Ball-type stop cocks having standard matching flanges

• US 4,708,158 A
• Filed: 02/09/1987
• Issued: 11/24/1987
• Est. Priority Date: 04/21/1986
• Status: Expired due to Fees

• Current Assignee: Nippon Air Brake Co., Ltd. (Nabtesco Corporation)
• Original Assignee: Nippon Air Brake Co., Ltd. (Nabtesco Corporation)
• Inventors: Akamatsu, Osamu
• Primary Examiner(s): Walton, George L.
• Application Number:
  US07/012,530
• Time in Patent Office: 288 Days
• Field of Search: 137/315, 251/142, 251/143, 251/145, 251/152, 251/315, 251/316, 251/317, 303/56
• US Class Current: 137/315.19
• CPC Class Codes: F16K 27/067 with spherical plugs
• CPC Class Codes: Y10T 137/6038 Particular valve seat or interface seal

Abstract

This invention relates to a flange-type stop cock having a ball valve plug. This ball-valve stop cock is so constructed as to have the same profile or outline as the flange portion of the existing flange-type stop cock having a conical-shaped valve plug. The flange mounting holes and the input and the output fluid openings are designed to conform with that of existing pipe seat brackets so that the present ball-shaped plug stop cock is a direct replacement for the conical-shaped plug stop cock.

Claims

1. A stop cock adapted to be mounted on an existing standard pipe seat bracket comprising, a flange formed on one side of the stop cock which is fastened to the pipe seat bracket, a first passage and a second passage are formed in the middle of the plane surface of the flange, a first hole which is to be connected to the first passage and a second hole which is to be connected to the second passage are made on the respective front and back sides of the valve body, a through hole is drilled into a ball-shaped valve plug between the first hole and the second hole, the ball-shaped valve plug is situated between the first hole and the second hole to open or close fluid communication therebetween, the valve plug is supported on seat members disposed on the respective sides thereof, a valve plug stem is inserted in and locked to the valve plug, a rotatable handle is fixed to the outer end of the stem, the first and second holes and said through hole forms a communication path which is arranged to align perpendicular to the flange face, one of the first and second holes is situated in the flange side while the other hole is situated on the opposite side of the body from the flange, the second passage which is formed in the bottom-side of the valve body opposite the flange is interconnected through a lower passageway formed in the valve body opposite the handle, said passages and said holes are arranged in the above manner so that an existing stop cock with a cone shape valve plug can be replaced by the present invented stop cock with a ball-shaped valve plug without any modifications to the standard pipe seat bracket.

2. A stop cock, as defined in claim 1, wherein a pair of mounting holes are formed on the respective lobes of the flange, which have center-to-center dimension equal to a pair of mounting holes formed in the bracket.

3. A stop cock, as defined in claim 1, wherein said second passage is located beneath said first passage.

4. A stop cock, as defined in claim 1, wherein said first and second passages terminate in fluid openings which match fluid openings formed in the pipe seat bracket.

5. A stop cock, as defined in claim 4, wherein the fluid openings are disposed in side-by-side relationship with each other.

6. A stop cock, as defined in claim 1, wherein a rotatable handle is connected to the ball-shaped valve plug for opening and closing fluid communication between said first and second holes.