Fluid pressure-reducing valve with rotary hand wheel having a limited angular travel

摘要

A fluid pressure-reducing unit or pressure-reducing valve allowing the pressure or flow rate of a fluid to be controlled or adjusted, including a main body within which at least one internal fluid passage is made between at least one fluid inlet orifice and at least one fluid outlet orifice, a part for controlling the fluid pressure and/or flow rate being arranged in or on at least part of the internal fluid passage, and at least one operator-operable rotary hand wheel part cooperating with the fluid pressure and/or flow rate control part, in response to the rotary hand wheel part being rotated, so as to control or adjust the pressure and/or the flow rate of the fluid flowing through the internal fluid passage and leaving via the fluid outlet orifice, wherein the rotary hand wheel parts can move in terms of rotation into a number of distinct angular positions, each angular position corresponding to a given fliud pressure or flow rate value, and the rotary hand wheel part having an angular travel less than 340°.