5pcs One-Way Air Check Valve 1/4" BSPP Female Full Port Check Valve Inline 1/4" BSPP Female Full Ports One Way Air Check Valve Operating Temperature Range: 0-70C Operating Pressure: 0-10kgf/cm 5pcs G 1/4" BSPP Female Full Port One-way Air Check Valve Package included: 5 x Air Check Valve