PF1025 | AquaStar Relief Valve Assembly For PLF27000 and PLF35000 Pipeline Filters

The AquaStar PF1025 Relief Valve Assembly is an essential component for maintaining the safety and operational efficiency of AquaStar Pipeline Filter models PLF27000 and PLF35000. Designed to regulate internal pressure, this relief valve protects against potential damage caused by overpressure conditions within the system. Built with durable, precision-engineered materials, the PF1025 ensures reliable, long-lasting performance under demanding conditions. It is a critical part for maintaining optimal filter operation and preventing costly repairs, with a design that promotes safe filtration practices.

Note: Do not aim air relief valve at electric equipment or pump controls

• Protects Against Overpressure Damage: Regulates internal pressure within pipeline filters to maintain safe and efficient operation

• Engineered for Safety and Reliability: Prevents system failures by consistently managing pressure during filtration cycles

• Durable Precision Construction: Built from robust materials designed to deliver dependable, long-term service

• Critical for Pipeline Filter Protection: Essential for ensuring the longevity and performance of AquaStar filtration systems

• Designed for Easy Maintenance: Provides a dependable and straightforward solution for enhancing overall filter system safety

1. Reinstall the filter Cartridge with the “THIS SIDE UP” showing as it is
placed onto the Filter Core Assembly.
2. Lower the Cartridge and Core Assembly into the filter Housing with
the Automatic Air Release screen located on the Outlet side of the
filter Housing. Try to rotate it. If it turns, keep turning until it drops
into place.
3. Install the Lid Assembly by following the instructions above. Make
sure the Locking Ring is fully closed and locked. Check by attempting
to turn the Locking Ring using the SMALL handles in a counterclockwise direction. The Locking Ring should NOT turn.
4. Reinstall the Drain plug, after making sure the O-ring is clean,
lubricated with silicon-based grease (provided) and in place. (or close
the Drain valve if installed).

5. OPEN THE MANUAL AIR RELIEF VALVE ON TOP OF THE FILTER.
6. Open all isolation valves.
7. Stand away from the filter and then turn on the pump, being sure to
follow the pump manufacturer’s priming and start-up instructions. If
the pump is working and isolations are in the correct position, air will
begin existing the Manual Air Relief Valve on the top of the filter.
8. When a steady stream of water comes out of the Manual Air Relief
Valve, close the valve.
9. Observe the operating filter for leaks, keeping in mind that water from the Manual Air Relief Valve may drip down
the side of filter after passing between the filter Housing and the Locking Ring

• Aquastar Pipeline Filter Models: PLF27000 And PLF35000