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Home > Industrial Equipment & Components > Valve > Gate Valve > Gear Operated Marine Non-Rising Stem Gate Valve, Flanged Connection DN80-DN200
Gear Operated Marine Non-Rising Stem Gate Valve, Flanged Connection DN80-DN200
Product Spotlights
Designed for demanding marine and offshore environments, this gear-operated gate valve features a non-rising stem for space-saving installation and a flanged connection for secure, leak-proof piping integration. Manufactured under ISO 9001 standards with durable, corrosion-resistant materials, it ensures reliable shut-off, easy operation under high pressure, and a long service life, reducing maintenance costs and enhancing system safety for global maritime and industrial applications.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Application:
Other, Marine
Operation Type:
Gear Operated (Non-Rising Stem)
Connection Type:
Flanged (Standard ANSI/ASME, DIN, JIS, GB)
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Application
Other, Marine
Operation Type
Gear Operated (Non-Rising Stem)
Connection Type
Flanged (Standard ANSI/ASME, DIN, JIS, GB)
Size Range
DN80 to DN200 (NPS 3“ to 8“)
Pressure Rating
PN16, PN25, Class 150, Class 300
Body Material
Cast Steel (WCB), Ductile Iron, Stainless Steel (Optional)
Trim Material
Stainless Steel (13% Cr), Alloy 20, Monel (Customizable)
Seat Design
Metal-to-Metal Sealing
Design Standard
API 600, API 6D, BS 1414, ISO 9001 Manufacturing
Temperature Range
-29°C to 425°C (-20°F to 800°F)
As a leading manufacturer with a strong commitment to quality since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our robust Gear Operated Marine Non-Rising Stem Gate Valve. Engineered specifically for the demanding environments of marine and offshore applications, this valve series from DN80 to DN200 offers reliable, long-lasting flow control where failure is not an option. Our valves are manufactured under stringent ISO 9001 certified processes, ensuring each unit delivers exceptional performance, durability, and safety for critical piping systems on vessels, rigs, and coastal facilities.
This valve is designed to meet the rigorous standards of the global maritime industry. Its core value lies in providing a secure shut-off solution that withstands corrosive seawater, high pressure, and constant vibration. The gear operator allows for manageable actuation even under high differential pressures, making it an essential component for engineers and procurement specialists seeking dependable valve solutions.
Key Features & Technical Advantages:
- Gear Operated Non-Rising Stem Design: The enclosed gearbox mechanism provides significant mechanical advantage, allowing for easier opening and closing against high fluid pressures. The non-rising stem feature is crucial for confined spaces common in ship engine rooms and offshore platforms, as it requires minimal vertical clearance during operation.
- Robust Flanged Connection: Available with standard flanges (ANSI/ASME, DIN, JIS, GB) to ensure a leak-proof, secure, and easy connection to existing piping systems, facilitating straightforward installation and maintenance.
- Superior Sealing & Durability: Features a metal-to-metal seating design (wedge and seat) that provides a tight, bubble-tight seal. The trim materials, such as 13% Chrome stainless steel or other alloys upon request, offer excellent resistance to erosion, corrosion, and galling, extending service life in seawater and other aggressive media.
- Wide Material & Pressure Compatibility: The valve body is typically constructed from high-grade cast steel (WCB) or ductile iron, with options for stainless steel for highly corrosive duties. It is designed to handle a broad spectrum of pressures and temperatures.
Detailed Technical Specifications:
| Parameter | Specification |
|---|---|
| Size Range | DN80, DN100, DN125, DN150, DN200 (NPS 3", 4", 5", 6", 8") |
| Pressure Ratings | PN16, PN25, ANSI Class 150, Class 300 (Other ratings available) |
| Operation | Manual Gear Operator (Bevel Gear or Worm Gear) |
| Stem Type | Non-Rising Stem (OS&Y design optional) |
| Face-to-Face | Manufactured to API 600, ISO 5752 standards |
| Test Standards | Shell Test: 1.5x PN, Seat Test: 1.1x PN per API 598/ISO 5208 |
Benefits for Your Operations:
- Enhanced Safety & Reliability: The robust construction and reliable sealing minimize the risk of leaks and failures in critical systems, protecting personnel, equipment, and the environment.
- Reduced Maintenance & Lifecycle Cost: The durable materials and precision engineering result in lower wear rates, fewer maintenance interventions, and a longer operational lifespan, providing a favorable total cost of ownership.
- Global Compliance & Interchangeability: Designed to meet international standards (API, ISO, BS), our valves ensure compatibility and compliance for global projects, simplifying procurement for shipyards and engineering firms.
- Flexible Customization: We offer customization options for materials, pressure ratings, flange standards, and gearbox ratios to perfectly match your specific project requirements.
Backed by Shanghai Zhibang's decade of manufacturing expertise and an annual export value reaching up to US$1.5 Million, our valves have earned trust across diverse and demanding markets from North America and Europe to Southeast Asia and Africa. This global acceptance is a testament to their consistent performance and quality. Our ISO 9001 certification underpins every step of our production, from raw material sourcing to final testing. When you choose our Gear Operated Marine Gate Valves, you are not just purchasing a component; you are investing in a solution backed by proven reliability, international standards compliance, and a manufacturer with a solid global footprint. Contact us today to discuss how our DN80-DN200 valve series can enhance the safety and efficiency of your marine or industrial fluid systems.
Frequently Asked Questions (FAQ):
-
Q: What is the main advantage of a gear operator on a gate valve?
A: A gear operator provides a high mechanical advantage, significantly reducing the handwheel force required to open or close the valve against high line pressures. This makes operation safer and more manageable, especially for larger valve sizes. -
Q: Why is the non-rising stem design preferred for marine applications?
A: The non-rising stem design is ideal for space-constrained environments like ship engine rooms, bilges, or below-deck areas. Since the stem does not move vertically during operation, it requires minimal overhead clearance, simplifying installation and preventing interference with other equipment. -
Q: Can this valve be used with media other than seawater?
A: Absolutely. While designed for marine corrosion resistance, the valve's material options (cast steel, stainless steel, special alloys) make it suitable for a wide range of industrial fluids, including oil, gas, steam, and various chemicals, depending on the selected trim. -
Q: What flange standards do you offer?
A: We manufacture valves with flanges conforming to major international standards such as ANSI/ASME B16.5, DIN, JIS, and GB. Please specify your required standard when inquiring. -
Q: Is the valve fire-safe?
A: Fire-safe design, compliant with standards like API 607/API 6FA, is available as an optional feature. This includes secondary metal sealing in case the primary soft seal is compromised by fire. -
Q: What is your typical lead time for an order of DN150 valves?
A: Lead times vary based on order quantity, material specifications, and customization. Standard configurations typically have shorter lead times. We provide accurate delivery schedules upon receipt of your detailed inquiry. -
Q: Do you provide documentation like test reports and certificates?
A: Yes, we provide comprehensive documentation, including material certificates, hydrostatic test reports (per API 598), and a certificate of conformity. Our ISO 9001 quality system ensures full traceability. -
Q: How do I determine the correct pressure class (PN16, Class 150, etc.) for my application?
A: The pressure class should be selected based on your system's maximum working pressure and temperature. Our technical team can assist you in selecting the appropriate rating to ensure safe and reliable operation.
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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