Stainless Steel Opening Pressure 0.3 Psi Check Valve

Stainless Steel Opening Pressure 0.3 Psi Check Valve

The SIYelectric Stainless Steel 316 Check Valve with 3/4″ Male G straight thread is designed for reliable backflow prevention in high-pressure liquid and gas systems.

With a maximum working pressure of 430 bar / approximately 6235 PSI and a low cracking pressure of only 0.3 PSI, this check valve allows forward flow to start with minimal pressure loss while preventing reverse flow that could damage pumps, instruments, valves, and other sensitive system components.

Manufactured from 316 stainless steel, the valve provides strong corrosion resistance, good mechanical strength, and long-term durability in demanding industrial environments. The 3/4″ Male G / BSPP straight thread connection supports standardized installation with compatible fittings in hydraulic, gas, chemical, instrumentation, and process systems.

Product Features

High Pressure Capability

Designed for working pressures up to 430 bar, making it suitable for high-pressure hydraulic systems, gas control lines, and demanding industrial fluid applications.

Low Opening Pressure

The valve has a low opening pressure of 0.3 PSI, allowing flow to start easily with minimal pressure drop and improved system response.

316 Stainless Steel Construction

The SS316 body provides excellent resistance to corrosion, chemicals, oxidation, and high-temperature service conditions, depending on actual medium and sealing selection.

3/4″ Male G Straight Thread Connection

The 3/4″ Male G / BSPP thread supports secure installation with compatible straight-thread fittings and standardized piping connections.

Reliable One-Way Flow Protection

Prevents reverse flow and helps protect pumps, gauges, pressure transmitters, instruments, compressors, and sensitive fluid control components.

Typical Applications

High-Pressure Hydraulic Systems

Used in hydraulic circuits, pressure control systems, hydraulic power units, and fluid power equipment where reverse flow prevention is required.

Gas Distribution and Control Lines

Suitable for gas supply systems, gas control panels, purge lines, calibration gas systems, and high-pressure gas distribution applications.

Chemical and Petrochemical Processing

Applied in chemical pipelines, dosing systems, sampling points, injection lines, and petrochemical process equipment where compatible fluids require one-way flow control.

Instrumentation and Pressure Protection Systems

Used with pressure gauges, pressure transmitters, analyzers, test equipment, and instrument panels to prevent backflow and protect measurement devices.

Industrial Fluid Handling Equipment

Suitable for pumps, compressors, process skids, test benches, and general industrial fluid systems requiring reliable non-return protection.

Advantages

• 430 bar / approx. 6235 PSI pressure rating for high-pressure liquid and gas systems.
• 0.3 PSI low cracking pressure helps reduce pressure loss and improve flow response.
• 316 stainless steel construction provides corrosion resistance and long service life.
• 3/4″ Male G / BSPP straight thread supports standardized installation.
• Reliable non-return function prevents backflow and protects critical equipment.
• Compact structure is suitable for hydraulic, gas, instrumentation, and process systems.
• Suitable for pumps, instruments, control panels, testing systems, and industrial fluid equipment.

Technical Specifications