Wide Applications: Fit for & CV series pool and spa filter models CV340 CV460 CV580 CL340 CL460 CL580. -Fit for DEL & DEV series D.E. pool and spa filters models DEV48 DEV60 DEL48 DEL60. -Fit for series sand filters models JS60-SM JS100-SM. Replace Part Number part #: for Zodiac R0357200, 4580-003, 17-295-1062, 25357-357-000, R-03572, TLD-101-6000 Clean and Dirty Filter: Pressure range: 0-60 psi, 1/4inch . This air gauge release valve assembly has a twistable bezel to indicate desired pressure of start and clean filter, letting homeowners know it's time to clean the filter. For , make sure the indicator level does not reach high. Clean the filter in time! Easy to Install: Simply unscrews the small plastic connector on the bottom to remove the existing air release assembly. Clean out any dirt or debris. Then screw the relief assembly back. NOTE: Please be sure to release the air pressure Once the air relief assembly is installed. Perfect Replacement: Made of plastic . Its dial is super clear and doesn't fog up, giving you a clear reading. Not easy to crack and designed to withstand rough, frequent and extreme weather, so you can cut back , effort and expenses for your outdoor pool maintenance. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind! Colour:Black Material:plastic Package Contents: 1 x R0357200 Air Gauge Release Valve Assembly Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.