Stainless Steel Spring-Loaded Piston Check Valve
The Stainless Steel Spring-Loaded Piston Check Valve is engineered for high-performance backflow prevention in demanding industrial systems. Using a precision-machined piston and corrosion-resistant stainless steel body, this valve ensures reliable one-direction flow control even under high pressure, high temperature, and corrosive service conditions.
Its spring-assisted design provides fast closing response, helping prevent water hammer and protecting pumps, compressors, and sensitive downstream equipment.
Key Features
✔ High-Strength Stainless Steel Construction
Manufactured from SS304 / SS316 / SS316L stainless steel for exceptional durability, corrosion resistance, and long service life—ideal for aggressive fluids and harsh environments.
✔ Spring-Loaded Piston Mechanism
A stainless steel spring pushes the piston closed when pressure drops, ensuring:
Faster closing speed
Reduced water hammer
Excellent sealing performance
Reliable operation at any installation angle
✔ Compact, Non-Slamming Design
Provides smooth, quiet operation with minimal flow restriction. Suitable for systems sensitive to vibration and pressure fluctuations.
✔ Wide Pressure & Temperature Range
Handles high pressures and elevated temperatures found in industrial pipelines, pump discharge lines, and chemical systems.
✔ Easy Installation & Maintenance
Standard threaded or flanged connection options are available. The internal piston assembly is designed for easy cleaning and servicing.
Technical Specifications
| Parameter | Details |
|---|---|
| Valve Type | Spring-Loaded Piston Check Valve |
| Material | SS304 / SS316 / SS316L |
| Size Range | 1/2″ – 4″ (custom sizes available) |
| Connection | Threaded (NPT/BSP) / Flanged |
| Pressure Rating | PN16, PN25, PN40, Class 150/300 |
| Temperature Range | -20°C to +220°C (depends on sealing material) |
| Sealing Materials | PTFE, Viton®, EPDM |
| Flow Direction | One-direction, vertical or horizontal |
| Applications | Water, steam, oil, gas, air, chemicals |
Advantages
Fast-response closing prevents reverse flow and pump damage
Low cracking pressure for efficient system performance
Non-slamming design reduces noise and vibration
High corrosion resistance suitable for chemical applications
Versatile installation in vertical or horizontal pipelines
Long service life with minimal maintenance requirements
Typical Applications
The stainless steel spring-loaded piston check valve is widely used in:
Water treatment and distribution systems
Boiler and steam lines
Chemical processing plants
Food & beverage and pharmaceutical production
Compressed air and gas systems
Oil & fuel transfer pipelines
Industrial pump discharge lines
Why Choose Our Stainless Steel Piston Check Valve?
We manufacture industrial-grade piston check valves using high-precision CNC machining and strict quality control. Each valve is tested for leakage, cracking pressure, and spring performance to ensure stable, reliable operation in critical fluid systems.
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