Patent ID: 9669911
Date: 2017-06-06
CPC Classifications: A62B,B63C,G05D,Y10T

Claim:
1. A first stage pressure regulator comprising: a valve body having an inlet and an outlet and defining a pressure chamber between the inlet and the outlet, the valve body defining a pressure compensation chamber having an opening fluidly communicating the pressure compensation chamber with surrounding water; an inlet tubular union removably received into the inlet; a removable high pressure orifice body defining an orifice therethrough, the orifice body carried by the valve body proximate the inlet, the removable high pressure orifice body having a T-shaped head; a valve seat within the valve body; a valve member slidably carried within the valve body pressure chamber having a valve end, the valve seat being carried by the valve end, the valve member slidable between an open state in which the valve end carrying the valve seat is spaced from the removable high pressure orifice body permitting fluid flow through the orifice between the inlet and outlet and a closed state in which the valve end carrying the valve seat is sealingly seated against the removable high pressure orifice body preventing fluid flow between the inlet and outlet; and wherein the removable high pressure orifice body has an upstream end in the form of a T-shaped head having a larger diameter than a downstream end.