - 2500
Standard & Specification
API 594 & 6D, ASME B16.34
Face-to-Face: API 594 & 6D
End Connection
Flange (ASME/ANSI B16.5)
| Key Features
Cast Steel
Spring Loaded, Horizontal or Vertical Lines
Single Plate Check Valve
| Key Features
Cast Steel, Wafer Ends
Spring Loaded, Horizontal or Vertical Lines
Swing Wafer
Production Range
NPS 2" – 24", CLASS 150 / 300
Standard & Specification
API 594 & 6D, ASME B16.34
Face-to-Face: API 594 & 6D
End Connection
Flange (ASME/ANSI B16.5)
Wafer
Production Range
DN 50 - 600, PN 10/16/25/40
Standard & Specification
EN Standard, ASME B16.34
Face-to-Face: EN Standard
End Connection
Flange (EN Standard)
Lift Wafer
Production Range
NPS 1/2" – 8", CLASS 150 / 300
Standard & Specification
API 594 & 6D, ASME B16.34
Face-to-Face: API 594 & 6D
End Connection
Flange (ASME/ANSI B16.5)
| Key Features
Cast Steel, Wafer Ends
Spring Loaded, Horizontal or Vertical Lines