Patent ID: 8714186

Claim:
A pressure regulator housing assembly comprising: a lower housing and an upper housing; a plunger and diaphragm assembly supported within the lower and upper housings, said plunger movable toward and away from a valve seat, and said diaphragm having a radially inner edge fixed to one end of the plunger and a radially outer edge clamped between an annular surface within said upper housing and a surface of a clamp ring locked against rotation relative to said upper housing thereby isolating said diaphragm from contact with said lower housing; wherein, upon assembly of said upper and lower housings requiring relative rotation therebetween, an upper edge of said lower housing is engaged by a lower surface of said clamp ring; and wherein an outer peripheral surface of said clamp ring is formed with a first plurality of vertically-oriented, tapered teeth and an inner peripheral wall portion of said upper housing adjacent said annular surface is formed with a second plurality of vertically-oriented teeth engageable, on assembly, with said first plurality of vertically-oriented teeth thereby locking said clamp ring against rotation relative to said upper housing.