316L Stainless Steel Medium Pressure Check Valves

316L Stainless Steel Medium Pressure Check Valves

SIYelectric SS316 Medium Pressure Check Valves are designed for reliable one-way flow control in ultra-high-pressure hydraulic, gas, and process systems.

With a maximum working pressure of up to 20,000 PSI / approximately 1379 bar, these check valves help prevent reverse flow and protect critical equipment such as pumps, compressors, gauges, pressure transmitters, analyzers, and high-pressure instruments.

Manufactured from 316 stainless steel, the valve body provides strong mechanical performance, corrosion resistance, and durability in demanding operating environments. Different sealing structures, including O-ring sealing type and ball sealing type, can be selected according to the system pressure, medium compatibility, leakage requirement, and maintenance preference.

Key Features

Ultra-High Pressure Rating

Designed for working pressures up to 20,000 PSI, suitable for high-pressure tubing systems, hydraulic circuits, gas control lines, pressure testing equipment, and demanding process applications.

316 Stainless Steel Construction

The SS316 body offers good corrosion resistance, fatigue resistance, and mechanical strength for harsh industrial environments and aggressive media.

Two Sealing Options

O-Ring Sealing Type
Provides reliable sealing performance, low leakage, and smooth operation. Suitable when the sealing material is compatible with the process medium and temperature.

Ball Sealing Type
Uses a robust ball sealing structure for durable operation and long service life. It is suitable for applications where simple structure, high durability, and repeated operation are important.

Compact Inline Design

The inline valve body is easy to integrate into high-pressure tubing or piping systems where installation space is limited.

Reliable Backflow Prevention

Provides one-way flow protection to prevent reverse flow and help protect pumps, compressors, gauges, transmitters, test equipment, and sensitive high-pressure components.

Typical Applications

Ultra-High-Pressure Hydraulic Systems

Used in hydraulic power units, high-pressure control circuits, pressurization systems, and hydraulic test equipment where reverse flow must be prevented.

Gas Compression and Control Systems

Suitable for gas compression lines, gas distribution systems, purge lines, calibration gas systems, and high-pressure gas control equipment.

Chemical Injection and Process Equipment

Applied in chemical injection skids, dosing systems, process control equipment, and high-pressure fluid lines where controlled flow direction is required.

Pressure Testing and Burst Test Systems

Used in hydrostatic test benches, burst test systems, pressure calibration equipment, and laboratory high-pressure test loops.

Oil & Gas and Energy Industries

Suitable for oilfield equipment, injection lines, wellhead-related systems, pressure control panels, and energy industry process applications.

Advantages

• 20,000 PSI / 1379 bar working pressure rating for ultra-high-pressure applications.
• SS316 stainless steel construction provides corrosion resistance, strength, and durability.
• Reliable non-return function helps prevent reverse flow and protect critical equipment.
• O-ring and ball sealing options allow selection according to leakage, durability, medium, and maintenance requirements.
• Compact inline structure supports installation in high-pressure tubing and process systems.
• Suitable for hydraulic, gas, chemical injection, pressure testing, oil & gas, and process control applications.
• Precision-machined valve components help support stable sealing and dependable long-term performance.

Technical Specifications