Pressure relief valves

The VHS pressure relief 3-port valve from SMC has been developed to isolate main air supply lines in almost any application where compressed air is used.

When in the exhaust position, the valve design allows it to be securely padlocked to guard against inadvertent air supply. This in turn prevents accidental start-ups that may otherwise occur during cleaning or servicing of equipment.

The simple design and manual operation of the unit ensures that incidents caused by residual pressure in pneumatic lines are also eliminated. The distinctive red colour of the 'supply/exhaust' knob as well as yellow, easily-visible tags inside the status window provide clear indication of the valve's status. There are now five VHS body sizes available with ports, thread sizes and specifications to suit a range of installations across varied manufacturing applications. VHS valves are capable of operating in pressures from 0.1 to 1 MPa and in temperatures of between -5°C and 60°C. With a high exhaust capability, high flow range and its range of safety features, SMC Pneumatics claims the VHS range provides a main air line isolation solution for most manufacturing applications.