Feature: 1. Convenient Pointer: With 0 to 60 psi pressure range. This air pressure gauge release valve assembly has a rotating pointer to indicate the pressure needed to initiate and maintain the filter. 2. Easy Installation: Simply unscrew the small plastic connector at the bottom to remove the existing exhaust assembly. Remove any dirt or debris. Then screw in the new exhaust assembly. 3. Sturdy Construction: Made from plastic material, the pressure gauge can withstand harsh, frequent, and extreme weather conditions, reducing outdoor pool maintenance time, effort, and cost. 4. High Accuracy: With a high hardness frame and exhaust assembly component, the pressure gauge relief valve assembly features high sensitivity, high accuracy, not easy to break. 5. Clear Dial: The dial is clear with glaring resistant coating, allowing for easy reading, resistant to fogging, scratch, water, dust, shock, ensuring high durability, can withstand rough, frequent use. Specification: Item Type: Air Gauge Release Valve Assembly Thread: External Thread G3/8 Size: Approx. 13 x 12.4 x 6.3cm / 5.12 x 4.88 x 2.48in Material: Plastic Compatible Model: For R0357200 Application: Suitable for Pool Filter Weight: Approx. 233.00g / 8.22oz. Package List: 1 x Air Gauge Valve Release Assembly Note: 1. For safety, ensure the indicator stays level without reaching too high. Maintain the filter in a timely manner.2. Be sure to release the air pressure after installing the exhaust assembly.