The Camco Propane Double-Stage Auto-Changeover Regulator is for RVs with dual propane tank hookups. It maintains a constant gas pressure and automatically changes from the empty tank to the full one. It allows for the removal of the empty cylinder for refill without interrupting the propane supply. The inlet is a 1/4" SAE inverted flare and the outlet is a 3/8" NPT female. Camco makes quality products for RVing, boating, camping, towing, tailgating, grilling and more. Our products help take your passion for the outdoors to the next level. At heart, Camco is a small company with big aspirations. Since 1966, we have earned a reputation for providing superior goods with high customer approval. At our core, we believe in manufacturing exceptional products and delivering superior service  all while providing a great customer experience. Explore your outdoor passion with Camco. Great memories are only an adventure away. Model#: 59007; Color: Multicolor; Brand: Camco.