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Help CenterHigh Sealing Plunger Valve Marine Fuel Hydraulic Pipeline, 2-Year Warranty, Mill Test Report With Each Unit
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Shanghai Zhibang Valve Manufacture Co., Ltd. is a professional manufacturer established in 2016, dedicated to producing high-quality valves for marine and industrial applications. Our High Sealing Plunger Valve is specifically designed for marine fuel hydraulic pipelines, ensuring reliable shut-off and flow control even under extreme pressure and corrosive conditions. With a 2-year warranty and a Mill Test Report (MTR) provided with every unit, you can trust the integrity and traceability of each valve. This product combines robust construction, precision engineering, and stringent quality control to deliver exceptional performance in demanding marine environments.
Below is a detailed overview of the product features, technical specifications, and benefits that make our plunger valve a preferred choice for shipbuilders, offshore operators, and hydraulic system integrators.
Key Features & Benefits
- High Sealing Performance: The plunger and seat are precision machined and lapped to achieve a metal-to-metal seal that meets API 598 or equivalent standards. This ensures zero leakage (bubble-tight shut-off) for hydraulic fluids, fuel oils, and other media.
- Marine-Grade Materials: Available in stainless steel (SS316, SS304) or carbon steel with anti-corrosion coatings, suitable for seawater, fuel, and hydraulic oil systems.
- 2-Year Warranty: We back our product with a comprehensive warranty covering defects in materials and workmanship, giving you peace of mind for long-term operation.
- Mill Test Report Included: Each valve comes with a certified MTR that documents material composition, mechanical properties, pressure test results, and dimensional checks. This ensures full traceability and compliance with project specifications.
- Durable Design: The valve body is forged or cast with thick walls to withstand high pressure and thermal cycling. The plunger is hardened and ground to resist wear and galling.
- Easy Maintenance: The valve can be serviced inline without removing from the pipeline. The seat and packing are replaceable, reducing downtime and maintenance costs.
- Flexible End Connections: Available with flanged, threaded, or butt-weld ends per ANSI, DIN, JIS, or GB standards. Custom configurations upon request.
Technical Specifications
| Parameter | Value |
| Nominal Size (DN) | 15 – 600 (1/2" – 24") |
| Pressure Rating | PN10 – PN160 / Class 150 – Class 900 |
| Temperature Range | -20°C to +350°C (depending on material) |
| Leakage Rate | Zero leakage (bubble-tight) per API 598 |
| Operating Medium | Fuel oil, hydraulic oil, water, gas, etc. |
| Body Material | WCB, CF8, CF8M, CF3M, etc. |
| Seat/Seal Material | Stellite, PTFE, Graphite (optional) |
| Packing Material | Graphite, PTFE, flexible graphite |
Why Choose Shanghai Zhibang Valve?
As a manufacturer with ISO9001 certification, we enforce strict quality control from raw material inspection to final testing. Our production facility in Shanghai, China, has an annual export value of US$1 million to US$1.5 million, serving markets across North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East. Every valve undergoes hydrostatic and pneumatic pressure tests, and a Mill Test Report is issued for each unit. This commitment to quality and transparency has earned us the trust of shipyards, marine engineering companies, and hydraulic system integrators worldwide.
We also offer customization options such as special trim materials, extended stem lengths, locking devices, and actuator mounting. With a 2-year warranty and responsive after-sales support, we ensure your marine fuel hydraulic pipeline operates safely and efficiently.
Contact us today for a quote or technical consultation. Let us provide you with a reliable valve solution backed by real data and proven performance.
Frequently Asked Questions (FAQ)
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Q: What is the typical delivery time for this plunger valve?
A: For standard sizes and materials, delivery is within 25-35 working days. Custom orders may require 40-60 working days, depending on the specification. -
Q: Can the valve be used for sea water applications?
A: Yes, when ordered with stainless steel body (e.g., CF8M) and appropriate trim, it is suitable for seawater. We recommend a duplex or super duplex stainless steel for high-chloride environments. -
Q: Is the Mill Test Report provided for every valve or only for certain sizes?
A: A Mill Test Report is included with each unit, regardless of size or quantity. It covers material composition, mechanical properties, pressure test results, and dimensional verification. -
Q: What is the maximum working pressure for this valve?
A: Depending on the size and material, the maximum pressure rating can be up to PN160 (Class 900). Please consult our technical datasheet for specific ratings. -
Q: Does the valve require special maintenance?
A: The valve is designed for low maintenance. Periodic inspection of packing and seat is recommended. The plunger and seat can be replaced if necessary. We provide a maintenance manual with each shipment. -
Q: Can you provide a valve with a locking device or limit switch?
A: Yes, we can add a locking handle, padlock, or limit switch box as an optional accessory. Please specify your requirements when ordering. -
Q: Do you have stock for emergency orders?
A: We maintain a limited inventory of popular sizes (DN50-DN200, PN16/PN40) in carbon steel. Contact our sales team for availability. -
Q: What certifications do you have besides ISO9001?
A: We are ISO9001 certified. Additional certifications such as CE, API, or ABS can be arranged upon request for an additional cost and lead time.
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