A P-port check valve that is built into a DCV is called _________.

A P-port check valve that is built into a DCV is called _________.

• A. Multi-purpose DCV
• B. Integrated p-port check valve
• C. Integral p-port check valve
• D. Pressure holding DCV

Answer: (C)

A P-port check valve built into a DCV is described as an integral p-port check valve. The term integral means the check valve is built into the Directional Control Valve body, not added as a separate component in the external piping. The P-port is the DCV’s pressure inlet, so the integral check valve prevents reverse flow back toward the pressure source when pressure in the circuit is higher on the work side or when the valve shifts, helping protect the pump and maintain pressure. This embedded arrangement distinguishes it from a separate external check valve and from other valve types that don’t specifically denote an internal P-port check.

A P-port check valve built into a DCV is described as an integral p-port check valve. The term integral means the check valve is built into the Directional Control Valve body, not added as a separate component in the external piping. The P-port is the DCV’s pressure inlet, so the integral check valve prevents reverse flow back toward the pressure source when pressure in the circuit is higher on the work side or when the valve shifts, helping protect the pump and maintain pressure. This embedded arrangement distinguishes it from a separate external check valve and from other valve types that don’t specifically denote an internal P-port check.