FLUID FLOW REGULATOR

• US 3,593,742 A
• Filed: 06/24/1969
• Issued: 07/20/1971
• Est. Priority Date: 06/24/1969
• Status: Expired due to Term

• Current Assignee: Julian S. Taylor
• Original Assignee: Julian S. Taylor
• Inventors: Taylor, Julian S.
• Application Number:
  US04/836,123
• Time in Patent Office: 756 Days
• US Class Current: 137/504
• CPC Class Codes: F16K 1/44 Details of seats or valve members of double-seat valves
• CPC Class Codes: G05D 7/0133 within the flow-path
• CPC Class Codes: Y10T 137/5109 Convertible
• CPC Class Codes: Y10T 137/7792 Movable deflector or choke
• CPC Class Codes: Y10T 137/8175 Plural

Abstract

A hollow housing, having inlet and outlet ports, forms a fluid passageway. A piston, loosely received by the inlet end portion of the housing, is coaxially connected with a throttle comprising a poppet-type valve stem which extends through and seats on respective end portions of a cage positioned in the outlet end portion of the housing communicating with the outlet port. A spring, interposed between the piston and the cage, normally urges the throttle toward an open position and equalizes fluid pressure against the throttle at the respective ends of the cage in response to variations in fluid pressure across the piston.

Claims

1. A regulator for controlling fluid flow, comprising:

a housing having an inlet and an outlet forming a flow passageway through the housing;

a piston intersecting the flow passageway and being loosely received by said housing adjacent the inlet for forming a restricted fluid passageway around said piston;

a cage in the housing intersecting a portion of the flow passageway adjacent the housing outlet, said cage having a central opening coaxial with said piston and having a lateral opening providing communication between its central opening and the housing outlet, said cage having valve seats, facing toward said piston, on its wall forming the central opening;

a stem extending through the central opening of said cage and coaxially connected with said piston, said stem having spaced-apart valves thereon respectively seating and unseating on said valve seats for opening and closing the central opening of said cage in response to movement of said piston toward and away from said cage;

a resilient member, interposed between said piston and said cage, normally biasing said piston toward the housing inlet in a valve unseating position; and

, means forming a part of said piston for selectively increasing the flow capacity through said housing a predetermined quantity.

2. The regulator according to claim 1 in which said piston is provided with a head end portion, said piston head end portion having a plurality of orifices providing fluid communication therethrough;

and, a like plurality of plug members removably closing the orifices.

3. The regulator according to claim 1 in which said piston is provided with a diametrically reduced head end portion facing toward the housing inlet, said reduced head end portion having a plurality of radial inwardly extending sockets, said piston head end portion having a plurality of radially spaced apertures, parallel with its axis, extending toward said housing inlet from its cage-directed end surface and intersecting the respective sockets;

and, a like plurality of plug members removably closing the sockets.