Air Compressor Safety Relief Valve | 120PSI | 1/8, 1/4, 3/8, 1/2 BSP Brass

This brass air compressor safety relief valve is a normally closed pressure relief valve rated at 120PSI (8kg), supplied with a male BSP thread in 1/8, 1/4, 3/8 or 1/2 inch sizes. It fits on a compressor tank, pressure vessel or air line as a second line of protection, so the pressure in the system cannot keep building past its set limit. Features and benefits: - 120PSI (8kg) pressure rating - a fixed relief level suited to small oil-free compressors and light-duty air systems - Normally closed design - the valve stays shut in normal running and only opens when pressure rises - Brass body with a plastic cap and a metal pull ring - the ring lets you lift the valve by hand to check that it moves and vents - Four male BSP thread sizes: 1/8, 1/4, 3/8 and 1/2 inch - pick the size that matches the port on your tank or fitting - Colour-coded caps - red bodies on the smaller 1/8 and 1/4 sizes, yellow on the larger 3/8 and 1/2 sizes, so the size is easy to spot at a glance - Compact build - 39.9mm tall on the 1/8 and 1/4 sizes and 54.8mm tall on the 3/8 and 1/2 sizes Applications: - Safety valve on an air compressor tank or manifold - Second-grade overpressure protection on pressure piping - Pressure vessel and receiver fittings in workshops - Replacing a worn or missing relief valve on a small compressor In the box: One air compressor safety relief valve in the size and colour you select. Note: Check that the valve's 120PSI rating is at or below the maximum working pressure of the tank or pipework it protects, and confirm the thread size before fitting. Never block, cap or modify a relief valve. Depressurise the system before fitting or replacing it.