Camlock type D PP coupler is ordinarily used with a Type A adapter. However, this Type D coupler can be used with a type E or F adapter as well as a DP of matching size. PP couplers are equipped with stainless steel handles, rings and pins to extend life expectancy. Used in many different industries and applications, camlock fittings are very useful when disconnecting or connecting pipe, hose or tubing. These polypropylene cam and groove couplings are stocked in sizes 1/2″-4″, with special sizes obtainable by request.