Inward Relief Valve

Specially designed for electronic and electro-optics equipment applications, the Inward Relief Valves have vacuum relief only with settings ranging from 0.5 psid to 5.0 psid pressure. Tamper-proof, these valves do not require field maintenance. Among the eight different models, some valves allow a desiccant cartridge to be fitted to adsorb moist air entering equipment or container packaging. All Two-Way Relief Valves can be set for inward or outward only pressure settings.

M24 Thread Inward Relief Valve 

This panel mounting Inward Relief Valve comes with a back nut and an alochrome thread for R.F Screening Continuity. There is a range of pressure settings available for this relief valve.

M24 Thread Inward Relief Valve (7725)

This large Inward Relief Valve comes in a range of settings. This model can be easily installed with a square drive and is printed with the recommended installation torque figure. This model can also be mounted in a reverse position to act as an Outward Relief Valve. Commonly used on pressure-sensitive equipment such as electronics, containers, and optics, these valves can protect them from vacuum damage due to air transportation or atmospheric changes.

1.5” BSP Thread Inward Relief Valve

One of the most oversized Inward Pressure Relief Valves available, the 1.5” BSP Thread Inward Relief Valve, can also be mounted in reverse positions to act as outward relief valves. Commonly used with our Tank Vent Dryers, the valves give additional protection to prevent blockages. The BSP thread indicates that they can be easily mounted into standard pipe fittings.

1.5” BSP Double Thread Inward Relief Valve (Stainless Steel)

This Inward Relief Valve comes with a large hexagonal head and a double thread – one side is tapered, and the other is parallel, allowing it to be installed in-line or connected to exhaust or intake. This unit can be easily installed with a socket or spanner and can be mounted in a reverse position to act as Outward Relief Valves. Commonly used with our Tank Vent Dryers, the valves give additional protection to prevent blockages. The BSP thread indicates that they can be easily mounted into standard pipe fittings.

1” BSP Thread Inward Relief Valve

One of the largest Inward Pressure Relief Valves available, the 1.5” BSP Thread Inward Relief Valve, can also be mounted in reverse positions to act as Outward Relief Valves. Commonly used with our Tank Vent Dryers, the valves give additional protection to prevent blockages. The BSP thread indicates that they can be easily mounted into standard pipe fittings.

1” BSP Thread Inward Relief Valve (Stainless Steel)

The large hexagonal Inward Pressure Relief Valves come in a range of settings. This unit can be easily installed with a socket or spanner and can be mounted in a reverse position to act as outward relief valves. Commonly used with our tank vent dryers, the valves give additional protection to prevent blockages. The BSP thread indicates that they can be easily mounted into standard pipe fittings.

½” BSP Thread Inward Relief Valve

One of the larger Inward Relief Valves available, this unit can be mounted in reverse positions to act as Outward Relief Valves. Commonly used with our Tank Vent Dryers, the valves give additional protection to prevent blockages. The BSP thread indicates that they can be easily mounted into standard pipe fittings.

Push-Fit Inward Relief Valve

This small push-fit aluminium Inward Relief Valve protects equipment from vacuum damage.

  • Tamper-proof
  • Vacuum relief only with settings ranging from 0.5 psid to 5 psid
  • Equalises the air pressure preventing over or under pressurisation
  • M24 Thread Inward Relief Valve 
  • M24 Thread Inward Relief Valve (7725)
  • 1.5” BSP Thread Inward Relief Valve
  • 1.5” BSP Double Thread Inward Relief Valve (Stainless Steel)
  • 1” BSP Thread Inward Relief Valve
  • 1” BSP Thread Inward Relief Valve (Stainless Steel)
  • ½” BSP Thread Inward Relief Valve
  • Push-Fit Inward Relief Valve

Inward Relief Valve Product Brochure: Download