Waterway | 550-6730 | Pressure Relief Valve Assembly

How to check pressure gauge for normal operation
Check the operation of your pressure gauge in the following manner:
• The pressure gauge should go to zero (0) when the pump is OFF and the filter Manual Air Relief Valve is OPEN.
• The pressure gauge should indicate pressure when the system is operating properly, EXCEPT when a variable speed pump is operating at a very low speed.
Note: Please refer to the Head Loss Curve chart and notice that a new, clean filter cartridge can handle
approximately 70 gpm with only 1 psi of back-pressure (caused by the filter alone). A pressure gauge reading of zero (0) is not necessarily an indication there is a problem with the gauge or how the system is operating.
This is especially true for pool systems designed to the latest energy efficiency standards that use larger pipe and correctly sized return eyeball fittings. These systems are capable of moving large volumes of water with very little back-pressure on the filter or pump allowing these systems to filter water at very low pump speeds resulting in significantly lower energy costs.
• The pressure gauge should be readable and not damaged.
• Replace the pressure gauge if it isn’t working properly or is damaged