Cast Steel A352-LCB 300Lb Dual Plate Wafer Check Valve - API 594, 2" to 24"
Tengs Valve supplies high-quality Cast Steel A352-LCB Dual Plate Wafer Check Valves (Double Disc Non-Return Valves) for ANSI Class 300Lb / PN50, manufactured to API 594 and API 6D standards with inspection and test per API 598. These dual plate wafer check valves feature dual plate / double disc design with wafer type connection, stainless steel trim, and Inconel X-750 spring for fast closing response. Available sizes 2″ to 24″ (DN50 to DN600). Body material is Low Temperature Carbon Steel A352-LCB, suitable for low temperature service. Trim materials include Stainless Steel 304 / 316, A351-CF8, A351-CF8M. Ideal for oil & gas, LNG, low temperature pipelines, chemical, and water treatment systems. Industrial LCB dual plate wafer check valve supplier and exporter.
Specifications for LCB Dual Plate Wafer Check Valve
• Type of Valve: Check Valve
• Type of Connection: Wafer Type
• Type of Disc: Dual Plate, Double Disc
• Size Range: 2″ to 24″ (DN50 to DN600)
• Working Pressure: ANSI 300LB / PN50
• Type of Body Material: Low Temperature Carbon Steel, A352-LCB
• Type of Trim Material: Stainless Steel 304 / 316, A351-CF8, A351-CF8M
• Type of Spring Material: Stainless Steel SS316, Inconel X-750
• Design & Manufacture: API 594, API 6D
• Face to Face: API 594, API 6D
• Inspection & Test: API 598
• Other materials and pressure ratings on request.
LCB Dual Plate Wafer Check Valve Main Parts and Materials
| Part Name | Standard Material | Optional Material |
|---|---|---|
| Body | A352-LCB | A216 WCB / CF8 / CF8M |
| Disc (Dual Plate) | A351-CF8 / CF8M | SS304 / SS316 |
| Seat / Trim | SS304 / SS316 | 13Cr / STL |
| Spring | SS316 | Inconel X-750 |
| Hinge Pin / Shaft | Stainless Steel | SS316 / Duplex |
| Gasket | Graphite / PTFE | EPDM / Viton |
Reference: API 594, API 6D, API 598. Materials may vary by model and pressure rating. Contact us for confirmed material certificate.
Main Dimensions of 300Lb Dual Plate Wafer Check Valves
| Size | 2″ | 3″ | 4″ | 5″ | 6″ | 8″ | 10″ | 12″ | 14″ | 16″ | 18″ | 20″ | 24″ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L (mm) | 60 | 73 | 73 | 86 | 98 | 127 | 146 | 181 | 222 | 232 | 264 | 292 | 318 |
Reference: API 594, API 6D. Dimensions may vary by manufacturer. Contact us for confirmed drawing and quotation.
Industrial Check Valve Dimension Details
Typical Applications of A352-LCB Dual Plate Wafer Check Valve
• Low temperature pipelines: LCB (Low Temperature Carbon Steel) suitable for service down to -46°C.
• LNG and cryogenic systems: reliable non-return protection in low temperature gas processing.
• Oil & gas transmission: compact wafer design ideal for space-limited installations.
• Pump discharge lines: dual plate design provides fast closing and minimal water hammer.
• Chemical and petrochemical: stainless steel trim for corrosive media.
• Water treatment: efficient non-return protection in large diameter pipelines.
FAQ - A352-LCB Dual Plate Wafer Check Valve 300Lb
Q1: What is a dual plate wafer check valve?
A: A dual plate wafer check valve (also called double disc check valve) uses two spring-loaded semi-circular discs mounted on a central hinge pin. It is installed between two pipe flanges (wafer type), providing compact size, light weight, and fast closing response compared to traditional swing check valves.
Q2: What is A352-LCB material?
A: A352-LCB is a low temperature carbon steel casting grade per ASTM A352. It is suitable for low temperature service down to -46°C (-50°F), making it ideal for LNG, cryogenic, and cold climate pipeline applications.
Q3: What are the pressure rating and size range?
A: This LCB dual plate wafer check valve is rated ANSI Class 300Lb (PN50), with sizes from 2″ to 24″ (DN50 to DN600). Other pressure ratings and sizes are available on request.
Q4: What is the difference between dual plate and swing check valve?
A: A dual plate check valve uses two spring-loaded discs and is wafer mounted, offering compact size, light weight, and fast closing. A swing check valve uses a single hinged disc and is flanged or BW mounted, suitable for larger sizes and higher flow rates. Dual plate is preferred for space-limited and low-temperature applications.
Q5: Why is Inconel X-750 spring used?
A: Inconel X-750 is a nickel-chromium alloy with excellent spring properties at low and high temperatures, as well as good corrosion resistance. It is often specified for low temperature and corrosive service where standard stainless steel springs may not perform reliably.
Q6: What standards does this valve comply with?
A: Design and manufacture per API 594 and API 6D. Face to face per API 594 / API 6D. Inspection and test per API 598. Other materials and pressure ratings are available on request.
Get a Fast Quote for A352-LCB Dual Plate Wafer 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
Email Us Now
Related Valve Pages
• Industrial Check Valve - Cast Steel Check Valve Main Page
• Gate Valve - Cast & Forged Gate Valve Series
• Globe Valve - Cast Steel Globe Valve Series
• Ball Valve - Ball Valve Series Overview
• Butterfly Valve - Butterfly Valve Series Overview
