PEGASUS PressFit (M-Profile) Female Coupler FI x C 28mm x 1 FI x C. Suitable for drinking water, heating, rainwater, compressed air, fire extinguising systems and sanitary water. Easier to work during installation compared with other pipe systems. O-rings incorporate leak detection indicators. Flame-free installation. No torch, no gas, no flux, no system contaminants. 10 year guarantee. Hot and cold water apllications. Maximum working pressure of 16 bar. Maximum operating temperature of 110 degrees celcius (WRAS Approved up to 85 degrees celcius). EPDM O ring.