1Strong Compatibility: The diaphragm pump pressure switch is designed for 42 series pumps, ensuring smooth and stable performance, giving you professional use. 2Premium Material: Made of high grade plastic, oxidation resistant and wear resistant, not easy to crack, suitable for various environments, extending the pressure switch's lifespan. 3Precise Pressure Control: The high precision pressure switch enables automatic on off operations, effectively avoiding overpressure or under pressure situations, ensuring equipment safety. 4Versatile Application: Widely used in toilet sewage pumps and other applications, meeting the needs of different users, enhancing equipment applicability and versatility. 5Easy Installation: Designed for quick and straightforward installation, minimizing downtime and maintenance costs, saving your time and effort without complicated steps. Item Type: Diaphragm Pump Pressure Switch Material: Plastic Fitment: Replacement for 42 Series Pumps 1 x Pressure Switch Set(7PCS)