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304 Stainless Steel Marine Diaphragm Check Valve, Threaded Ends, PN1.6MPa, DN15-DN50
Product Spotlights
High-quality 304 stainless steel marine diaphragm check valve with threaded ends (DN15-DN50, PN1.6MPa). Corrosion-resistant, easy installation, low maintenance, and leak-proof diaphragm design. ISO9001 certified, suitable for seawater, oil, and gas. Customizable options available. Reliable manufacturer since 2016.
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
Connection Type:
Threaded Ends
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
Connection Type
Threaded Ends
Pressure Rating
PN1.6MPa
Size Range
DN15-DN50
Valve Type
Diaphragm Check Valve
Standards
ISO9001
Temperature Range
-20°C to 150°C
Shanghai Zhibang Valve Manufacture Co., Ltd. has been a trusted manufacturer of high-quality industrial valves since 2016. Our 304 Stainless Steel Marine Diaphragm Check Valve with Threaded Ends, rated at PN1.6MPa and available in DN15 to DN50, is engineered to provide reliable backflow prevention in demanding marine and industrial environments. Precision-crafted from corrosion-resistant 304 stainless steel, this check valve ensures long service life, minimal maintenance, and excellent sealing performance. Whether you are managing a shipboard piping system or an offshore platform, our diaphragm check valve delivers consistent operation under fluctuating pressure conditions.
Key Features & Technical Specifications
- Material: Full 304 stainless steel body and internal components for superior corrosion resistance in saltwater and aggressive fluids.
- Connection Type: Threaded ends (BSP/NPT available) for easy and secure installation without welding.
- Pressure Rating: PN1.6MPa (232 psi) suitable for medium-pressure systems.
- Size Range: DN15 (1/2") to DN50 (2") to fit various pipeline diameters.
- Diaphragm Design: Flexible diaphragm provides bubble-tight shut-off and reduces water hammer effect.
- Temperature Range: -20°C to +150°C, accommodating a wide range of fluid temperatures.
- Applications: Marine water systems, fuel lines, cooling circuits, desalination plants, and general industrial piping.
- Standards: Designed and manufactured under ISO9001 quality management system.
| Parameter | Specification |
|---|---|
| Body Material | 304 Stainless Steel (CF8) |
| Diaphragm Material | EPDM / NBR (optional) |
| Nominal Pressure | PN1.6MPa (16 bar) |
| End Connection | Threaded (BSPT or NPT) |
| Size DN | DN15, DN20, DN25, DN32, DN40, DN50 |
| Working Temperature | -20°C ~ 150°C |
| Applicable Media | Water, seawater, oil, gas, weak acids/bases |
Customer Benefits & Advantages
- Corrosion Resistance: 304 stainless steel withstands marine environments, reducing replacement frequency.
- Easy Installation: Threaded ends simplify mounting into existing piping systems, saving time and labor.
- Low Maintenance: Diaphragm design minimizes moving parts, lowering the risk of mechanical failure.
- Leak-Proof Performance: The flexible diaphragm seals tightly even with solid particles or viscous fluids.
- Compact & Lightweight: Space-saving design ideal for confined shipboard installations.
- Cost-Effective: Competitive pricing without compromising on quality, backed by ISO9001 certified production.
Trust & Reliability – Why Choose Shanghai Zhibang?
Since our establishment in 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. has steadily grown to achieve an annual export value of US$1 million to US$1.5 million. Our products are shipped to major ports including Shanghai, Guangzhou, Hong Kong, and Beijing, and are exported to markets across North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, East Asia, Western Europe, Central America, Northern Europe, Southern Europe, South Asia, and the domestic market. Every valve we produce is manufactured under an ISO9001 certified quality system, ensuring consistent performance and durability. With a dedicated engineering team and strict quality control procedures, we deliver check valves that meet international standards. We invite you to contact us for a quote or technical consultation – let us be your reliable partner in fluid control solutions.
Frequently Asked Questions (FAQ)
-
Q: Can this check valve be used for seawater applications?
A: Yes, the 304 stainless steel body and diaphragm materials are specifically selected for corrosion resistance in marine environments, including seawater. -
Q: What thread standards are available?
A: We offer both BSPT (British Standard Pipe Taper) and NPT (National Pipe Taper) threads; please specify your requirement when ordering. -
Q: What is the maximum operating temperature?
A: The standard design allows working temperatures from -20°C to +150°C. For higher temperatures, consult us for alternative diaphragm materials. -
Q: How does the diaphragm check valve prevent water hammer?
A: The flexible diaphragm closes gently as flow reverses, absorbing shock and reducing pressure surges compared to spring-loaded check valves. -
Q: Do you provide custom sizes or pressure ratings?
A: Yes, customization is available upon request for non-standard dimensions or higher pressure classes (e.g., PN2.5MPa). -
Q: What certifications do your valves hold?
A: Our manufacturing facility is ISO9001 certified. Individual valve certifications (e.g., DNV, GL) can be arranged for specific orders, subject to negotiation. -
Q: What is the typical lead time?
A: For standard sizes (DN15-DN50), lead time is approximately 15–25 working days, depending on quantity and customization level. -
Q: Can the valve be installed vertically or horizontally?
A: Yes, the diaphragm check valve can be installed in any orientation without affecting performance, though horizontal installation is recommended for optimal sealing.
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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