1 1/4 inlet. 2" outlet. The Tecma check valve T PF P30 is a crucial component for RV, trailer, and camper parts and accessories. This check valve helps regulate the flow of water or air in a system, ensuring that the pressure remains within a specified range. With a reputation for quality and durability, this product is designed to maintain the system's functionality efficiently and effectively. Ideal for use in various recreational vehicles, the Tecma check valve T PF P30 provides a reliable solution for managing fluid and gas pressure in a variety of applications.