Contact Platform Support
Help CenterAPI Swing Check Valve BS 1868 Standard 2"-24" DN40-DN600 150LB-600LB ASTM A216 WCB Body Flanged End API 598 Tested Non-Return Valve
Product Spotlights
Related Products
-
BS Standard 5153 Casti Iron Pn16 Flange Swing Check ValveNegotiableMOQ: 1 Piece -
Cheng Xin ANSI Standard API Cast Steel Check ValveNegotiableMOQ: 1 Piece
-
DIN Standard DN40-DN500mm Ball Type Check ValveNegotiableMOQ: 1 Piece
-
Cheng Xin DIN Standard Carbon Steel StrainerNegotiableMOQ: 1 Piece
-
Durable Cast Iron DIN Check Valve, Manual/Worm/Electric Operation, NBR/EPDM Seat OptionsNegotiableMOQ: 1 Piece
1. Product Overview
Our API Swing Check Valve is a high-performance automatic non-return valve, designed to prevent reverse flow of fluids in industrial pipelines. Also known as a one-way valve, no-return valve, or back pressure valve, it automatically opens and closes its disc based on medium flow, protecting pumps, motors, and downstream equipment from backflow damage. Manufactured in strict compliance with BS 1868, ANSI B16.10, ANSI B16.5, and API 598 standards, it features a reliable swing disc structure, flanged end connection, and robust material construction, making it ideal for water, oil, steam, and general industrial media applications.
2. Key Features
✅ Automatic Backflow PreventionSwing disc design automatically opens for forward flow and closes tightly to stop reverse flow, protecting pumps, motors, and containers from medium backflow.
✅ Compliant with International StandardsDesigned to BS 1868, face-to-face to ANSI B16.10, flanged to ANSI B16.5, and tested to API 598, ensuring global interchangeability and quality reliability.
✅ Premium Material SelectionBody/bonnet made of ASTM A216 WCB cast steel, with 2Cr13/SS304/SS316 stems, stainless steel hanger pins, and 2Cr13/SS304/STL seats for excellent pressure, temperature, and corrosion resistance.
✅ Wide Size & Pressure RangeAvailable in sizes 2"~24" (DN40~DN600) with pressure ratings 150LB, 300LB, 600LB, covering diverse pipeline specification requirements.
✅ Easy Operation & MaintenanceSimple swing structure with reliable sealing, easy disassembly for inspection and maintenance, ensuring long-term stable operation.
✅ Versatile ApplicationSuitable for oil & gas, chemical, power plant, water treatment, HVAC, and general industrial pipeline systems.
3. Technical Specifications
| Item | Specification |
|---|---|
| Product Name | API Swing Check Valve (Non-Return Valve) |
| Structure Type | Swing Check Valve |
| Size Range | 2" ~ 24" (DN40 ~ DN600mm) |
| Pressure Rating | 150LB, 300LB, 600LB |
| Design Standard | BS 1868 |
| Face-to-Face Standard | ANSI B16.10 |
| Flange Standard | ANSI B16.5 |
| Testing Standard | API 598 |
| Body & Bonnet Material | ASTM A216 WCB Cast Steel |
| Stem Material | 2Cr13, SS304, SS316, Carbon Steel |
| Hanger Pin Material | Stainless Steel |
| Hanger Material | ASTM A216 WCB |
| Disc Material | ASTM A126B |
| Seat Material | 2Cr13, SS304, STL (Stellite) |
| Connection Type | Flanged End |
| Applicable Media | Water, Steam, Oil, General Industrial Fluid |
| Working Temperature | -29℃ ~ 425℃ (WCB Material) |
4. Material & Structure Introduction
4.1 Core Component Materials
1.Body & Bonnet: High-strength ASTM A216 WCB cast steel, with excellent pressure-bearing capacity and impact resistance, suitable for long-term operation in high-temperature and high-pressure industrial environments.
2.Disc & Hanger: Precision-machined ASTM A126B disc and WCB hanger, ensuring smooth swing movement and reliable sealing.
3.Stem & Hanger Pin: 2Cr13/SS304/SS316 stainless steel stem and pin, providing anti-corrosion and wear-resistant properties for long service life.
4.Seat: 2Cr13, SS304, or STL hard alloy seat, delivering superior wear resistance and tight shut-off performance.
4.2 Working Principle
When medium flows forward, the fluid pressure pushes the swing disc open, allowing smooth passage. When flow stops or reverses, the disc automatically swings back to the seat, closing the valve and preventing backflow. The entire process is fully automatic, requiring no manual operation.
5. Application Scenarios
1.Oil & Gas Industry: Backflow prevention in crude oil, natural gas, and refinery pipeline systems.
2.Power Plant Systems: Protection of boiler feed water, steam, and cooling water systems.
3.Chemical & Petrochemical Industry: Prevention of reverse flow in corrosive chemical media pipelines.
4.Water Treatment Systems: Backflow prevention in water supply, drainage, and sewage treatment systems.
5.HVAC & Building Systems: Protection of pumps and equipment in heating, ventilation, and air conditioning systems.
6.General Industrial Pipelines: Automatic backflow prevention for various industrial fluid media.
About Our Factory
Our factory is a professional valve manufacturer with more than 30 years of production experience, located in Xingtai, Hebei, China. The factory covers an area of 70,000 square meters, with 400+ employees, and has passed ISO9001 quality management system certification. Our products are exported to more than 50 countries and regions in Europe, America, Southeast Asia, Middle East and Africa, winning high praise from global customers. We adhere to the business philosophy of "Quality First, Customer Supreme", providing customers with high-quality products and professional services. Welcome to contact us for inquiry and cooperation!
✅ International Quality Certification
Our company is certified by ISO 9001 Quality Management System, ensuring strict quality control throughout the production process, and delivering reliable valve products to global customers.
-
🔹 Packaging and Transportation
Packaging：Standard export plywood case / carton, with foam protection to avoid damage during transportation
Delivery Time：3-7 working days for stock, 15-20 working days for customized orders
Shipping Method：Sea freight, air freight, express (DHL, FedEx, etc.)
Customization Support：Accept customized size, pressure, material, logo, etc.
Q&A
Q1: What is a swing check valve, and how does it work?
A: A swing check valve is an automatic non-return valve that uses a swing disc to control fluid flow. When medium flows forward, fluid pressure lifts the disc open for smooth passage; when flow stops or reverses, the disc automatically swings back to the seat, sealing tightly to prevent backflow. No manual operation is required, making it ideal for protecting pumps, motors, and downstream equipment.
Q2: What standards do your API swing check valves comply with?
A: Our valves are fully compliant with BS 1868 (design), ANSI B16.10 (face-to-face), ANSI B16.5 (flange), and API 598 (testing) standards, ensuring global interchangeability, quality reliability, and compliance with international project requirements.
Q3: What materials are available for your swing check valves?
A: We offer multiple material options to suit different working conditions:
Body/bonnet: ASTM A216 WCB (carbon steel, for general water/steam/oil)
Stem: 2Cr13, SS304, SS316, carbon steel
Seat: 2Cr13, SS304, STL (Stellite, for high wear resistance)
Custom stainless steel (CF8/CF8M) options are available for corrosive media.
Q4: What size and pressure ranges do your swing check valves cover?
A: Our API swing check valves are available in sizes 2"~24" (DN40~DN600) and pressure ratings 150LB, 300LB, 600LB, covering most industrial pipeline specifications. Custom sizes and pressure ratings can be provided upon request.
Q5: What applications are your swing check valves suitable for?
A: They are widely used in oil & gas, chemical, power plant, water treatment, HVAC, and general industrial pipeline systems, suitable for media like water, steam, oil, and general industrial fluids.
Q6: How do I maintain my swing check valve?
A: Regular maintenance is simple: 1) Inspect the disc and seat for wear or damage periodically; 2) Clean the valve body to remove debris; 3) Replace worn seals or components as needed. Our valve design allows easy disassembly for inspection and maintenance, minimizing downtime.
Q7: What is the difference between WCB and stainless steel swing check valves?
A: WCB (ASTM A216) carbon steel valves are cost-effective, high-strength, and suitable for high-temperature steam, oil, and general industrial media. Stainless steel (SS304/SS316) valves offer excellent corrosion resistance, ideal for corrosive media like acids, alkalis, and chemical liquids. We can recommend the best material based on your working conditions.
Q8: Can you provide test reports and certificates for your valves?
A: Yes, we provide full documentation including API 598 test reports, material test reports (MTR), and compliance certificates for all orders, ensuring traceability and quality assurance for your projects.
Q9: What is the lead time for your swing check valves?
A: Standard lead time is 7-15 working days after order confirmation, depending on order quantity and specifications. Rush orders and custom orders are available with adjusted lead times, please contact us for details.
Q10: Do you offer OEM/ODM services for swing check valves?
A: Yes, we support full OEM/ODM customization, including custom size, pressure rating, material, logo, and packaging, to meet your specific project and brand requirements.
Please Contact
Send Inquiry to This Supplier
You May Also Like
-
BS 5153 Flange Check Valve PN6 PN10 PN16 DN50-DN600 Automatic Non Return Check Valve 2"-24" EN1092-2US$ 20 - 2000MOQ: 1 Piece
-
Float Valve DN100 PN25 High-Pressure Ball Type Non Return Valve Valvula Check Tipo WaferNegotiableMOQ: 100 Pieces
-
ANSI Ductile Iron Flanged End Stainless Steel Foot ValveNegotiableMOQ: 1 Piece
-
Industrial Pump Suction Foot Valve With ANSI Flange, Ductile Iron Construction and Stainless Steel ScreenNegotiableMOQ: 1 Piece
-
Wide Size Range ANSI Flanged Foot Valve, Ductile Iron, API 598 Tested, for High Sealing PerformanceNegotiableMOQ: 1 Piece
-
ANSI DN150 150LB Cast Iron Cast Steel WCB Strainer Flange Y-Type Strainer Stainless Steel Central Heating FilterNegotiableMOQ: 100 Pieces
-
BS End Ductile Cast Iron Foot Valve DN150 PN10 Flange Pipe Fitting for Industrial Stainless Steel Bottom ValveNegotiableMOQ: 1 Piece
-
GOST Standard Single Disc Check Valve, Stainless Steel Body, DN50-DN600, PN16-PN63NegotiableMOQ: 100 Pieces
-
Stainless Steel Soft Seal High Temperature Resistant Non-Return Customize Disc Check ValveNegotiableMOQ: 100 Pieces
-
Wafer Type Single Disc Check Valve, Compact Design for Stainless Steel Piping SystemsNegotiableMOQ: 100 Pieces
