Which device protects intake plumbing from excess pressure in the 5 inch hose system?

Which device protects intake plumbing from excess pressure in the 5 inch hose system?

• A. Piston-Intake-Relief-Valve
• B. Pressure Relief Valve
• C. Check Valve
• D. Shut-off Valve

Answer: (A)

When safeguarding a large-diameter suction line, the device that protects the intake side from too much pressure is the piston intake relief valve. It is specifically designed to sense suction-side pressure and open a bypass when the pressure climbs beyond the set point, letting water vent back toward the source or tank. This keeps the intake plumbing and pump components from being stressed by high pressure during relay pumping or drafting with a 5-inch hose. A general pressure relief valve is typically used on the discharge side or in other parts of the system and doesn’t address intake-specific pressure protection. A check valve only prevents reverse flow, not overpressure, and a shut-off valve simply stops flow.

When safeguarding a large-diameter suction line, the device that protects the intake side from too much pressure is the piston intake relief valve. It is specifically designed to sense suction-side pressure and open a bypass when the pressure climbs beyond the set point, letting water vent back toward the source or tank. This keeps the intake plumbing and pump components from being stressed by high pressure during relay pumping or drafting with a 5-inch hose.

A general pressure relief valve is typically used on the discharge side or in other parts of the system and doesn’t address intake-specific pressure protection. A check valve only prevents reverse flow, not overpressure, and a shut-off valve simply stops flow.