Patent ID: 6932108

Claim:
A pressure reducer for reducing to a selected value the pressure of water flowing in a water system, comprising: a housing fitting defining an inner chamber and having inlet port means and outlet port means and a partition between said inlet and outlet port means, said partition dividing said inner chamber into an inlet chamber and an outlet chamber, and socket means integral with said housing fitting and communicating with said inlet chamber, said partition defining an aperture aligned with said socket, pressure reducer insert means inserted into said socket and said aperture, said pressure reducer insert means comprising a tapering insert housing having an open wide end and a narrow end, and a regulating diaphragm closing said open wide end to define a controlled pressure chamber, a valve seat and web means for connecting said insert housing with said valve seat, said valve seat being sealingly mounted in said aperture in said partition; passage means for communicating said outlet chamber with said controlled pressure chamber; valve closure means, and valve stem means for connecting said regulating diaphragm and said valve closure means, said valve stem means extending through said valve seat and carrying said valve closure means downstream of said valve seat, said valve closure means and said valve seat cooperating to maintain an outlet pressure in said outlet chamber at said selected value; cap means having an open end with an open end edge and having a substantially closed end, said cap means being retained with its open end edge on said insert housing; said cap means enclosing a biased helical spring, a spring abutment and bias setting threaded spindle means rotatably mounted in said cap means, said spring abutment being guided on said threaded spindle means and being non-rotatably guided in said cap means, said biased helical spring abutting said spring abutment and acting upon said diaphragm to urge said diaphragm, said valve stem means and said valve closure means towards an open position, and setting knob means mounted on said cap means, said setting knob means being axially movable between a first and a second position and being non-rotatably coupled with said cap means, in their first position, and being rotatable relative to said cap means, in their second position; said spindle means being axially movably but non-rotatably guided in said setting knob means; and clip means for axially locking said spindle means to said cap means.