Relief Valves

Protect Pipelines and Tanks from Overpressure with Industrial Relief Valves

Relief valves are safety-critical components in compressed air systems, fluid handling pipelines and storage tanks — designed to open automatically when pressure or vacuum exceeds a set threshold, venting the excess to prevent equipment damage or catastrophic failure.

In tanks and vessels, combined air and vacuum relief valves protect against both overpressure (which can rupture a tank) and vacuum collapse (which can implode a tank during rapid draining).

AIMS Industrial sells relief valves for compressed air, fluid tank and pipeline applications from Dixon and Alemlube — industrial fluid handling and lubrication equipment specialists supplying pipeline, tank and maintenance applications across Australia.

The Relief Valves Range

Our range covers air and vacuum tank vent valves and bronze pressure relief valves for industrial pipeline and tank protection applications.

• Dixon Air & Vacuum Relief Tank Vent Valves (TVPC200 & TVPC300): Dixon’s TVPC series combined air and vacuum relief tank vent valves provide dual-function protection for storage tanks — venting excess positive pressure to prevent over-pressurisation and admitting air to prevent vacuum collapse during rapid product discharge. Available in 2” and 3” body sizes for diesel, water and general liquid storage tanks.
• Dixon Bronze Relief Valve: Dixon’s bronze pressure relief valve provides preset overpressure protection for pipelines and pressure vessels. Bronze construction suits water, compressed air and general industrial fluid applications where corrosion resistance and reliable set-point accuracy are required.
• Alemlube: Alemlube supplies relief valve products for targeted industrial lubrication and fluid circuit protection applications. Alemlube is a well-established Australian industrial equipment brand specialising in fluid handling and lubrication systems.

Choosing the Right Relief Valve

Relief valve selection depends on the pressure medium (air, liquid or combined), the tank or pipeline size, the set pressure and whether vacuum protection is also required.

• Combined Air & Vacuum vs Pressure-Only: Tanks that drain rapidly (fuel tanks, water tanks) need combined air and vacuum relief to prevent both overpressure and vacuum collapse. Pipelines and compressed air systems typically require pressure-only relief valves set above the normal operating pressure.
• Body Size and Flow Capacity: Tank vent valve sizing must match the maximum fill and discharge rate of the tank. Undersized vent valves create excessive backpressure during fast filling or vacuum during rapid draining. Dixon’s TVPC series is available in 2” and 3” to accommodate different tank sizes and flow rates.

Expert Support: Need help buying the right product for your application? Contact our team for application-specific advice or request a quote.

Australian Business, Local Supply: As a proudly Australian business since 1988, we stock locally and work with trusted local Australian manufacturers and distributors to ensure fast, reliable supply.

Also see our check & foot valves, ball valves, fuel tanks, hydraulics and pumps & fluid handling ranges.