HYDRANT DRAIN VALVE SEAL

• US 3,599,662 A
• Filed: 07/18/1969
• Issued: 08/17/1971
• Est. Priority Date: 07/18/1969
• Status: Expired due to Term

• Current Assignee: Dashner James William
• Original Assignee: Dashner James William
• Inventors: DASHNER JAMES WILLIAM
• Application Number:
  US04/842,923
• Time in Patent Office: 760 Days
• US Class Current: 137/257
• CPC Class Codes: E03B 9/14 Draining devices for hydrants
• CPC Class Codes: Y10T 137/4707 With relative rotation of tank group and filling head
• CPC Class Codes: Y10T 137/5532 Reciprocating relatively fixed valves
• CPC Class Codes: Y10T 137/86678 Combined disk or plug and gate or piston

Abstract

A sealing arrangement for the drain openings in a hydrant valve seat ring wherein the radial passages leading from these openings through the ring wall area slanted with respect to the ring axis and have their inner ends enlarged to receive hollow resilient sleeves cut on the bias.

Claims

1. In a fire hydrant having a body member defining a cavity with an inlet opening and an outlet opening, a valve seat ring in said cavity between said inlet opening and said outlet opening, a main valve washer cooperating with said seat ring to control fluid flow ;

through said body member, said seat ring having a drain duct extending between inner and outer surfaces thereof, a drain valve member mounted for movement with said main valve member and having a surface portion with an aperture therein covering the inner end of said drain duct for controlling fluid flow to said drain duct, wherein the improvement comprises said drain duct being formed at an angle to a plane of said seat ring and is countersunk at its inner end portion, a projection of said duct passing above the upper edge of said seat ring, and a tubular seal means of resilient material positioned in said countersunk portion of said drain duct and having an end surface in fluidsealing engagement with said surface portion of said drain valve member.

2. The structure according to claim 1, in which an annular insert of low friction material is positioned in said end surface of said sealing means and engages said surface portion of said drain valve member.