The W1F8 and W4Fl2 series were designed specifically for pressure servicing of military aircraft. The nozzle (socket) and adapter (nipple) are qualified in accordance with Military Specification MIL-N-25677 (USAf) and MIL-A-25676 (USAF) respectively. The W1F8 is the 1/2" series for pressure servicing of the oil tank while the W4F12 is the 3/4" series for overflow return indication. A complete series of pressure caps and dust caps and plugs are available.
Operating Pressure: 500 Psig