Cashco 8310HP Pressure Reducing and Regulating Valve Assembly

Cashco 8310HP Pressure Reducing & Regulating Valve Assembly is a differential‑pressure regulator designed for 3-inch piping that maintains a relatively constant pressure differential between the upstream loading pressure (PLoad) and the valve’s downstream outlet pressure (P2), with P2 higher than PLoad in this differential configuration. The 8310HP family is offered in two diaphragm configurations: 8310HP‑1+6, a single‑diaphragm design, and 8310HP‑1+8, a double‑diaphragm arrangement; the latter provides an added barrier to prevent fluid from entering the spring chamber in case of diaphragm failure. This model is described as a double‑seated reducing regulator, incorporating features that support stable differential control and reliability across sizes that include 3" (DN80) and other larger options such as 4" (DN100). Installation and operation literature notes practical setup for differential regulation, including the use of an external sensing line and monitoring of downstream pressure via a gauge, consistent with Cashco’s differential regulator configurations. In industrial service, the 8310HP assembly serves applications requiring precise pressure relationships across a regulator, with documentation highlighting the availability of both single‑ and double‑diaphragm constructions to meet varied service conditions.