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Home > Industrial Equipment & Components > Valve > Check Valve > Direct-Acting Marine Steam Check Valve for Offshore Platform Applications, 304 Stainless Steel, DN80, PN4.0MPa, Quick Closure, Anti-Water Hammer
Direct-Acting Marine Steam Check Valve for Offshore Platform Applications, 304 Stainless Steel, DN80, PN4.0MPa, Quick Closure, Anti-Water Hammer
Product Spotlights
Direct-Acting Marine Steam Check Valve (DN80, PN4.0MPa) features 304 stainless steel, quick-closure and anti-water hammer design. Ideal for offshore platform steam systems, ensures zero leakage, low maintenance, and reliable non-return protection. ISO9001 certified, customized flanges available.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Material:
Other, 304 Stainless Steel
Application:
Other, Marine & Offshore Platform Steam Systems
Function:
Other, Anti-Water Hammer
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Material
Other, 304 Stainless Steel
Application
Other, Marine & Offshore Platform Steam Systems
Function
Other, Anti-Water Hammer
Size
DN80
Pressure Rating
PN4.0MPa (40 bar)
Type
Direct-Acting, Quick-Closure
Connection
Flanged (ASME/DIN available)
Certification
ISO9001
Brand
Shanghai Zhibang Valve
Color
Natural Stainless Steel Finish
Shanghai Zhibang Valve Manufacture Co., Ltd is proud to present our Direct-Acting Marine Steam Check Valve, specifically engineered for demanding offshore platform applications. Crafted from premium 304 stainless steel with a size of DN80 and pressure rating of PN4.0MPa, this valve delivers reliable non-return performance in high-temperature steam systems. Its quick-closure mechanism and anti-water hammer design ensure system safety and longevity even under rapid flow changes. With over 8 years of manufacturing expertise and ISO9001 certification, we guarantee a product that meets the rigorous standards of the global marine and offshore industry.
Product Features & Technical Specifications
- Direct-Acting Design – No external power required; spring-assisted closure ensures immediate sealing upon flow reversal.
- Anti-Water Hammer Capability – Specially engineered disc and spring combination absorbs shock waves, preventing pipe damage.
- 304 Stainless Steel Construction – Excellent corrosion resistance in marine chloride environments; suitable for steam, condensate, and brine.
- Quick Closure Mechanism – Response time less than 0.3 seconds, minimizing backflow and pressure surges.
- PN4.0MPa Pressure Rating – Robust performance in medium-pressure steam lines up to 40 bar.
- Flanged Connections – Customizable to ASME 150/300 or DIN PN40 flanges for easy installation.
- Low Maintenance – Simple internal structure with only one moving part; long service life even in continuous operation.
Key Parameters (Table)
| Parameter | Value |
|---|---|
| Nominal Diameter (DN) | DN80 (3") |
| Nominal Pressure (PN) | 4.0 MPa (40 bar) |
| Body Material | 304 Stainless Steel (1.4301) |
| Disc Material | 304 Stainless Steel + Stellite facing (optional) |
| Spring Material | Inconel X-750 (high temperature resistance) |
| Design Standard | API 602 / ASME B16.34 (modified) |
| Connection Type | Flanged (RF, RTJ optional) |
| Max Operating Temperature | 450°C (for steam service) |
| Closure Time | |
| Leakage Rate | Zero leakage (Class VI per FCI 70-2) |
Why Choose Our Direct-Acting Steam Check Valve?
- Enhanced System Safety – The quick-closing action prevents reverse flow that could damage pumps, turbines, or heat exchangers in offshore steam systems.
- Anti-Water Hammer Protection – The unique damping design reduces pressure surges by up to 80%, protecting piping supports and fittings.
- Durability in Harsh Environments – 304 stainless steel resists pitting and crevice corrosion from seawater ingress and steam condensate.
- Cost-Effective Operation – No external actuation needed; minimal pressure drop ensures energy savings.
- Customizable Options – Available with different flange ratings (ASME 150/300, DIN PN40), additional coatings (PTFE, electroless nickel), or higher pressure ratings.
Company Strength & Trust
Shanghai Zhibang Valve Manufacture Co., Ltd (established 2016) has built a solid reputation in the valve industry with an annual export value of US$1–1.5 million. Our products are shipped through major Chinese ports (Shanghai, Guangzhou, Hong Kong, Beijing) and reach clients in over 15 global regions including North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East. We hold ISO9001 certification and maintain strict quality control from raw material inspection to final pressure testing.
This Direct-Acting Steam Check Valve is backed by our commitment to reliability: every unit undergoes hydrostatic testing at 1.5x the rated pressure, seat leakage testing, and a spring-set verification. Our experienced engineering team can also provide technical support for custom applications (e.g., high-temperature steam, vertical or horizontal installation).
Contact us today for a quote or sample. We are ready to support your offshore platform projects with proven valve solutions that deliver safety, durability, and performance.
Frequently Asked Questions (FAQ)
-
Q: What is the main difference between a direct-acting check valve and a swing check valve?
A: A direct-acting check valve uses a spring-loaded disc that closes immediately when flow stops, while a swing check relies on gravity. Our direct-acting design provides faster closure and better anti-water hammer performance. -
Q: Can this valve be used for saturated steam as well as superheated steam?
A: Yes. The 304 stainless steel body and Inconel spring are suitable for both saturated steam (up to 450°C) and superheated steam. However, for steam above 450°C, we recommend consulting our engineers for material upgrades. -
Q: Is the valve suitable for vertical installation?
A: Absolutely. The spring-assisted closure works effectively in any orientation. We provide installation guidelines to ensure optimal performance in vertical or horizontal pipelines. -
Q: What flange standards are compatible?
A: Standard flanges are ASME B16.5 Class 150/300 and DIN 2633/2635 PN40. Other standards (e.g., JIS, GOST) are available upon request. -
Q: How do you ensure anti-water hammer performance?
A: The disc has a special damping profile and the spring rate is precisely calculated. Combined with a short closing stroke, the valve dissipates pressure surges before they become damaging. Field tests show reduction of water hammer peak pressure by over 70%. -
Q: What is the lead time?
A: For standard DN80 PN4.0MPa models, lead time is typically 15–25 working days. Custom orders may require 30–40 days. We also offer expedited shipping for urgent projects. -
Q: Do you provide spare parts or maintenance kits?
A: Yes, we supply renewal kits including springs, discs, and gaskets. We also offer technical documentation for easy field maintenance. -
Q: Does the valve require periodic testing?
A: We recommend annual inspection of the spring tension and seat condition. In high-cycling systems, more frequent checks are advisable. Our support team can advise on a maintenance schedule based on your operating conditions.
Send Inquiry to This Supplier
1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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