Four safety by-pass holes allow air to escape if tip-hole is blocked. By-pass holes do not interfere with normal air flow. Special internal design permits a restricted maximum discharge of 30 psi. Discharges same air volume as full flow blo-guns, while maintaining required noise level and nozzle pressure. Maximum inlet pressure: 150 psi SCFM 5.5 @ 100 PSI 1/4 inch NPT air inlet, nozzle thread 1/2 inch - 27 Zinc alloy body OSHA compliant
