High Flow Pool Filter Pressure Gauge This 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. High Quality Material The high flow manual exhaust valve is made of sturdy plastic material for long-term use. It resists deformation and breakage. The valve includes two anti-slip rubber O-rings and waterproof tape inside for stable performance. Perfect Compatibility This high flow manual bleed valve is compatible with models 188592, 188593, 188594, 160316, 160317, 160318, 160301, 160332, 011555, 147411, 180007, 180008, 18, and 18-0009. It can be easily replaced. Easy to Install and Use This high flow manual safety valve is easy to install and requires no 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, turn the exhaust valve until air is released. When water spurts out, return the valve to its original position. Color: Black Material: Plastic Package Contents: 1 x Pool Filter Pressure Gauge 1 x Valve Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual product. Measurement may vary by +/- 1-3 cm.