Contact Platform Support
Help CenterForged Steel Marine Self Closing Valve ANSI 150LB Butt-Weld End Self-Closing Operation
Product Spotlights
Related Products
-
Marine Self Closing Valve DN20-DN80 PN25 Flanged End Spring Return Automatic ShutoffNegotiableMOQ: 1 Unit -
Marine Self Closing Valve With 1 Year Warranty And Mill Test Report DN15-DN50 Cast SteelNegotiableMOQ: 1 Unit
-
Marine Self Closing Valve Cast Steel Body PN40 Threaded Connection For Fuel Oil SystemsNegotiableMOQ: 1 Unit
-
316L Marine Self Closing Valve 1/2"-2" NPT Threaded Self-Closing Mechanism IP66 RatedNegotiableMOQ: 1 Unit
-
Marine Self Closing Valve Standard Compliant Full Technical Support Available Upon RequestNegotiableMOQ: 1 Unit
Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our premium Forged Steel Marine Self Closing Valve ANSI 150LB Butt-Weld End Self-Closing Operation. As an ISO9001 certified manufacturer with over eight years of industry experience, we deliver valves that combine robust forged steel construction with reliable self-closing functionality, specifically designed for demanding marine environments. Our valves ensure automatic shut-off in emergency situations, protecting personnel and equipment from potential leaks or backflow hazards. With annual exports exceeding US$1 million and global distribution across North America, Europe, Asia, and Africa, our valves are trusted by shipbuilders, offshore platforms, and industrial plants worldwide.
Key Features & Technical Specifications
- Material Excellence: Made from high-quality forged steel (ASTM A105 / A350 LF2) for superior strength, corrosion resistance, and longevity in harsh marine atmospheres.
- Self-Closing Mechanism: Spring-return actuator ensures automatic closing when handle is released, minimizing risk of human error and providing fail-safe operation.
- Butt-Weld End Connection: Full penetration butt-weld ends provide leak-proof, permanent installation with high pressure integrity, ideal for critical piping systems.
- ANSI 150LB Class: Designed to ANSI B16.5/ASME B16.34 standards, suitable for working pressures up to 285 psi (19.6 bar) at ambient temperature.
- Marine Application: Specifically engineered for shipboard systems including fuel oil, lube oil, seawater cooling, ballast, and fire-fighting lines.
- Trim Options: Available with stainless steel or alloy trim (13Cr, 304, 316) for enhanced corrosion resistance in aggressive media.
- Testing & Quality: 100% hydrostatic testing per API 598, with optional shell test, seat test, and fire-safe design (optional).
Product Specifications (Table)
| Parameter | Value |
|---|---|
| Pressure Rating | ANSI 150LB (PN20) |
| Size Range | 1/2" – 12" (DN15 – DN300) |
| End Connection | Butt-Weld (BW) per ASME B16.25 |
| Operation | Self-Closing (Spring Return) |
| Body Material | Forged Steel (ASTM A105 / A350 LF2) |
| Trim Material | 13Cr / SS304 / SS316 (optional) |
| Design Standard | API 602 / BS 5352 / ASME B16.34 |
| Test Standard | API 598 |
| Temperature Range | -20°C to 200°C (depending on sealing) |
| Certification | ISO9001:2015 (available upon request) |
Detailed Product Benefits
Our forged steel self-closing valve offers unmatched safety and reliability in marine applications. The self-closing operation ensures that the valve automatically returns to the closed position when the handle is released, preventing accidental flow and reducing the risk of spills or leaks. This is particularly critical in fuel transfer lines, engine room systems, and emergency shutdown circuits where quick response is essential.
The butt-weld end provides a permanent, leak-proof connection that eliminates potential leak paths associated with flanged or threaded joints. This design is ideal for high-pressure and high-temperature steam, oil, and gas services commonly found on ships and offshore platforms.
Forged steel construction offers superior grain structure and mechanical properties compared to cast steel, resulting in higher strength, better impact resistance, and longer service life. Our valves undergo rigorous hydrostatic testing at 1.5 times the rated pressure to ensure zero leakage. Optional fire-safe design (API 607) and NACE MR0175 compliance are available for sour service environments.
Additionally, the compact design of forged steel valves saves space in tight engine rooms and piping layouts. The handwheel with spring-return mechanism is ergonomically designed for easy operation even with gloves. Maintenance is minimal due to the robust construction and self-lubricating stem packing.
Trust & Credibility
Since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. has been dedicated to manufacturing high-quality industrial valves. Our ISO9001:2015 certified quality management system ensures consistent product excellence. With annual export values exceeding US$1 million and shipping from major ports including Shanghai, Guangzhou, Hong Kong, and Beijing, we have built a solid reputation across North America, South America, Europe, Southeast Asia, Africa, and the Middle East.
We understand the critical nature of marine valve applications and offer comprehensive technical support, including installation guidance, maintenance manuals, and spare parts availability. Our factory is equipped with CNC machining centers, heat treatment facilities, and advanced testing equipment to guarantee every valve meets stringent customer requirements.
Choose our forged steel marine self-closing valve for peace of mind and long-term reliability. Contact us today for a quotation or technical consultation. We are ready to support your project with customized solutions and prompt delivery.
Frequently Asked Questions (FAQ)
-
Q: What materials are available for the valve body and trim?
A: The standard body is forged steel (ASTM A105 or A350 LF2 for low temperature). Trim options include 13Cr, SS304, SS316, or alloy steel. For corrosive media, we recommend stainless steel trim. Please specify your requirements when ordering. -
Q: What is the maximum working pressure of this ANSI 150LB valve?
A: The valve is rated for 150LB class per ASME B16.34, with a maximum allowable working pressure of 285 psi (19.6 bar) at ambient temperature. Pressure decreases with higher temperature; please refer to the pressure-temperature chart for exact values. -
Q: Can the self-closing mechanism be adjusted for different closing speeds?
A: The spring-return mechanism is factory-set to provide a consistent closing force. However, optional dampening or adjustable closing speed can be provided upon request for specific applications. Contact our engineering team for details. -
Q: What is the standard size range for this valve?
A: We offer sizes from 1/2 inch to 12 inches (DN15 to DN300). Larger sizes may be available upon special request. Please consult our sales team for non-standard dimensions. -
Q: Is the valve suitable for seawater or marine environments?
A: Yes, the forged steel body with appropriate coating (e.g., epoxy or zinc-rich primer) is suitable for marine atmospheres. For direct contact with seawater, we recommend using stainless steel trim or a duplex stainless steel body (custom order). -
Q: How do I install the butt-weld end valve?
A: Butt-weld ends require welding to the pipe. We recommend following ASME B31.3 or applicable marine standards for welding procedures. Ensure proper preheat and post-weld heat treatment if required. Our team can provide welding guidelines. -
Q: What certifications do you provide with the valve?
A: Our factory is ISO9001:2015 certified. We can provide material certificates, hydrostatic test reports, and inspection certificates as per API 598. Third-party inspection (e.g., by classification society such as DNV, Lloyds, or ABS) is available upon request at additional cost. -
Q: What is the typical lead time for this valve?
A: Standard sizes up to 6 inches typically ship within 2-4 weeks. Larger sizes or custom orders may require 4-8 weeks. We maintain a stock of popular sizes for quick delivery. Please check with our sales team for current lead times.
Send Inquiry to This Supplier
You May Also Like
-
Marine Audible Self Closing Valve With Mill Test Report Cast Steel DN15 DN50 PN1.6 4.0MPa FlangedNegotiableMOQ: 1 Unit
-
Marine Audible Self Closing Valve for Fuel Safety Systems Cast Steel DN15 DN50 PN1.6 4.0MPaNegotiableMOQ: 1 Unit
-
Cast Steel Marine Quick Closing Valve DN25-DN100 PN1.6-6.4MPa FlangedNegotiableMOQ: 1 Unit
-
1 Year Warranty Marine Audible Self Closing Valve Cast Steel DN15 DN50 PN1.6 4.0MPa FlangedNegotiableMOQ: 1 Unit
-
DNV BV Approved Marine Audible Self Closing Valve DN15 DN50 1.6 4.0MPa Cast Steel FlangedNegotiableMOQ: 1 Unit
-
Flanged Marine Audible Self Closing Valve DN15 DN50 1.6 4.0MPa Cast Steel Body Safety ValveNegotiableMOQ: 1 Unit
-
Marine Audible Self Closing Valve DN15 DN50 PN1.6 4.0MPa Cast Steel Flanged DNV BV CertifiedNegotiableMOQ: 1 Unit
-
Cast Steel Marine Audible Self Closing Valve DN15 DN50 PN1.6 4.0MPa With Audible AlarmNegotiableMOQ: 1 Unit
-
Marine Audible Self Closing Valve Cast Steel DN15 DN50 PN1.6 4.0MPa Flanged Alarm FunctionNegotiableMOQ: 1 Unit
-
Audible Self Closing Valve for Marine Fuel Systems Cast Steel DN15 DN50 PN1.6 4.0MPa FlangedNegotiableMOQ: 1 Unit
