95-125 PSI Factory Preset Regulated, You Can Regulate As You Need Between 35-150 PSI ¼" Compression Unloader Valve ¼" Female NPT Tank Connection With 3 Extra 1/4" NPT Ports 20 Amps Corrosion Resistant and Non Metallic Cover New Replacement Air Compressor Control Switch Valve for Puma 2E21-025T. L4, 4 Ports 95-125 PSI. 95-125 PSI Factory Preset Regulated, You Can Regulate As You Need Between 35-150 PSI. ¼" Compression Unloader Valve. 20 Amps. Corrosion Resistant and Non Metallic Cover.