초록 ▼

A compact, regulated gas flow control valve includes a valve body having a clamp for securement to a high pressure gas cylinder. An inlet at one end receives the high pressure gas from the cylinder. A piston-actuated regulator drops the high pressure to a low pressure, maintaining the low pressure a

A compact, regulated gas flow control valve includes a valve body having a clamp for securement to a high pressure gas cylinder. An inlet at one end receives the high pressure gas from the cylinder. A piston-actuated regulator drops the high pressure to a low pressure, maintaining the low pressure at a substantially constant delivery value. An outlet and a flow control selector knob are located at the other end of the valve body. The knob selects a preselected flow rate for delivery of the low pressure gas by the outlet. The knob controls position of a rotor carrying a plurality or precalibrated flow control orifice inserts, the knob being rotatable but with positive detenting for orienting the rotor to permit flow only through a selected one of the orifice inserts for delivery by said outlet. The sequence of orifice inserts defines a preselected schedule of different flow rates upon rotation of the said selector knob.

대표청구항 ▼

For use with a gas flow control valve including a valve body and a control knob rotatable with respect to the control body for controllably varying the rate of gas flow through said valve, apparatus for limiting rotation of said knob between preselected arcuate limits, comprising a plurality of slot

For use with a gas flow control valve including a valve body and a control knob rotatable with respect to the control body for controllably varying the rate of gas flow through said valve, apparatus for limiting rotation of said knob between preselected arcuate limits, comprising a plurality of slots carried by said knob on the under side of said slots being defined by annular sets of radial inner and outer notches in concentric relationship with there being an annular space between said sets of notches and at least one removable bar for selective placement in such slots for defining preselected limits of rotation of said knob, said bar being configured for bridging said annular space, a stop fixed relative to said valve body for interengagement with said bar for preventing rotation of said knob past the preselected limits, said stop engaging said bar within said annular space.