US2298370A - Reducing valve - Google Patents

Description

Oct. 13, 1942. A, c, HAAG 2,298,370"

REDUCING VALVE- Filed June 2, 1941 2 sheets-sheet 1 Inventor Attorney Oct. 13, 1942.

A. c. HAAG REDUCING VALVE Filed June 2, 1941 2 Sheetsj-Sheet- 2 Iuventor A Home Patented Oct. 13, 1942 Q UNITED STATES PATENT OFFICE REDUCING VALVE Albert C. Haag, Oxford, Ohio Application June 2, 1941, Serial No. 396,313

1 Claim.

The present invention relates to new and useful improvements in valves and has for its primary object to provide a valve structure adapted to automatically reduce the pressure of any liquid, air or gas passing through a pipeline in which the valve is connected.

A further object is to provide a reducing valve of simple and practical construction, which is efficient andreliable in performance, relatively inexpensive to manufacture, and otherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure l is a side elevational view.

Figure 2 is a top plan view.

Figure 3 is a vertical sectional View taken substantially on a line 33 of Figure 2.

Figure 4 is a transverse sectional view taken substantially on a line 44 of Figure 1.

Figure 5 is a vertical sectional view taken substantially on a line 55 of Figure 1; and

Figure 6 is a vertical sectional view through the adjustable weight taken substantially on a line 66 of Figure 3.

Referring now to the drawings in detail wherein for the purposes of illustration I have disclosed a preferred embodiment of the invention, the numeral 5 designates a valve cylinder or body which is open at each end and provided at its lower end with a cap 6 and having a cap 1 at its upper end, the caps being secured in position for closing the upper and lower ends of the body by bolts 8. The valve is preferably constructed of cast iron or any non-corrosive material and the interior of the cylindrical body 5 may be provided with a removable sleeve 9.

At one side of the body 5 is an internally threaded intake nipple l while a similar discharge nipple II is provided at a diametrically opposite side of the body for connecting the valve in a pipeline. The intake l0 communicates with an annular passage l2 formed in the walls of the body from which laterally inwardly extending passages l3 extend to the interior of the cylindricalbody for communication with the ports l4 formed in the side walls of a piston [5 which has a working fit in the cylinder, the piston being provided With packing rings I6 to seal the same with the walls of the cylinder. The bottom of the piston is open and is provided with a top H to which a stem 18 is attached, the stem extending upwardly through an opening I9 in the top I and is pivotally connected as at 20 to an intermediate portion of a lever 2|. One end of the lever is pivoted as at 22 on an upstanding post 23 secured to the top I of the valve casing while the upper edge of the lever, at its free edge, is notched as shown at 24 to adjustably secure a hook member 25 in position thereon, the hook member having weights 26 attached thereto.

The discharge nipple H communicates with the bottom portion of the cylinder by means of a vertical passage 21, and an upwardly projecting stop 28 is formed on the inner side of the lower cap 6 to limit the downward movement of the piston in the cylinder so as to prevent closure of the discharge port 21 by the piston. Also formed in the walls of the cylindrical body 5 is a condensation drain passage 29 having a lateral extension 30 at its upper end communicating with the cylinder above the piston and also having a lateral extension 3| at its lower end communicating with the lower portion of the cylinder adapted to drain any condensation which might accumulate in the cylinder above the piston to the lower portion of the cylinder for discharge therefrom.

The stem 18 is provided with sufficient freedom in the opening I!) in the top I to provide a vent for the cylinder above the piston and to prevent the creation of a vacuum therein during the operation of the piston.

In the operation of the device the steam or other matter to be reduced flows into the intake nipple ll) of the valve body and through the passages l2 and I3 of the walls of the cylinder as Well as through the ports I4 of the piston into the latter and passes downwardly therethrough to the discharge passage 21 for the discharge nipple.

Pressure built up in the piston will raise the same and close the ports l4 leading to the intake side of the valve, thus reducing pressure at the discharge end until the piston is again lowered by the weight.

It is believed the details of construction, ad-

piston being closed .upon a predetermined up-- ward movement of the piston by pressure of the Y fluid entering the same, means for counteracting said pressure and a by-pass passage in the body connecting the upper and lower portions of the cylinder to drain condensation from the cylinder above the piston, the upper end of the passage being normally open when the ports of the piston are in communication with the intake port of the cylinder and one end of said passage being at all times closed by the piston.

ALBERT C. HAAG.

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