Marine High Pressure Gate Valve, PN64 Rating, Rising Stem Design, 9 Classification Societies Certified
Product Spotlights
As a leading manufacturer with a strong commitment to maritime safety and reliability since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our Marine High Pressure Gate Valve with PN64 rating and rising stem design. This valve is engineered to meet the rigorous demands of shipboard and offshore applications, where failure is not an option. Our extensive experience in supplying to global markets across North America, Europe, Asia, and beyond has refined our production to deliver valves that combine robust construction with precise performance. With certifications from nine major classification societies, this valve represents a pinnacle of trust and technical compliance for critical marine fluid control systems.
This gate valve is specifically designed for high-pressure service in seawater, ballast, fuel oil, lubricating oil, and other essential ship piping systems. Its rising stem, outside screw and yoke (OS&Y) design provides a clear visual indication of the valve position, a crucial safety feature. The PN64 pressure rating (equivalent to Class 400) ensures it can handle demanding operational pressures found in modern marine engineering.
Key Features and Technical Advantages:
- Superior Sealing Performance: Features a precision-machined wedge and seat arrangement. Options include metal-to-metal seating for high-temperature services or resilient seated designs for bubble-tight shut-off in lower temperature applications, minimizing leakage and ensuring system integrity.
- Robust Construction for Harsh Environments: Manufactured from high-grade materials like carbon steel, stainless steel 316/316L, or duplex stainless steel, selected for excellent corrosion resistance against seawater and marine atmospheres. The body and bonnet are designed with ample wall thickness to withstand high pressure and potential water hammer.
- Easy Operation and Maintenance: The rising stem design keeps the threads outside the valve body, preventing contact with the flow medium and reducing corrosion and wear. This design also allows for easier lubrication and maintenance. A large, ergonomic handwheel or optional gear operator ensures smooth operation even under high differential pressures.
- Universal Compliance and Certification: The valve is certified by nine major international classification societies, including but not limited to ABS, BV, DNV, LR, and RINA. This multi-certification simplifies procurement for shipyards and owners operating vessels under different flags, providing unparalleled flexibility and assurance.
Detailed Technical Specifications:
| Parameter | Specification |
|---|---|
| Design & Manufacturing Standard | ISO 10434, API 600, BS 1414 |
| Face-to-Face Dimension | ASME B16.10, EN 558-1 |
| Flange End Standard | ASME B16.5, EN 1092-1, JIS B2220 |
| Pressure-Temperature Rating | ASME B16.34 |
| Test Standards | API 598, ISO 5208 |
| Fire Safe Design | Optional to API 607/API 6FA standards |
| Stem Packing | Graphite or PTFE based, suitable for high temp |
Benefits for Our Clients: By choosing our PN64 Marine Gate Valve, you secure a component that enhances the safety, reliability, and operational efficiency of your vessel's piping systems. Its certified quality reduces inspection time and costs, while its durable build minimizes downtime and lifecycle costs. The valve's versatile certification supports global fleet operations, making it an ideal choice for new builds and retrofit projects alike.
Backed by our ISO9001 certified quality management system and an annual export value demonstrating our global reach and reliability, you can trust Shanghai Zhibang Valve as a stable and professional partner. Our valves are shipped from major ports including Shanghai, Guangzhou, and Hong Kong, ensuring timely delivery to your project sites worldwide. For a valve solution that meets the highest standards of marine engineering without compromise, contact us today for detailed quotations and technical support. Let us be your valve of choice for navigating the challenges of the sea.
Frequently Asked Questions (FAQ)
-
Q: What is the significance of the PN64 pressure rating?
A: PN64 indicates a nominal pressure rating of 64 bar at ambient temperature. It is a metric standard equivalent to Class 400 in the ASME system, signifying the valve is suitable for high-pressure applications commonly found in marine main lines, booster systems, and other critical services. -
Q: Which nine classification societies certify this valve?
A: While the specific societies can be confirmed upon request, typical certifications include ABS (American Bureau of Shipping), BV (Bureau Veritas), DNV (Det Norske Veritas), LR (Lloyd's Register), RINA, NK (ClassNK), IRS, CCS (China Classification Society), and KR (Korean Register). This broad certification covers most international maritime requirements. -
Q: Can this valve be supplied with actuators?
A: Yes. The valve is designed to be compatible with electric, pneumatic, or hydraulic actuators. The mounting interface can be customized upon request to suit major actuator brands for automated control systems. -
Q: What materials are available for the trim and body?
A: Standard body materials include carbon steel (WCB) and stainless steel (CF8/CF8M). Trim materials (seat, disc, stem) can be specified in various grades like 13% Cr, stainless steel, or Stellite for enhanced wear and corrosion resistance based on the service media. -
Q: Is this valve suitable for cryogenic service?
A: The standard design is for general and high-temperature service. For cryogenic applications (e.g., LNG), specific material selections (like CF8C) and extended bonnet designs are available as a customizable option to prevent stem packing freeze. -
Q: What is the delivery lead time for this product?
A: Lead times vary based on size, material, and order quantity. Standard configurations typically have shorter lead times. We maintain strategic stock for common sizes to expedite delivery, and precise timelines can be provided upon receipt of your detailed inquiry. -
Q: Do you provide documentation with the valve?
A> Yes. Each valve is supplied with a comprehensive documentation package including material certificates, pressure test reports, certification documents from classification societies, and a detailed operation and maintenance manual. -
Q: How does the rising stem design benefit maintenance?
A> The rising stem moves out of the valve body as it opens, keeping the threaded portion clean and accessible. This allows for easier visual position indication, simpler lubrication, and reduced risk of thread corrosion from the flow medium, leading to longer service life and easier field maintenance.
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