API 6D Monogram Licensed: No. 6D-1832
CE PED 2014/68/EU Module H: NB 2195
Oxy Oman Approved AML: OMN-QAC-862-002
Home / Products / Check Valves / Forged Check Valve (API 602)
API 602 CERTIFIED CLASS 800 - 2500 PISTON & SWING NACE MR0175

Forged Steel Check Valve

Engineered for high-pressure severe piping loops, boiler feed lines, and refinery auxiliary vents. Fully compliant with API 602 and ASME B16.34, featuring solid forged bodies (A105, F316, F11, F22) in piston-lift, ball-check, and swing designs with zero backflow leakage.

Size Range NPS 1/2" to 2" (DN 15 to 50)
Pressure Class ASME Class 800 to 2500 (PN 130 - 420)
End Connections Socket Weld (SW), NPT, Flanged RF/RTJ
Testing Standard API 598 Zero Leakage Rate A
TSV Forged Steel Check Valve
MODEL FAMILY TSV-FCV-API602
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Design & Manufacturing Specification

Design Standards API 602, ASME B16.34, BS 5352
Size & Pressure Scope NPS 1/2" to 2" (DN 15 to 50); ASME Class 800, 1500, 2500
Body Materials ASTM A105, A182 F11, F22, F304, F316, F316L, F51 (Duplex), Inconel
Disc / Piston Trim API Trim 8 (13Cr + Stellite), API Trim 5 (Full Stellite 6 Hardfacing), 316SS
Factory Pressure Test 100% Tested per API 598 (Hydrostatic Shell, Hydrostatic Seat, High Pressure Gas)

Complete Forged Check Valve Models

Forged Steel Piston Lift Check Valve
PISTON LIFTCLASS 800/1500

Forged Steel Piston / Lift Check Valve

Heavy spring-assisted vertical piston disc providing fast anti-slam closure in pulsating gas and boiler loops.

Size1/2" to 2"
Class800 - 2500
BodyASTM A105 / F316
Forged Steel Swing Check Valve
SWING TYPENPT / SW

Forged Steel SW / NPT Swing Check Valve

Compact bolted bonnet swing disc minimizing flow turbulence and pressure loss in high-pressure piping skids.

Size1/2" to 2"
ClassClass 800
BodyASTM A105N
Integral Flanged Forged Check Valve
INTEGRAL FLANGEDCLASS 1500 RTJ

Integral Flanged Forged Alloy Check Valve

One-piece forged flange body eliminating girth welds for offshore manifolds and sour gas service.

Size1/2" to 2"
Class150 to 1500 RF/RTJ
BodyASTM A182 F316

Explore All 5 Check Valve Sub-Categories

1:1 aligned with TSV factory catalog. Engineered non-return valves preventing backflow and water hammer in industrial piping.

Dual Plate Check Valve

API 594 compact wafer design with spring-loaded dual plates for rapid non-slam closure.

API 594 Non-Slam View Dual Plate Check Valve →

Flanged Swing Check Valve

Heavy bolted cover swing check valve providing full unobstructed bore for low pressure drop.

Full Bore Swing View Flanged Swing Check Valve →

Single Disc Wafer Check Valve

Ultra-thin short pattern wafer check valve easily sandwiched between ASME B16.5 flanges.

Short Pattern View Single Disc Wafer Check Valve →

Forged Piston / Ball Check Valve

Class 800 - 2500 high-pressure forged piston lift check valve for boiler feed and pump discharge.

Current Series View Page Top ↑

Threaded & Socket Weld Check Valve

High-integrity threaded NPT/BSPT and socket weld check valves for chemical dosing skids and power packs.

Thread / SW View Threaded & Socket Weld Check Valve →

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