Forged steel flanged check valve

The Forged Steel Flanged Check Valve (API 602) is designed for automatic prevention of reverse flow in high-pressure, high-temperature pipelines. Featuring a compact forged body, flanged ends, and a reliable swing/piston disc mechanism, it ensures tight sealing for oil, gas, steam, and corrosive media.

Message

Product Details

1. Product Overview

2. Design & Manufacture Standards

Item	Standard / Specification
Design & Mfg.	API 602, ASME B16.34, BS 1868
Face to Face	ASME B16.10 (Short pattern for API 602)
Flange Ends	ASME B16.5 (Class 150 / 300 / 600 / 800)
Inspection & Test	API 598, ISO 5208
Marking	MSS SP-25
Pressure-Temp.	ASME B16.34

3. Working Conditions

Pressure Class	Suitable Media	Temperature Range
Class 150 / 300	Water, Oil, Gas	-29°C to 200°C
Class 600 / 800	Steam, High Temp.	-29°C to 425°C (CS)
Stainless (316/304)	Corrosive / Marine	-46°C to 550°C

4. Main Dimensions — Class 150 (Flanged End, mm)

NPS	DN	L (Face to Face)	D (Flange ⌀)	H (Center to Top)	Weight (kg)
1/2"	15	108	89	65	≈3.5
3/4"	20	117	98	70	≈4.2
1"	25	127	108	78	≈5.8
1-1/4"	32	140	117	85	≈7.5
1-1/2"	40	165	127	92	≈9.0
2"	50	203	152	110	≈14.5

Note: Dimension "L" follows ASME B16.10 short pattern (API 602). For Class 300/600/800, L is longer and weight is higher.

5. Material Specification (Typical)

No.	Component	Carbon Steel (CS)	Stainless Steel (SS)
1	Body / Bonnet	A105 / LF2	F304 / F316 / CF8M
2	Disc (Swing/Piston)	A105 + Stellite	F316 + Stellite
3	Seat Ring	A105 + Hardfacing	F316 + Hardfacing
4	Hinge Pin / Arm	A182 F6a / 410	F304 / F316
5	Gasket	SS304 + Graphite	SS316 + Graphite
6	Bonnet Bolt	A193 B7	A193 B8M
7	Nut	A194 2H	A194 8M
8	Flange	Integral Forged	Integral Forged

6. Key Features

Forged Body: Higher density and strength than cast valves, ideal for high pressure & thermal shock.

Flanged Ends: Easy installation, leak-proof gasket sealing (RF / FF available).

Automatic Flow Control: Swing type or Piston (Lift) type disc prevents backflow instantly.

Compact Design: API 602 short face-to-face, space-saving in skid & pipeline.

Hardfaced Seat/Disc: Stellite overlay ensures long service life in erosive media.

OS&Y / Bolted Bonnet: Secure bonnet assembly, easy maintenance.

7. Optional Configurations

Type: Swing Check / Piston (Lift) Check / Ball Check

Pressure: Class 150, 300, 600, 800 (Up to 2500LB on request)

Material: A105, LF2, F11, F22, F304, F316, F304L, F316L

Flange: RF (Raised Face), FF (Flat Face), RTJ (Ring Type Joint)

NACE MR0175 (Sour Service)

Cryogenic extension (for LNG/LPG)

Metal seat or Soft seat (PTFE / Devlon)

以上参数基于通用锻钢法兰止回阀（API 602）标准，图中“1 / 150 / 316”对应 1" Class 150 316SS。实际出货请以工厂实测尺寸表为准。

需要我接着把这款止回阀的页面SEO配置（标题/关键词/描述）按表单格式整理出来吗？

Null Next page

Products

Products Category