How To Change a Hayward DE Filter Air Relief Valve

This guide will help you to replace the Air Relief Valve on your Hayward DE Filter.With use, the Air Relief Valve on your Hayward DE Filter may be damaged and no longer function. 

1. ORDER PARTS - Order an Air Relief Valve to have it on hand when you want to replace the damaged one.

2. TURN OFF PUMP - Before you remove the broken Air Relief Valve, make sure you TURN OFF the pool pump.  For maximum safety turn off the power at the circuit breaker to the pump.

3. RELIEVE PRESSURE - Next you will have to relieve the pressure that builds up in the filter during operation. To relieve pressure turn the Air Relief Valve lever on top of the filter counter-clockwise. Water may spray out initially as you see the pressure on the Pressure Gauge go to 0 psi.

4. REMOVE PRESSURE GAUGE - The Pressure Gauge is located on the end of the Air Relief Valve on the Hayward DE Filter. Twist the Gauge off in a counter-clockwise direction. If it does not turn easily, use an open end wrench on the brass nut at the base of the Gauge.

5. VIEW AIR RELIEF ASSEMBLY - The Air Relief Valve is secured with a nut on the underside of the Air Relief Assembly. To remove the Valve from the Assembly you must first remove the Assembly from the tank. The Assembly has "LOCK" and "UNLOCK" labels on top of the tank. To remove the Assembly you will have to rotate the Assembly counter-clockwise from the "LOCK" position to the "UNLOCK" position.

6. REMOVE AIR RELIEF ASSEMBLY - You may have to use a strap clamp to rotate the Air Relief Assembly to its "UNLOCK" position.

7. UNSCREW NUT ADAPTER - Turn the Air Relief Assembly over and remove the Nut Adapter.

8. LIFT OFF AIR RELIEF VALVE - Turn the Air Relief Assembly upright and lift off the Air Relief Valve.

9. INSERT NEW AIR RELIEF VALVE - Lubricate the O-ring on the Air Relief Valve and insert the Valve into the top of the Air Relief Assembly.

10. SECURE NEW AIR RELIEF VALVE - Turn the Air Relief Assembly over and screw the Nut Adapter onto the Air Relief Valve.

11. LUBE FIRST O-RING - There are two O-rings for the Air Relief Assembly; one that fits onto a groove in the top of the tank; and one on the bottom of the Air Relief Assembly. Lubricate the tank O-ring first.

12. LUBE SECOND O-RING - Lubricate the O-ring on the bottom of the Air Relief Assembly.

13. SECURE AIR RELIEF ASSEMBLY - Place the Air Relief Assembly on the top of the tank so that the tab on the Assembly lines up with the "UNLOCK" label on the top of the tank. Then twist the Assembly clockwise 1/4 turn until the tab lines up with the "LOCK" label. You may have to use a strap wrench to twist the Assembly.

14. TAPE PRESSURE GAUGE THREADS - Clean off the threads of the Pressure Gauge and then put 2-3 layers of plumber's Teflon tape on the threads. Wrap the tape in a clockwise direction so it will stay on as you screw the Gauge on.

15. SCREW ON PRESSURE GAUGE - Thread the Pressure Gauge into the Air Relief Valve in a clockwise direction. Use an open end wrench to tighten the last 1/2 turn. Do not over tighten.

16. TURN ON PUMP - Turn ON the power to the pump at the breaker box.

17. CLOSE RELIEF VALVE - When a steady stream of water shoots out of the Air Relief Valve, close the Valve.

18. CHECK READING - Check the pressure reading on the Pressure Gauge. It should read about 10-15 psi.  When the pressure moves up to 10 psi or so higher, it is time to backwash your filter.

If you have any other questions about pool and spa products please do let us know - we are here to help!

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