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Help CenterMarine High Pressure Gate Valve, PN64 Rating, Forged Steel Body, Flanged Connection
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As a leading valve manufacturer with a strong focus on the marine and offshore sectors, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our Marine High Pressure Gate Valve with a PN64 rating. Engineered for the most demanding applications, this forged steel, flanged connection valve is built to withstand the harsh conditions of seawater, high pressure, and constant operation. Since our establishment in 2016, we have dedicated ourselves to producing industrial valves that combine reliability with performance, and this product exemplifies our commitment. It is designed to provide a secure, bubble-tight shut-off for critical piping systems on vessels, offshore platforms, and coastal facilities, ensuring operational safety and efficiency.
Core Features & Technical Advantages:
- Robust Forged Steel Construction: The valve body and major components are forged from high-grade carbon steel or alloy steel (A105, F22, F316, etc.), providing superior mechanical strength, impact resistance, and durability compared to cast equivalents. This forging process eliminates internal defects, ensuring integrity under high-pressure cycling.
- PN64 High-Pressure Design: Rated for PN64 (Class 400), this valve is capable of handling working pressures up to 64 bar, making it suitable for main seawater lines, ballast systems, fuel oil lines, and other high-pressure services onboard ships and offshore installations.
- Flanged Connection for Secure Mounting: Standard flanged ends per ASME B16.5, DIN, or JIS standards ensure a leak-proof, bolted connection to the pipeline. This design facilitates installation, maintenance, and provides excellent stability against pipe stress and vibration.
- Rising Stem Design for Clear Position Indication: The outside screw and yoke (OS&Y) rising stem design provides a visual and tactile indication of the valve's open or closed position, a critical safety feature in marine environments.
- Metal-to-Metal Seating: The wedge and seat are precision-machined from hardened stainless steel or stellite-coated alloys to ensure a tight seal even after prolonged use and in the presence of abrasive media or high temperatures.
- Versatile Actuation Options: While designed for manual operation via a handwheel, the valve can be easily fitted with pneumatic, hydraulic, or electric actuators for remote control, which is essential for automated systems on modern vessels.
- Corrosion Resistance: All external and wetted surfaces receive appropriate coatings or treatments (such as epoxy coating, galvanization, or passivation for stainless steel) to resist corrosion from saltwater, humid air, and other marine elements.
Detailed Specifications:
| Parameter | Specification |
| Design & Manufacturing Standard | API 600, API 6D, BS 1873, GOST 9544 |
| Pressure-Temperature Rating | PN64 (Class 400). Refer to ASME B16.34 for specific temperature-pressure charts. |
| Body Material | Forged Steel A105, F22, F304, F316, F51 Duplex (Customizable) |
| Trim Material (Seat/Wedge/Stem) | 13% Cr Stainless Steel, Stellite 6, 316SS, Monel (Optional) |
| Stem Type | Rising Stem, Outside Screw & Yoke (OS&Y) |
| Seat Type | Metal Seated, Resilient Seated (Optional for lower pressures) |
| End Connection | Flanged: RF, RTJ, FF faces available. Standards: ASME B16.5 Class 150/300, DIN PN10/16/25/40, JIS 10K/20K. |
| Size Range | Nominal Diameter: 1/2" (DN15) to 24" (DN600) and larger upon request. |
| Temperature Range | Standard: -29°C to 425°C. Low-temperature (down to -196°C) and high-temperature (up to 550°C) designs available. |
| Gasket/Packing | Graphite, PTFE, or Flexible Graphite packing for reliable stem sealing. |
Benefits for Your Operations:
- Enhanced System Safety: The robust design and reliable shut-off capability prevent leaks in critical systems, protecting personnel, equipment, and the marine environment.
- Reduced Maintenance & Lifecycle Cost: The forged steel construction and high-quality trim materials offer exceptional wear resistance, leading to longer service intervals and lower total cost of ownership.
- Global Compliance & Interchangeability: Manufactured to international standards (API, ASME, DIN), our valves ensure compatibility with existing global marine infrastructure and simplify spare part procurement.
- Operational Flexibility: Suitable for a wide range of media including seawater, fresh water, fuel oil, lubricating oil, air, and steam, providing a versatile solution for multiple shipboard systems.
Trust in a manufacturer with a proven track record. Shanghai Zhibang's operations are backed by an ISO9001 certified quality management system, ensuring consistent product quality from raw material inspection to final testing. Our annual export value of US$1-1.5 Million reflects the trust placed in us by clients across North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, and beyond. We understand the stringent requirements of the marine industry and ship this critical component from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring timely delivery to your project site. Choose our Marine High Pressure Gate Valve for a combination of strength, reliability, and manufacturer-direct value. Contact us today for a detailed quotation, technical datasheets, or to discuss your specific application requirements.
Frequently Asked Questions (FAQ)
Q1: What is the main advantage of a forged steel body over a cast steel body for a marine gate valve?
A: Forged steel offers superior grain structure, higher density, and better mechanical properties (tensile strength, impact toughness) than cast steel. This makes it more resistant to cracking, especially under high pressure, thermal cycling, and in the corrosive marine environment, leading to enhanced safety and longevity.
Q2: Can this PN64 valve be used for services other than seawater?
A: Absolutely. While designed for marine harsh conditions, its high-pressure rating and material options make it suitable for a variety of industrial fluids onboard, including fuel oil, lube oil, steam, compressed air, and process chemicals, provided the material compatibility is verified.
Q3: Are different flange standards and face types available?
A: Yes. We can supply valves with flanges conforming to ASME B16.5 (RF, RTJ), DIN EN 1092-1 (PN series), JIS B 2220, and other standards. The specific flange type (Raised Face, Ring Type Joint, Flat Face) can be specified at the time of order to match your piping.
Q4: Is the valve suitable for both above-deck and below-deck installations?
A: Yes. With appropriate exterior coatings (epoxy for below deck, weather-resistant finishes for above deck), the valve performs reliably in both environments. The rising stem design is particularly beneficial for easy visual status checks in any location.
Q5: Do you offer actuated versions for automated control systems?
A: We do. The valve is designed to be a ready platform for the addition of pneumatic, hydraulic, or electric actuators. We can provide the complete assembled unit with your chosen actuator, including necessary brackets and controls, as a package.
Q6: What testing is performed on each valve before shipment?
A: Every valve undergoes a rigorous testing protocol, which typically includes a hydrostatic shell test (at 1.5x the rated pressure), a seat leakage test (per API 598 or equivalent), and operational tests for smooth opening/closing. Certified test reports are available upon request.
Q7: What is the typical lead time for an order of these valves?
A: Lead time depends on the size, material, and quantity. For standard sizes and materials in moderate quantities, production can often be completed within 4-8 weeks. We provide accurate lead time estimates with every quotation.
Q8: Can you provide valves with specific material certifications or NDT reports?
A: Yes. Material Traceability (MTC) certificates, Third-Party Inspection (TPI), and Non-Destructive Testing (NDT) reports like UT, PT, or RT are available as optional services to meet the stringent requirements of classification societies or specific project specifications.
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