US 12,442,162 B2
Hydrant valve system, and hydrant having such a system
Sascha Wenger, Oensingen (CH)
Assigned to VONROLL INFRATEC (INVESTMENT) AG, Emmenbrucke (SE)
Appl. No. 18/269,608
Filed by VONROLL INFRATEC (INVESTMENT) AG, Emmenbrucke (CH)
PCT Filed Dec. 22, 2021, PCT No. PCT/EP2021/087418
§ 371(c)(1), (2) Date Jun. 26, 2023,
PCT Pub. No. WO2022/144287, PCT Pub. Date Jul. 7, 2022.
Claims priority of application No. 20217662 (EP), filed on Dec. 29, 2020.
Prior Publication US 2024/0060279 A1, Feb. 22, 2024
Int. Cl. E03B 9/02 (2006.01)
CPC E03B 9/02 (2013.01) 12 Claims
OG exemplary drawing
 
1. A hydrant valve system (12), comprising:
a hydrant main valve (14) having a main valve body (16) and a valve seat (18), wherein the main valve body (16) is axially adjustable in relation to the valve seat (18),
a housing (19) defining a clearance volume (20) into which the main valve body (16) is adjustable, and
a sealing body (24) provided in the clearance volume (20), wherein the sealing body (24) has a higher density than water,
wherein the housing (19) has an inlet opening (28) adapted to be mounted onto a bottom-side water inlet (22) having a smaller inner diameter than the inner diameter of the housing (19) at the inlet opening (28),
wherein the inner diameter of the housing (19) at the inlet opening (28) is larger than the diameter of the sealing body (24) and wherein the inner diameter of the bottom-side water inlet (22) is smaller than the diameter of the sealing body (24),
wherein the sealing body (24) comprises a rubber material at least at an outer surface of the sealing body (24),
wherein an inner surface of the bottom-side water inlet (22) forms a sealing surface, and
wherein a watertight seal is formed when the sealing body (24) is arranged against the sealing surface.