Water Fill Valve, 3/8" Brass Ball Valve, 150 Wsp (150 Psi), 600 Wog ( 600 Psi), Note: Usually Followed By 150 Wsp-wog W= Water O = Oil = G =gas. A Ball Valve Usually has Two Ratings Wsp and Wog "working Steam Pressure" and "water Oil Gas". Pitco Fryer Pe14d