PLUG VALVE MANIFOLD

• US 3,596,680 A
• Filed: 02/24/1969
• Issued: 08/03/1971
• Est. Priority Date: 02/24/1969
• Status: Expired due to Term

• Current Assignee: Donald L. Adams
• Original Assignee: Donald L. Adams
• Inventors: Adams, Donald L.
• Application Number:
  US04/801,450
• Time in Patent Office: 890 Days
• US Class Current: 137/637
• CPC Class Codes: F16K 11/22 with an actuating member for each valve, e.g. interconnected to form multiple-way valves
• CPC Class Codes: G01F 1/34 by measuring pressure or differential pressure
• CPC Class Codes: G01F 1/36 the pressure or differential pressure being created by the use of flow constriction
• CPC Class Codes: G01L 19/0015 using switching means
• CPC Class Codes: Y10T 137/4259 With separate material addition
• CPC Class Codes: Y10T 137/86831 Selective opening of plural ports
• CPC Class Codes: Y10T 137/86871 Plug
• CPC Class Codes: Y10T 137/87096 Valves with separate, correlated, actuators
• CPC Class Codes: Y10T 137/87249 Multiple inlet with multiple outlet
• CPC Class Codes: Y10T 137/87909 Containing rotary valve

Abstract

A manifold connection is provided to connect the pressure taps from either side of an orifice to a pressure transmitter. By the use of two valves and two side ports, which are normally capped, it is possible to connect the pressure taps from the line to the transmitter or to interconnect the transmitter connections for zero calibration or to connect the transmitter to the side ports for connection of a calibrating pressure or to connect the pressure taps to the side ports to blow sediment from the lines. The handles are arranged not to interfere with each other except that the valves must be moved to a certain position in sequence or the handles will interfere with each other. The plugs of the valves are tapered at a smaller conical angle than the cavities in the valve body and the lining is feathered at each end for a good seal.

Claims

1. An improved valve manifold adapted to be placed between a. two fluid pressure taps, the pressure differential between which is to be determined, and b. a transmitter which determines said pressure differential;

c. comprising;

d. a parallelopipedon body having i. opposed high-pressure end and low-pressure end, ii. opposed line face and instrument face, and iii. opposed top and bottom, e. a low-pressure plug having i. a handle extending from above the top of the body, and ii. seated in a low-pressure cavity in the body, f. a high-pressure plug having i. a handle extending from above the top of the body, and ii. seated in a high-pressure cavity in the body, g. said body having the following passageways, i. a low-pressure-line passageway from said low-pressure cavity to said line face adapted to be connected to one of said fluid pressure taps, ii. a low-pressure-instrument passageway from said low-pressure cavity to said instrument face adapted to be connected to said transmitter, iii. a high-pressure-line passageway from said high-pressure cavity to said line face adapted to be connected to the other of said fluid pressure taps, iv. a high-pressure-instrument passageway from said highpressure cavity to said instrument face adapted to be connected to said transmitter, v. a bypass passageway between said low-pressure cavity and said high-pressure cavity vi. an end-low-pressure passageway from one end to said lowpressure cavity, and vii. an end-high-pressure passageway from the other end of said high-pressure cavity; and

h. each plug having three interconnecting ports therein.

2. The invention as defined in claim 1 with the additional limitations of j. each of said body cavities shaped differently than said plug, specifically i. there is small clearance or feather edge between the plug and the body at the top and bottom of the body, ii. larger clearance between the plug and body between the top and bottom, resulting in iii. the cross-sectional space between the plug and the body tapering inwardly at each end, and k. a deformable liner of correlative wedge shape to the cross-sectionAl space between the plug and body.

3. The invention as defined in claim 2 with the additional limitations of m. said small clearance between the top and bottom of the body cavity and the plug being about 0.001 inch.

4. The invention as defined in claim 1 with the additional limitations of j. said handles longer than the distance between plugs and at an angle thereto so that each handle may pass over the other plug.

5. The invention as defined in claim 1 with the additional limitations of j. two of said ports in each plug being diametrically opposed and the third offset by about 60* from one of the others.

6. The invention as defined in claim 5 with the additional limitations of k. each of said body cavities shaped differently than said plug, specifically i. there is a small clearance or feather edge between the plug and the body at the top and bottom of the body, ii. larger clearance between the plug and body between the top and bottom, resulting in iii. the cross-sectional space between the plug and the body tapering inwardly at each end, and m. a deformable liner of correlative shape to the cross-sectional space between the plug and body.

7. The invention as defined in claim 5 with the additional limitations of k. said handles longer than the distance between plugs and at an angle thereto so that each handle may pass over the other plug.

8. The invention as defined in claim 5 with the additional limitations of k. said low-pressure-line passageway and said low-pressure-instrument passageway entering the low-pressure cavity diametrically opposed, and m. said high-pressure-line passageway and said high-pressure-instrument passageway entering the high-pressure cavity diametrically opposed.

9. The invention as defined in claim 8 with the additional limitations of n. said end-high-pressure passageway entering the high-pressure cavity offset about 60* from said high-pressure-instrument passageway;

o. said bypass passageway entering the high-pressure cavity offset about 60* from said high-pressure-instrument passageway and p. aligned with said end high-pressure passageway;

q. said bypass passageway entering the low-pressure cavity offset about 60* from said low-pressure-line passageway.

10. The invention as defined in claim 9 with the additional limitations of s. each of the angles defined above as '"'"''"'"''"'"''"'"'about 60*'"'"''"'"''"'"''"'"' is 62*.