Cast Steel Swing Check Valve 300LBS - API 6D, BS 1868, 2" to 24"
Tengs Valve supplies high-quality Cast Steel Swing Check Valves (Non-Return Valves) for ANSI Class 300LB / PN50, manufactured to API 6D, ANSI B16.34, and BS 1868 standards. These swing check valves feature bolted bonnet, swing type disc design with double flanged or butt weld (BW) ends. Available in sizes 2″ to 24″ (DN50 to DN600). Materials include carbon steel (WCB, LCB), stainless steel (CF8, CF8M, CF3, CF3M), alloy steel (WC6, WC9, C5, C12), and duplex stainless steel (4A, 5A). Ideal for oil & gas, chemical, power generation, and water treatment pipeline systems.
Cast Steel Swing Check Valve 300LBS Specifications
• Design & Manufacture: API 6D, ANSI B16.34, BS 1868
• Construction: Bolted Bonnet, Swing Type Disc
• Size Range: 2″ to 24″ (DN50 to DN600)
• Pressure Ratings: ANSI 300LB / Class 300 / PN50
• End Connections: Flanged (RF), Butt Weld (BW)
• Body Materials: WCB, LCB, CF8, CF8M, CF3, CF3M, WC6, WC9, C5, C12, 4A, 5A or Equivalent
• Trim Materials: Various trim materials available to suit service conditions
• Sour Service: NACE MR 0175 on Request
Swing Check Valve 300LBS Main Parts and Materials
| Part Name | Material | ||
|---|---|---|---|
| Carbon Steel (WCB) | Stainless Steel (CF8 / CF8M) | Alloy Steel (WC6 / WC9) | |
| Body | A216 WCB | A351 CF8 / CF8M | A217 WC6 / WC9 |
| Bonnet / Cover | A216 WCB | A351 CF8 / CF8M | A217 WC6 / WC9 |
| Disc | WCB + 13Cr / STL | CF8 / CF8M | WC6 / WC9 + 13Cr / STL |
| Seat | 13Cr / STL | SS304 / SS316 | 13Cr / STL |
| Hinge Pin | A182 F6a | A182 F304 / F316 | A182 F6a / F11 |
| Bolts/Nuts | A193 B7 / A194 2H | A193 B8 / A194 8, B8M / 8M | A193 B7 / A194 2H |
| Gasket | Graphite / PTFE | Graphite / PTFE | Graphite / PTFE |
Reference: API 6D, BS 1868. Materials may vary by model and pressure rating. Contact us for confirmed material certificate.
Reference: API 6D, BS 1868. Dimensions may vary by manufacturer. Contact us for confirmed drawing and quotation.
Industrial Check Valve Dimension Details
Typical Applications of 300LBS Swing Check Valve
• Oil & gas transmission pipelines: crude oil, natural gas, and refined product lines at medium pressure.
• Refinery and petrochemical plants: process lines requiring reliable non-return protection.
• Power generation: steam, feedwater, and cooling water systems.
• Water treatment and pump discharge: preventing backflow and protecting pumps.
• General industrial pipelines: PN50 pressure rating suitable for a wide range of applications.
• Sour service: available with NACE MR 0175 compliance on request.
FAQ - Cast Steel Swing Check Valve 300LBS
Q1: What is a 300LBS swing check valve?
A: A 300LBS swing check valve is a non-return valve designed for ANSI Class 300 pressure rating. It uses a swing type disc that opens with forward flow and closes automatically to prevent backflow. It is manufactured to API 6D, ANSI B16.34, and BS 1868 standards.
Q2: What is the pressure rating of ANSI Class 300?
A: ANSI Class 300 is a medium pressure rating, approximately equivalent to PN50. It is suitable for oil, gas, refinery, petrochemical, water treatment, and general industrial pipeline systems.
Q3: What materials are available for 300LBS swing check valves?
A: Common body materials include WCB, LCB, CF8, CF8M, CF3, CF3M, WC6, WC9, C5, C12, 4A, and 5A. Various trim materials are available to suit different service conditions.
Q4: What end connections are available?
A: 300LBS swing check valves are available with flanged ends (RF) and butt weld (BW) ends. Both are suitable for Class 300 pressure rating in oil & gas and industrial pipelines.
Q5: Is the 300LBS swing check valve suitable for sour service?
A: Yes. NACE MR 0175 compliance is available on request for sour service applications. Please specify this requirement when requesting a quotation.
Q6: What is the difference between a swing check valve and a lift check valve?
A: A swing check valve uses a hinged disc that swings on a hinge pin, suitable for larger sizes and horizontal pipelines. A lift check valve uses a piston / lifting disc that moves along the flow axis, suitable for smaller sizes and vertical pipelines with faster closing response.
Get a Fast Quote for 300LBS Swing Check Valve
Send us your size, pressure rating, material, end connection, and quantity. Our team will reply within 24 hours with price, drawing, and delivery time.
Email: sales@tengsvalve.com
Website: Request a Quote Online
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