Pressure/Vacuum Relief Valve (PV Valve) · PV Valves & Vent Systems
Parker Hannifin Marine PV Relief DN150 3500mbar is a pressure/vacuum relief valve (pv valve). It is normally installed or arranged in the cargo-tank vent piping on weather deck. Its purpose is to protect cargo tanks against excessive pressure or vacuum and control vapor discharge. The equipment is based on valve seat, pallet or spring mechanism, weather protection and process connection. The exact model designation distinguishes the installed configuration from neighboring variants in the same category; refer to the manufacturer documentation for the exact figure.
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What our service work and the manufacturer documentation say about keeping this model running.
Inspect process connections, seals, valves, actuators, pumps, sensors, piping and supports applicable to the listed cargo equipment. Maintain material compatibility with the actual cargo and clean deposits before they restrict movement or measurement. Trend pressure, temperature, level, flow or operating response against established normal conditions. Function-test remote controls, alarms, shutdowns and emergency stops before cargo operations. Inspect hazardous-area electrical and bonding arrangements for integrity. Refer to the manufacturer documentation for the exact figure for cargo compatibility, calibration, operating limits and wear criteria.
Keep cargo-compatible seals and gaskets, valve service kits, sensors, cable glands, pump or actuator parts and manufacturer-recommended process components. Replacement materials must match the certified cargo service and hazardous-area approval.
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