The ASTM A352 LC1 150LBS Flanged Swing Check Valve is a low-temperature, non-return valve designed to prevent reverse flow in piping systems. The body is cast from ASTM A352 LC1, a low-temperature carbon steel grade that delivers exceptional impact toughness at sub-zero temperatures down to -59°C (-75°F), making it ideal for cryogenic and cold-environment applications. The swing check design features a disc that swings on a hinge, allowing forward flow and automatically closing when flow reverses. Rated for Class 150, it is suitable for moderate-pressure systems in LNG terminals, petrochemical plants, refrigeration circuits, and offshore facilities. With flanged ends for secure, bolted installation, this valve provides reliable, maintenance-free backflow prevention with minimal pressure drop.
Technical Attributes & Specifications
1. **Body Material:** ASTM A352 Grade LC1 (Low-temp Cast Alloy Steel).
2. **Pressure Class:** ASME Class 150 (150lbs).
3. **Service Temperature:** Rated for low-temperature service down to **-46°C**.
4. **Design Standard:** API 594, API 6D, or BS 1868.
5. **Connection Type:** Flanged (Raised Face) per ASME B16.5.
6. **Face-to-Face:** Compliant with ASME B16.10 standards.
7. **Disc Type:** Swing type with internal or external hinge pin.
8. **Seating:** Metal-to-metal (Stellite hard-faced) or Resilient seating.
9. **Trim Material:** Standard API Trim #1 or #8 (13Cr/Stellite).
10. **Hinge Pin:** Heavy-duty stainless steel for corrosion resistance.
11. **Cover Design:** Bolted cover for easy access to internals and maintenance.
12. **Gasket Type:** Spiral wound stainless steel with graphite or PTFE filler.
13. **Flow Path:** Full-port design for minimal pressure drop and turbulence.
14. **Impact Testing:** Mandatory Charpy V-Notch testing per ASTM A352 requirements.
15. **Installation:** Horizontal or vertical (with upward flow) orientation.
16. **Casting Quality:** 100% Visual inspection and NDT (Radiographic/Magnetic Particle).
17. **Testing Standards:** Shell and seat pressure testing per API 598.
18. **Low Emission:** Designed to prevent fugitive emissions from the cover joint.
19. **Anti-Corrosion:** External surface protected with low-temp epoxy coating.
20. **Applications:** Petroleum refining, gas liquefaction, and chemical processing.
Contact: Jorge Yang
Phone: +86-13588258503
E-mail: sales@fluvalve.com
Whatsapp:+86-13588258503
Add: Room 331, South Building,Building 1, No.3 Jinpeng Street, Sandun Town, Xihu District, Hangzhou City, Zhejiang Province
