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Help CenterVertical Lift Check Valve for Hydraulic Station Oil Return Line SS316 1" 3000PSI
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Shanghai Zhibang Valve Manufacture Co., Ltd., an ISO9001-certified manufacturer since 2016, offers a premium Vertical Lift Check Valve for Hydraulic Station Oil Return Line crafted from full SS316 stainless steel. Designed to withstand 3000 PSI pressure, this 1-inch valve ensures reliable, leak-free operation in demanding hydraulic systems. Our expertise in valve manufacturing and global export experience (US$1M–US$1.5M annually) guarantees that every valve meets rigorous quality standards, providing you with a durable solution for oil return circuits.
This vertical lift check valve functions by allowing fluid to flow in one direction while automatically closing to prevent backflow, thanks to a spring-assisted disc mechanism. The SS316 construction offers superior corrosion resistance against hydraulic oils, water, and mild chemicals, making it ideal for industrial hydraulic stations, machine tools, and automation systems. With a compact vertical design, it minimizes space requirements and ensures smooth, quiet operation even under high-frequency cycling.
Key Features & Technical Specifications
- Material: Full SS316 (body, disc, spring) – excellent resistance to oxidation and pitting.
- Pressure Rating: 3000 PSI (206 bar) – suitable for high-pressure hydraulic circuits.
- Size: 1 inch (DN25) with threaded ends (NPT or BSPT, customizable).
- Temperature Range: -20°C to +200°C (higher temperatures available upon request).
- Flow Direction: Vertical lift – low pressure drop and minimal turbulence.
- Sealing: Metal-to-metal or optional soft seal (PTFE) for bubble-tight shut-off.
- Standards: Manufactured under ISO9001 quality management system; compliant with API 602 and ASME B16.34.
| Parameter | Specification |
| Valve Type | Vertical Lift Check Valve |
| Body Material | SS316 (CF8M) |
| Disc Material | SS316 |
| Spring Material | SS316 / Inconel (optional) |
| Connection | 1" NPT Female Thread |
| Working Pressure | 3000 PSI @ 100°F |
| Testing Pressure | 4500 PSI (hydrostatic) |
| Applicable Medium | Hydraulic oil, water, gas, chemicals |
Customer Benefits
- Reliable Backflow Prevention: The vertical lift design ensures positive sealing even at low flow rates, protecting pumps and actuators from reverse flow damage.
- Long Service Life: SS316 construction resists corrosion from hydraulic fluids and environmental factors, reducing maintenance and replacement costs.
- Space-Saving Design: Compact vertical profile fits neatly into tight hydraulic station layouts, allowing easier installation and piping.
- Versatile Compatibility: Threaded ends (NPT or BSPT) suit most standard hydraulic fittings, and the valve can be used in oil return lines, lubrication systems, and water circuits.
- Customizable Options: Available with different spring forces, seat materials (PTFE, PEEK), and connection types (flanged, welded) to meet specific application needs.
- High Pressure Capability: Rated for 3000 PSI continuous operation, this valve handles the most demanding hydraulic systems without failure.
Shanghai Zhibang Valve Manufacture Co., Ltd. has been dedicated to valve innovation since 2016. We hold ISO9001 certification and maintain rigorous quality control throughout production. Our annual export value of US$1M–US$1.5M reflects our commitment to serving global clients across North America, Europe, Asia, and beyond. Each valve is individually tested before shipment, and we offer a 12-month warranty against manufacturing defects. With shipping ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure timely delivery worldwide. Choose Zhibang for dependable, high-performance check valves that keep your hydraulic systems running smoothly.
Frequently Asked Questions
A: Yes, the SS316 construction makes it compatible with water, most oils, gases, and mild chemicals. For aggressive fluids, please consult our technical team for material compatibility.
A: The standard spring provides a cracking pressure of approximately 0.5–1.0 PSI (0.03–0.07 bar). Custom spring options are available for higher or lower cracking pressures.
A: This is a vertical lift check valve designed for vertical installation (flow upward). Horizontal installation may affect sealing performance; for horizontal use, we recommend our swing check valve series.
A: The standard version has metal-to-metal sealing. An optional PTFE or PEEK seat insert can be provided for bubble-tight shut-off at no additional cost for small quantities.
A: By default, we supply NPT threads. BSPT or other thread types are available upon request. Please specify your requirement when ordering.
A: Use appropriate thread sealant (e.g., PTFE tape) on male threads; avoid over-tightening that could deform the valve body. Ensure the flow direction arrow matches the installation.
A: We provide a 12-month warranty from the date of shipment against defects in material and workmanship. Extended warranty options are available for bulk orders.
A: Yes, sample orders are welcome. We can ship 1–2 pieces for evaluation, with the sample cost deducted from your first bulk order.
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