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 ▼

In a compact, regulated gas flow control apparatus including a body, an inlet at one end of said body for receiving gas at high pressure from a source thereof, regulator means for dropping the high pressure to a low pressure and maintaining the low pressure at a substantially constant delivery value

In a compact, regulated gas flow control apparatus including a body, an inlet at one end of said body for receiving gas at high pressure from a source thereof, regulator means for dropping the high pressure to a low pressure and maintaining the low pressure at a substantially constant delivery value, said regulator means including a valve seat within said valve body, a valve member for movement relative to said valve body, and a piston movable within said body in response to pressure within said valve body for controlling movement of said valve member to provide regulated delivery of the low pressure gas at a substantially constant delivery value, an outlet, and delivery means for delivery of the low pressure gas by said outlet, the improvement comprising an atmospheric vent and pressure relief means separate from said piston and movable relative to said piston for overpressure venting of gas received from said source to atmosphere if received through said inlet at excessive, said pressure relief means comprising a movable guide within said cavity coaxially surrounding and guiding said valve member, said spring interengaging said guide and piston for urging said piston toward one end of said cavity and for urging said guide toward the other end of said cavity.