Wide Compatibility: Compatible with above-ground pools, it is designed to work with 1.5" diameter hoses and 2.5" threaded connections. Specially designed for pool pumps with 1.5" hose connectors. This replacement valve fits perfectly into your existing pool filter system and directly replaces worn valves without any additional modifications or adjustments. Easy to install and remove: Say goodbye to hard-to-turn valves with our replacement piston valve. It makes it effortless to turn your pool filter pump on and off. This replacement piston valve allows your pool filter pump to turn on and off smoothly, allowing for easy and effortless control of water flow. Hassle-free replacement: Replace your pump's on/off valve pool filter system without any hassle. With simple installation, you can upgrade your pool pump system without professional help, saving time and money on maintenance costs. Universal Fit: Fits most pool pumps with a 38mm hose for compatibility with a wide range of pool