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Durable Marine Gate Valve For Ship Seawater System In 316L Stainless Steel With PTFE Seal
Product Spotlights
Marine-grade gate valve crafted from corrosion-resistant 316L stainless steel with a reliable PTFE seal, designed for long-lasting performance in demanding ship seawater systems like cooling, ballast, and firefighting. Offers versatile connections, multiple operation types, and is built under ISO 9001 standards for global marine applications.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Material:
Other, 316L Stainless Steel Body and Trim
Application:
Other, Ship Seawater Cooling
Standard:
Other, Manufactured to ISO 9001 quality management system
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Material
Other, 316L Stainless Steel Body and Trim
Application
Other, Ship Seawater Cooling
Standard
Other, Manufactured to ISO 9001 quality management system
Seal Material
PTFE (Polytetrafluoroethylene)
Connection Type
Flanged, Threaded, or Welded Ends
Pressure Rating
Standard ANSI Classes 150 and 300
Temperature Range
Suitable for typical marine service conditions
Operation Type
Manual, Gear Operated, or Actuated
Size Range
Commonly available from 1/2 inch to 12 inches
As a professional manufacturer with years of experience in the marine valve industry, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to present our high-performance Durable Marine Gate Valve. Engineered specifically for the demanding environments of ship seawater systems, this valve is built to deliver reliable shut-off and long service life. Our commitment to quality, backed by our ISO 9001 certification, ensures that every valve meets stringent standards for performance and durability. We understand the critical role these components play in vessel safety and operation, which is why we focus on robust construction and material integrity. With an annual export value reflecting our global reach, we supply trusted valve solutions to shipyards and marine operators worldwide.
This marine gate valve is designed to withstand the corrosive nature of seawater, making it an ideal choice for various onboard systems. Its primary function is to provide a tight seal for isolating sections of piping, crucial for maintenance, repair, and system control.
Key Features and Technical Advantages:
- Superior Corrosion Resistance: The valve body, bonnet, and internal trim are constructed from 316L stainless steel. This low-carbon variant offers enhanced resistance to pitting and crevice corrosion in chloride-rich environments like seawater, significantly outperforming standard 304 stainless steel.
- Reliable PTFE Seal: The seat and stem seal utilize PTFE (Teflon), known for its excellent chemical inertness, low friction, and wide temperature tolerance. This ensures a bubble-tight shut-off, reduces operating torque, and prevents stem leakage over extended periods.
- Robust Design for Marine Service: The valve features a solid wedge or flexible wedge design (depending on model) to prevent binding under system pressure and thermal changes. The stem is designed with a rising or non-rising configuration, with proper backseat features for safe packing replacement under pressure.
- Versatile Operation and Configuration: Available in various configurations to suit different installation and operational needs on a vessel.
| Parameter | Specification / Option |
|---|---|
| Primary Material (Body/Bonnet) | AISI 316L Stainless Steel |
| Seat & Seal Material | PTFE (Standard) |
| Pressure Class (ANSI) | 150, 300 (Other classes available upon request) |
| End Connection | Flanged (RF, RTJ), Threaded (NPT, BSP), Butt Weld |
| Operation Method | Handwheel, Gear Operator, Pneumatic/Hydraulic Actuator |
| Size Range (Nominal Bore) | From 1/2" (DN15) to 12" (DN300) |
| Design Standard | API 600, API 603, BS 1414, DIN Standards |
Benefits for Our Clients:
- Extended Maintenance Intervals: The combination of 316L SS and PTFE minimizes corrosion and wear, leading to fewer replacements and lower lifecycle costs.
- Enhanced System Reliability: A reliable seal prevents unintended seawater ingress or loss, protecting critical machinery like main engine coolers, heat exchangers, and fire pumps.
- Operational Safety: Robust construction and reliable performance contribute to the overall safety of the vessel's piping systems, reducing the risk of failures at sea.
- Global Supply and Support: With major shipment ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure timely delivery to global markets including North America, Europe, Southeast Asia, and beyond.
Our manufacturing expertise, established in 2016, is built on a foundation of precision engineering and quality control. We serve a diverse international clientele across continents, from Eastern Europe to Oceania, demonstrating the universal trust in our marine-grade valve solutions. The durability of this 316L Stainless Steel Gate Valve with PTFE seal translates directly into reduced downtime and operational savings for your fleet. We invite you to contact us for detailed quotations, technical drawings, or to discuss custom requirements for your specific seawater system applications. Partner with Shanghai Zhibang for valves that stand the test of time and tide.
Frequently Asked Questions (FAQ):
-
Q: Why is 316L stainless steel preferred over 304 for seawater valves?
A: Seawater contains high chlorides that can cause pitting and crevice corrosion in 304 stainless steel. 316L, with its added molybdenum content and low carbon, offers significantly better resistance to these forms of corrosion, ensuring a much longer service life in marine environments. -
Q: What are the advantages of using a PTFE seal in this valve?
A: PTFE provides excellent chemical resistance against seawater, has a very low coefficient of friction (reducing operating torque), maintains flexibility across a wide temperature range, and creates a reliable, leak-tight seal that is durable under cyclic operation. -
Q: Can this valve be used for other fluids besides seawater?
A: Yes. While optimized for seawater, its 316L and PTFE construction makes it suitable for a variety of other corrosive media, including certain chemicals, brackish water, and acidic or alkaline solutions within its pressure and temperature ratings. -
Q: What types of actuation can be fitted to this gate valve?
A: The valve can be supplied with a standard handwheel, a gear operator for larger sizes requiring mechanical advantage, or it can be fitted with pneumatic or electric actuators for remote or automated control systems. -
Q: How do I determine the correct pressure class (150 vs. 300) for my application?
A: The pressure class should be selected based on the maximum working pressure and temperature of your specific seawater system. ANSI Class 150 is common for many applications, but Class 300 is required for higher-pressure systems. Our technical team can assist with selection based on your system parameters. -
Q: What documentation and certifications accompany the valves?
A> As a manufacturer operating under an ISO 9001 quality management system, we provide material test certificates (MTCs) for the 316L stainless steel, a detailed inspection report, and a manual. Specific product certifications can be discussed based on project requirements. -
Q: What is your lead time and packaging for export?
A: Lead times vary by size and quantity but are typically competitive. Valves are securely packaged in wooden cases or crates suitable for ocean freight, with all openings sealed to prevent contamination during transit from our ports in Shanghai, Guangzhou, or Hong Kong. -
Q: Do you offer customization for non-standard sizes or specifications?
A: Yes. We have the engineering capability to customize valves for special bore sizes, extended stems for insulated lines, different face-to-face dimensions, or other unique requirements common in shipbuilding and retrofit projects.
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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