The wall plates are attached to the flanges and support arms with locking setscrews fashioned out of stainless steel

For Use With Grainger Item Number: 1ALB9

the cover serves as the drain pan that collects waste water and returns it into the unit for drainage

Pipe or Tube Size - Check Valves: 1/4 in

The looped ends and woven tailband reduce tangling and fraying for better performance

Febco Rubber Parts Kit, For Use With Febco Backflow, 3/4 to 1 in - 905111 Diameter-0.5" The wall plates are attachedRubber Parts Kit; For Use With: 3 4 to 1 in, Febco Backflow; Includes: (1) Each: Diaphragm, (2) Each: RV O Rings, (3) Each: Bushings, Covers, O Rings, RV Seat Disc, RV Seat O Ring, Seat Discs