Safety valve Aerotec 4101062 — pressure relief valve, 1/4" NPT connection

Aerotec Safety Valve model 4101062 is a mechanical pressure relief valve with a 1/4" NPT threaded connection designed to protect pneumatic and hydraulic systems from overpressure. The valve opens automatically when system pressure exceeds the set threshold, allowing controlled discharge of excess pressure to prevent damage to equipment, pipelines and fittings. Constructed for workshop and industrial environments, it supports continuous operation and simple integration into existing pressurized lines.

Advantages

The safety valve provides automatic pressure relief without electrical power, ensuring fail-safe mechanical operation. Its 1/4" NPT connection enables straightforward installation into standard threaded ports. The valve is built for durability and repeatable actuation, with a design that minimizes maintenance needs and offers consistent opening characteristics under repeated cycles.

Suitable for

• Pressure protection in compressed air systems
• Overpressure relief in hydraulic circuits
• Safety protection for workshop machinery and pneumatic tools
• Use on pressure vessels, tanks and pipeline branches requiring mechanical relief

Key specifications

• Connection type: 1/4" NPT male threaded inlet
• Function: spring-actuated pressure relief (automatic opening)
• Suitable media: compressed air and compatible hydraulic fluids
• Construction: metal body designed for industrial use
• Operating principle: mechanical, no electrical supply required

How to use

Install the valve into an appropriate 1/4" NPT port on the pressure line or vessel, ensuring correct thread engagement and sealing with a suitable thread sealant or tape. Position the discharge outlet so that released fluid or air is directed safely away from personnel and equipment. Set or confirm the relief pressure according to system requirements if the valve includes an adjustable spring; otherwise, verify the valve's rated opening pressure before installation. After installation, perform a functional test by slowly increasing system pressure to the rated relief point and confirming that the valve opens and reseats correctly.

Usage recommendations

Regularly inspect the valve for corrosion, leakage and secure mounting. Keep the discharge area clear and provide downstream drainage or ventilation as needed. Replace the valve if actuation becomes inconsistent or if external damage is visible. Use only with media compatible with the valve's materials and within the manufacturer’s recommended temperature and pressure ranges.