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Forged Steel Flanged Check Valve Descriptions
Forged steel flanged check valve is the most common type of non return valve in the oil & gas filed and power plant, because they can be applicable to water, oil and gas with high temperature and high pressure. Our forged steel check valve includes lift check valve, swing check valve and Y type check valve, which is available with materials of steel ASTM A105N, alloy steel A182 F11, A182 F22, stainless steel A182 F304/L, A182 F316/L, A182 F5, duplex s.s. A182 F51, low temperature steel A350 LF2, with ends connection of socket welded, butt-welded, threaded, welded flanged and intergral flanged. Flowspec Luokai manufactures the forged steel flanged check valve in accordance with API602, ASME B16.34 / ISO15761. Welcome to contact us for detailed information and best quotes if you have any questions or inquiries.
1. FEATURES
- Full port or reduced port
- Bolted cover
- Pressure seal bonnet or welded bonnet available
- Body guided disc
- Spiral wound gasket or ring joint gasket
- Piston type are standard, swing disc style available
- Uni-directional
3. STANDARDS
- Design & manufacturing: API602, ASME B16.34 / ISO15761
- Face to face: manufacturer’s, ASME B16.10
- Socket welded: ASME B16.11
- Threaded ends: NPT ASME B1.20.1
- Butt-welded: ASME B16.25
- Flanged ends: ANSI B16.5 RF
- Inspection & testing: API598
- Fugitive emission class: B
- FE testing: MESC 77/312, ISO15848-2
- TAT: MESC 77/300
2. TECHNICAL SPECIFICATIONS
- 150LB~2500LB
- Size: 1/4″~2″ (DN6~50mm)
- Materials: steel (A105), alloy steel (A182 F11, F22, F5), stainless steel(A182 F304/L, F316/L), duplex s.s.(A182 F51), low temperature steel(A350 LF2)
- Applicable medium: water, oil, gas, steam
- Applicable temperature: -29℃~+425℃(higher temperature and lower temperature are available)
- Sour service conditions: NACE MR-01-75
4. APPLICATIONS
- Petroleum industry
- Oil & gas
- Power plant
- Chemical industry
- Textile
- Printing & dyeing
- Steel plant
- Metallurgical Plant
Why Choose Flowspec Luokai
45+ Years Experience
Founded in 1978, manufacturing industrial valves for over four decades with proven reliability worldwide.
Global Certifications
ISO 9001, CE/PED, WRAS, FM, UL, API approved — compliant with international quality and safety standards.
OEM Custom Solutions
Flexible design and manufacturing per your specifications — material, size, pressure, actuation tailored to project needs.
Worldwide Delivery
Exported to 5 continents — North & South America, Europe, Middle East, Southeast Asia, and Africa.
Our Service Promise
Strict Quality Control
Every valve tested to API 598, EN 12266 before shipment
Timely Global Delivery
Reliable logistics to 5 continents with secure packaging
OEM & Custom Design
Tailored material, size, pressure and actuation to your specs
Dedicated After-Sales
Technical support and service throughout product lifecycle