Usage Tips:[High Flow Pool Filter Pressure Gauge]Our 98209803 high flow manual pool filter pressure gauge is designed for air safety valves and is compatible with Warrior, EasyClean Belowground, FNS, FNS Plus, SMBW 2000 and 4000 series, and spa DE filters . It also works with Clean and Clear filters (ccp100, ccp320, ccp420, ccp520), Quad DE 60, 80 and 100 and all filters. [MATERIAL]Our high flow manual exhaust valve is made of sturdy and plastic material for long-term use. You don't have to worry about deformation or breakage. In addition, the valve is also equipped with two anti-slip rubber O-rings and waterproof tape inside for more stable performance. [Perfect Compatibility]This 98209800 high flow manual bleed valve is compatible with 188592, 188593, 188594, 160316, 160317, 160318, 160301, 160332, 011555, 147411, 180007, 180008, 18, 18-0009 filters can be easily replace. [Easy to Install and Use]This high flow manual safety valve is easy to install and can be screwed into the filter without any tools. Simply tighten the gauge plug, slide the rubber O-ring over the threaded end, and insert the valve into the filter in the correct location. During use, simply turn the exhaust valve hear the sound of air being exhausted from the filter. When the water spurts out, return the valve to its original position. Colour: Black material: plastic Package Contents: 1*Pool Filter Pressure Gauge 1*Valve 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.