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Help CenterHydraulic Test Bench Piping Zero Leakage Plunger Valve for Laboratory Hydrostatic Testing, 6000 PSI
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Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our Hydraulic Test Bench Piping Zero Leakage Plunger Valve, engineered specifically for laboratory hydrostatic testing at pressures up to 6,000 PSI. Since 2016, we have been a dedicated manufacturer serving global markets, with annual export values exceeding US$1 million and a presence across North America, South America, Europe, Asia, Africa, and Oceania. This valve combines precision engineering, robust construction, and absolute sealing performance to ensure reliable and repeatable test results in demanding lab environments. Our commitment to quality is backed by ISO9001 certification, guaranteeing consistency and traceability from raw material to final product.
This plunger valve is designed to be a critical component in hydraulic test benches, where zero leakage is non-negotiable. It features a unique plunger design that creates a positive seal even under extreme pressure cycles, eliminating any risk of fluid loss during testing. The valve’s body is available in stainless steel or carbon steel, with optional sealing materials including PTFE and metal to suit various test fluids. With a pressure rating of 6,000 PSI and a temperature range of -20°C to +150°C (customizable further), it adapts to a wide array of hydrostatic testing applications. The valve is offered with flanged or threaded connections, and sizes from 1/2" to 2" to match different piping systems.
Key Features & Benefits
- Zero Leakage Performance: Precision-machined plunger and sealing surfaces ensure bubble-tight shut-off, critical for accurate hydrostatic test results.
- High Pressure Capability: Rated for continuous operation at 6,000 PSI, with burst pressure significantly higher, providing a safety margin for demanding labs.
- Durable Construction: Available in stainless steel (316/304) or carbon steel, with hard-coated plunger to resist wear and corrosion from repeated use and aggressive fluids.
- Low Operating Torque: Optimized stem and plunger geometry reduces turning effort, enabling smooth operation even under high pressure.
- Versatile Connection Options: Choose from flanged (ANSI/ASME) or threaded (NPT/BSP) ends to integrate seamlessly into existing test bench piping.
- Customizable: Sealing materials, temperature range, and size can be tailored to your specific test protocol; consult our engineering team for modifications.
- Easy Maintenance: Modular design allows quick replacement of sealing components without removing the valve from the line, minimizing downtime.
Technical Specifications
| Parameter | Value |
| Pressure Rating | 6000 PSI (414 bar) |
| Body Material | Stainless Steel (SS316/SS304) or Carbon Steel (WCB) |
| Sealing Material | PTFE (standard), Reinforced PTFE, Metal (PEEK) – optional |
| Connection Type | Flanged (ANSI 150/300/600) or Threaded (NPT/BSP) |
| Size Range | 1/2" to 2" (DN15 to DN50) |
| Operating Temperature | -20°C to +150°C (customizable up to +250°C) |
| Leakage Rate | Zero (bubble-tight per API 598) |
| Certification | ISO9001:2015 |
Each valve undergoes rigorous hydrostatic testing at 1.5 times the rated pressure before shipment, ensuring that every unit meets our zero-leakage guarantee. The plunger is lapped to a mirror finish and paired with a precision seat to achieve an absolute seal. This design minimizes internal wear and extends service life, even in high-cycle test applications.
Why Choose Shanghai Zhibang Valve?
As a manufacturer with over 8 years of industry experience, we have supplied valves to laboratories, research institutes, and industrial testing facilities worldwide. Our annual export value of US$1 million to US$1.5 million reflects the trust our global customers place in our products. We ship from major ports including Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring timely delivery. Our ISO9001 certified quality management system covers every step from design to after-sales support, giving you confidence in product consistency. We also offer customization services for special connection sizes, sealing materials, and pressure ratings – simply contact our technical team with your requirements.
When you choose our zero-leakage plunger valve, you’re investing in reliable, repeatable test results, reduced fluid waste, and lower maintenance costs. The valve’s robust construction means fewer replacements over time, saving your lab money and downtime. With our global reach and responsive customer service, we are ready to support your hydrostatic testing needs. Request a quote or sample today to experience the difference in quality and performance.
Frequently Asked Questions (FAQ)
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Q: Is this valve suitable for gas testing as well as hydrostatic testing?
A: While primarily designed for liquid (hydrostatic) testing, the valve can be used for low-pressure gas applications with appropriate sealing material selection. For high-pressure gas, we recommend consulting our engineering team to ensure compatibility and safety. -
Q: What is the maximum working pressure for this valve?
A: The rated working pressure is 6,000 PSI (414 bar). The valve is hydrostatically tested at 9,000 PSI (1.5x) to verify integrity. For continuous duty, we recommend staying within the rated pressure. -
Q: Can I get the valve with a different connection type, such as weld ends?
A: Yes, we offer custom connection options including socket weld and butt weld ends upon request. Please specify your needs when placing an order. -
Q: How do you ensure zero leakage over time?
A: The plunger and seat are manufactured with tight tolerances and lapped surfaces. The sealing material (e.g., PTFE) provides a resilient seal. Periodic inspection and replacement of sealing components (typically every 10,000 cycles) will maintain zero leakage performance. -
Q: What fluids can be used with this valve?
A: Standard models are compatible with water, hydraulic oils, and many non-corrosive fluids. For aggressive chemicals or high-temperature fluids, we recommend selecting appropriate body and sealing materials. Contact us for a compatibility chart. -
Q: Do you provide certificates of material and pressure test?
A: Yes, we can provide material test reports (MTR) and hydrostatic test certificates as part of our quality documentation. Please request at the time of order. -
Q: What is the minimum order quantity?
A: Our standard MOQ is 1 piece for sample orders, and 10 pieces for production orders. However, we can accommodate small quantities for laboratory and research clients. Contact us for details. -
Q: How long is the warranty?
A: We offer a 12-month warranty from the date of shipment against manufacturing defects. Extended warranty options are available upon request.
Contact Shanghai Zhibang Valve Manufacture Co., Ltd. today to discuss your laboratory hydrostatic testing requirements. Our team of engineers is ready to provide technical support, custom solutions, and competitive pricing. With our proven track record in global markets, you can rely on us for valves that deliver zero leakage, high pressure, and long service life. Send us an inquiry to get started.
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