Ametek CPF Fittings & Hose are a new line of quick-test pressure fittings for calibration & test applications – designed with an emphasis on safety. Crystal Pressure Fittings (CPF) perform up to 10 000 psi / 1000 bar, and feature a safety weep hole to alert you before you accidently disconnect from a pressurized system.  It can also be used as a bleed point. CPF fittings seals two ways: use fingers for an o-ring seal or use a wrench for a metal to metal cone seal (good to -40°C).