Straight Adaptor - Male Taper Thread. A high-quality polymer push in fitting suitable for compressed air applications. The LF3000 fittings can be used in systems with a working pressure from a vacuum of 0.9 bar to a positive pressure of 20 bar. These fittings are suitable for use with all plastic pneumatic plastic tubing and are 100% leak tested during manufacture. The 3175 fittings allow plastic pneumatic tubing to be connected to threaded ports. They can be tightened with a socket wrench or adjusted using an Allen key internally. Features and Benefits. Full bore design Exceptionally low leak rate Available with BSPP and BSPT threads Suitable for Vacuum or pressure applications ISO 14743 compliant Date coded for traceability and reliability Automatically seals in both dynamic and static situations