300LB Flanged RF Cast Steel WCB American Standard Swing Check Valve BS1868

Product Overview

The 300LB Flanged RF Cast Steel WCB American Standard Swing Check Valve BS1868 is a heavy-duty industrial check valve strictly designed and manufactured per BS1868, ASME B16.34 and API 598 standards. As a typical swing type non-return valve, it integrates core advantages: 300LB pressure rating, RF raised face flanged connection, ASTM A216 WCB cast steel body, BS1868 compliance and American standard dimensional criteria, effectively preventing medium backflow and protecting pipeline system safety.

Different from ordinary check valves, this BS1868 swing check valve adopts WCB carbon steel casting with compact structure, good rigidity and excellent sealing performance. The swing disc opens freely under positive medium pressure and closes automatically to stop backflow when flow reverses. Equipped with RF raised face flange, it ensures stable and leak-free connection with pipelines. Suitable for -29℃ to 425℃ working conditions, this 300LB WCB check valve is widely used in petroleum, chemical, power generation and natural gas industries.

Core Product Features

1. BS1868 American Standard Compliance

This 300LB swing check valve fully complies with BS1868 British standard and ASME B16 series American standards. Face-to-face dimensions per ASME B16.10, flange dimensions per ASME B16.5, hydrostatic and sealing tests per API 598. It meets international industrial pipeline acceptance criteria and is compatible with global American standard pipeline projects.

2. 300LB (PN50) Pressure Rating

Designed for 300LB (PN50) medium pressure working conditions. The thickened WCB cast steel body provides high pressure resistance and structural stability. It withstands long-term medium impact and pressure fluctuation, ensuring reliable backflow prevention in medium-pressure industrial pipelines.

3. ASTM A216 WCB Cast Steel Body

Constructed from premium ASTM A216 WCB carbon steel. The cast steel structure features uniform texture, high mechanical strength and good weldability. It offers excellent resistance to deformation and corrosion, adapting to long-cycle continuous operation in industrial pipelines.

4. RF Raised Face Flanged Connection

Adopts RF (Raised Face) flanged ends per ASME B16.5. The raised face design provides larger sealing area and higher connection tightness. It enables easy installation and maintenance, effectively eliminating leakage risks at flange joints.

5. Swing Type Disc Structure

Equipped with swing type disc that rotates around the shaft inside the valve body. The disc opens fully under positive flow with low resistance and closes tightly under reverse pressure to prevent backflow. Metal-to-metal hard sealing ensures bidirectional bubble-tight zero leakage.

6. Bolted Bonnet & Renewable Trim

Features bolted bonnet design for easy disassembly and maintenance. The seat and disc trim are renewable, extending service life and reducing maintenance costs. The sealing surface is overlaid with Stellite hard alloy for wear resistance and long-term durability.

Technical Specifications

Installation, Operation & Maintenance Notes

1. Installation Requirements

Install the valve in horizontal pipelines with the bonnet upward. Ensure flow direction matches the arrow marked on the valve body. Reserve enough space for disc movement and maintenance. Avoid installing at pipeline low points to prevent sediment accumulation affecting sealing.

2. Operation Guidelines

This swing check valve operates automatically by medium pressure without manual control. Regularly check disc flexibility and sealing tightness. Avoid frequent reverse impact to prevent disc deformation and sealing surface damage.

3. Maintenance & Inspection

Periodically inspect flange bolt tightness and sealing surface condition. Disassemble and clean the valve if leakage occurs; replace damaged trim parts promptly. Lubricate the shaft with high-temperature grease every 6 months to ensure flexible rotation.

Wide Application Scenarios

•Petroleum & Refinery: Crude oil transmission pipelines, refining process lines, product transfer systems

•Chemical Industry: Medium-pressure chemical pipelines, reaction kettle outlet lines, corrosive medium systems

•Power Generation: Auxiliary steam pipelines, cooling water systems, boiler feedwater lines

•Natural Gas: Medium-pressure gas transmission pipelines, distribution systems, compressor station lines

•General Industrial: Water treatment plants, heating systems, industrial circulating pipelines

Advantages of Our 300LB BS1868 WCB Swing Check Valve

✅ Full Standard Compliance — BS1868 + ASME + API 598 certified, fully compatible with American standard industrial pipelines.

✅ Premium WCB Cast Steel — ASTM A216 WCB body offers high strength, durability and cost-effectiveness.

✅ RF Flange Leak-Proof — Raised face flange ensures tight sealing and easy installation.

✅ Reliable Swing Disc — Automatic backflow prevention with low resistance and tight sealing.

✅ Stellite Hard Seal — Wear-resistant hard alloy overlay extends service life.

✅ Cost-Effective Solution — Renewable trim design reduces long-term maintenance costs.

Product Certification & Order Information

MOQ: 1 Unit

Production Lead Time: 15-30 working days for standard 300LB sizes

Supporting Certificates: EN10204 3.1 Material Certificate, API 598 Test Report, ISO9001 Quality Certificate

Export Packaging: Anti-rust oil treatment + Reinforced fumigation-free export wooden case

Quality Warranty: 12-month professional warranty + lifelong technical support

Contact Us for customized sizes, special materials and bulk preferential quotation of 300LB RF flanged WCB BS1868 swing check valves.

What Is a Flanged Cast Steel WCB Check Valve

A Flanged Cast Steel WCB Check Valve is an automatic non return valve designed to allow fluid to flow in one direction while preventing reverse flow in pipeline systems. The valve body is manufactured from WCB cast carbon steel, which offers excellent strength and durability under demanding conditions. Flanged ends provide secure connections and simplify maintenance procedures. This type of valve is widely used in oil and gas, power generation, chemical processing, and water treatment applications.

Why the Flanged Cast Steel WCB Check Valve Matters

This valve is important because it protects pumps, compressors, and other critical equipment from damage caused by backflow. Its automatic operation requires no external power or manual intervention, helping maintain stable process conditions. WCB cast steel provides strong mechanical properties and resistance to pressure fluctuations. The flanged design allows convenient installation and inspection, making the valve a dependable component in industrial piping systems.

Common Product Types by Flanged Cast Steel WCB Check Valve

Common product types include swing check valves, lift check valves, piston check valves, and tilting disc check valves. Swing check valves are widely used for general service, while lift and piston check valves are suitable for higher pressure applications. Non slam and dampened designs are available to reduce water hammer effects. Different seat materials and trim options can be selected for corrosive, abrasive, and high temperature environments.

Key Advantages of Flanged Cast Steel WCB Check Valve

The valve offers reliable backflow prevention, automatic operation, and low maintenance requirements. WCB cast steel construction provides excellent strength and long service life. The flanged connection ensures secure sealing and facilitates maintenance activities. Properly designed internal components help minimize pressure loss and improve flow efficiency. With suitable materials and seat configurations, the valve can perform effectively in a wide variety of industrial operating conditions.

Flanged Cast Steel WCB Check Valve Machine Structure and Core Stations

Manufacturing begins with casting the body, bonnet, disc, and hinge components from WCB carbon steel. Core stations include heat treatment, precision CNC machining of flange faces, sealing surfaces, hinge bores, and internal flow passages. Assembly stations install the disc, hinge arm, pin, gasket, and bonnet components. Final operations include seat lapping, pressure testing, surface coating, cleaning, marking, and packaging to ensure reliable sealing performance and dimensional accuracy.