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Help CenterMarine High Pressure Gate Valve, PN64 Rating, Rising Stem Design, DN15-DN100
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As a dedicated valve manufacturer with a strong presence in the global marine industry, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to present our specialized Marine High Pressure Gate Valve with PN64 Rating. Engineered for the demanding environments of offshore platforms, shipboard piping, and coastal facilities, this valve is built to deliver unwavering performance under extreme pressure. Since our establishment in 2016, we have focused on producing reliable flow control solutions, exporting over $1 million worth of products annually to key markets worldwide. This particular valve series embodies our commitment to durability, safety, and precision engineering for critical marine applications where failure is not an option.
Our Marine High Pressure Gate Valve is designed to provide a tight shut-off in high-pressure fluid systems. The rising stem design (OS&Y) offers a clear visual indication of the valve position—fully open or fully closed—which is a critical safety feature in marine operations. The robust construction ensures it can handle the corrosive effects of seawater, high-pressure steam, fuel oils, and other aggressive media commonly found in ship engineering systems. We utilize advanced manufacturing techniques and rigorous testing protocols to ensure every valve meets the stringent requirements for marine service.
- Superior Pressure Containment: Rated at PN64 (Class 400), this valve is constructed to withstand high-pressure surges and constant high-pressure operation common in main steam lines, boiler feed systems, and high-pressure fuel transfer lines on vessels.
- Corrosion-Resistant Materials: Available in a range of materials including carbon steel with protective coatings, stainless steel (CF8/CF8M), and duplex steel to combat the highly corrosive marine atmosphere and media.
- Reliable Sealing Mechanism: Features a flexible or solid wedge disc that ensures a bubble-tight seal. The metal-to-metal seating provides excellent resistance to erosion and galling, even after numerous cycles.
- Easy Operation and Maintenance: The outside screw and yoke design keeps the threads isolated from the line fluid, preventing corrosion and binding. This allows for smoother operation and easier maintenance, even in harsh conditions.
- Versatile Actuation Options: Can be supplied with a standard handwheel, gear operator for high-torque applications, or fitted with electric, pneumatic, or hydraulic actuators for remote and automated control systems.
- Global Standard Compliance: Manufactured in accordance with international standards such as API, ASME, and ISO, ensuring compatibility and acceptance in shipyards and marine projects across North America, Europe, Asia, and beyond.
For engineers and procurement specialists, the technical specifications are paramount. Below is a summary of key parameters for our standard flanged series:
| Parameter | Specification |
|---|---|
| Size Range (DN) | 15, 20, 25, 32, 40, 50, 65, 80, 100 |
| Size Range (NPS) | 1/2", 3/4", 1", 1 1/4", 1 1/2", 2", 2 1/2", 3", 4" |
| Pressure Rating | PN64 (Class 400) |
| Design Standard | ASME B16.34, API 600/602 |
| Face-to-Face | ASME B16.10 |
| Flange Dimensions | ASME B16.5 (RF/RTJ) |
| Test Standards | API 598 / ISO 5208 |
| Standard Material (Body) | A216 WCB / A351 CF8 / A351 CF8M |
| Stem Material | SS410 / SS304 / SS316 |
The benefits of choosing our valve extend beyond the specifications. For shipbuilders and offshore operators, it means enhanced system safety, reduced downtime due to valve failure, and lower lifecycle costs thanks to durable construction. The clear stem position indicator minimizes operator error. For EPC companies managing marine projects, our valves offer reliable supply from a certified manufacturer, with the flexibility to meet specific material or testing requirements. Our extensive export experience to regions like North America, Southeast Asia, and Europe ensures we understand the documentation and certification needs for smooth logistics.
Our operational credentials speak to our reliability. Shanghai Zhibang Valve Manufacture Co., Ltd. holds ISO 9001 certification for our quality management system, a testament to our consistent manufacturing processes. With an annual export value between US$1 million and US$1.5 million, we have established a trusted supply chain to major marine markets across the globe. We ship efficiently from multiple ports including Shanghai, Guangzhou, and Hong Kong, ensuring timely delivery. When you source this Marine High Pressure Gate Valve from us, you are not just buying a product; you are gaining a partnership with a manufacturer committed to supporting the longevity and safety of your marine assets. Contact us today for a quotation or to discuss your project's specific valve requirements.
Frequently Asked Questions (FAQ)
Q1: What is the primary advantage of a rising stem design in a marine gate valve?
A: The rising stem, or Outside Screw and Yoke (OS&Y) design, provides a clear visual indication of whether the valve is open or closed based on the stem's position. This is a critical safety feature in marine environments, preventing accidental operation and ensuring system isolation during maintenance.
Q2: Can this PN64 valve be used for seawater service?
A: Yes, but material selection is crucial. For seawater applications, we typically recommend valves made from duplex stainless steel (e.g., UNS S31803) or super duplex grades, or carbon steel with suitable internal coatings or linings to resist chloride-induced corrosion and pitting.
Q3: What is the difference between PN64 and Class 400 ratings?
A: PN64 is a metric nominal pressure rating (approximately 64 bar). Class 400 is an imperial pressure class rating (400 psi at a specific temperature). For this valve series, they are designed to be equivalent, meeting the pressure-temperature requirements of both rating systems for interoperability in international projects.
Q4: Do you offer actuators for these valves?
A: Yes. We can provide the valves as manual operation (handwheel or gear) or prepare them for the installation of electric, pneumatic, or hydraulic actuators. Actuator selection depends on the required torque, control mode (on/off or modulating), and available power source on the vessel or platform.
Q5: What testing is performed on these valves before shipment?
A> Each valve undergoes a series of tests including a shell test (applying pressure to the body), a seat leak test (checking sealing performance), and a backseat test (if applicable). Testing is performed in accordance with standards like API 598 or ISO 5208. Certified test reports are available.
Q6: What is the typical delivery lead time for an order?
A: Lead time depends on the order quantity, size, and material specifications. For standard materials and sizes in moderate quantities, the typical production lead time is 4-8 weeks. We recommend contacting our sales team with your specific requirements for an accurate schedule.
Q7: Are these valves suitable for cryogenic service on LNG carriers?
A: The standard temperature range is -29°C to 425°C. For cryogenic applications like LNG (down to -196°C), special design considerations, extended stems, and specific low-temperature materials (like A352 LCB/LCB) are required. We can manufacture valves for cryogenic service upon request.
Q8: Can you provide valves with different flange standards, like JIS or DIN?
A> Absolutely. While ASME B16.5 flanges are standard for our export models, we can manufacture valves with flanges conforming to JIS, DIN, EN, or other international standards to meet the specifications of shipyards and projects in different regions.
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