Air Compressor Safety Relief Valve | 3 to 15 Bar | 1/8" or 1/4" BSP Male Brass

This brass air compressor safety relief valve is sold for releasing air from an air line or tank, helping protect an air receiver, pipework and pneumatic fittings from overpressure. It is offered in nine pressure options from 3 Bar (43PSI) to 15 Bar (215PSI) and with a 1/8" or 1/4" BSP male thread. Features and benefits: - Nine pressure options to choose from: 3, 4, 5, 6, 7, 8, 10, 12 and 15 Bar, so the valve can be matched to the working pressure of the system - Brass body: a suitable material for compressed air lines in workshops and garages - BSP male thread in 1/8" or 1/4": screws straight into a matching female port on a tank, manifold or air line - Hexagon head: a spanner can be used to tighten it into the port - Pressure listed in both Bar and PSI, for example 100PSI (7 Bar) and 171PSI (12 Bar) Applications: - Overpressure protection on air compressor tanks and receivers - Pneumatic lines and manifolds in workshops - Replacing a worn or missing relief valve on small compressors - Air systems built from BSP fittings in schools and maintenance shops Note: Pick a pressure option that suits the lowest pressure rating of any part in the system, and never fit a valve above the rated working pressure of the tank or fittings. The supplier's attribute list also shows a pressure of 850 kPa or more, which differs from the lower Bar options, so confirm the figure for your chosen option before relying on it for protection. Release the pressure before fitting or removing the valve, and replace it if it leaks or sticks. Check the thread size before ordering: 1/8" and 1/4" BSP are not interchangeable.