To service your diaphragm pump, you'll need the right parts. This well-stocked repair kit provides you with everything you require to get your Udor Kappa-75 diaphragm pump up and running again. Its contents include three piston diaphragms, one accumulator diaphragm, three diaphragm bolts, three diaphragm washers, six valve assemblies, and a variety of o-rings.