Brand new adjustable pressure relief valve. This relief valve is designed to be installed into the head of a small air compressor (less than 2HP), direct drive air compressor, or tankless air compressor, wherever a variable pressure relief valve is required. A Micrometer type scale allows for an easy and accurate adjustment to any pressure between 0 and 100 PSI. This valve has a solid brass body and internals. It also features a stainless steel poppet with a high-quality fluorocarbon o-ring. This valve is rated to operate in temperatures up to 250° F. The max air flow rating is 6 SCFM at 100 PSI.