Patent ID: 9631351
Date: 2017-04-25
CPC Classifications: E03D,F16K,G05D

Claim:
1. A retrofit hydraulic valve apparatus for mounting on a hollow upwardly opening stem disposed adjacent a flush control device of a toilet tank inlet comprising: a master pipe device including concentric inner and outer pipes cooperating to form a downwardly opening annulus to receive the stem, the outer pipe formed on its lower extremity with a plurality of flexible fingers having lower extremities to be flexed inwardly and outwardly; the upwardly opening stem formed with screw threads in the form of a spiral configured in a selected pattern having a predetermined number of threads per linear measurement; at least one of the fingers configured on its interior with a rib formed with an inwardly opening notch to receive the threads; a flow control device including a flow control valve mounted on the master pipe for receiving flow from the inner pipe to control flow to the toilet tank; a ring-shaped locking device received over the outer pipe to slide vertically thereon and constructed to be slid downwardly to a locking position pressing the lower extremities of the fingers inwardly to grip the stem; and a keeper device coupled with the flush control device operative to, without actuation of the flush device, maintain the flow control valve closed.