US 11,754,212 B2
Connection fitting for a valve coupling and/or test coupling for fluid systems for detecting fluid pressures and for filling, emptying and venting fluid systems
Thomas Wolf, Waldbrunn (DE)
Assigned to Hydrotechnik GmbH, Limburg an der Lahn (DE)
Appl. No. 17/775,328
Filed by Hydrotechnik GmbH, Limburg an der Lahn (DE)
PCT Filed Jan. 28, 2021, PCT No. PCT/EP2021/051957
§ 371(c)(1), (2) Date May 9, 2022,
PCT Pub. No. WO2021/151996, PCT Pub. Date Aug. 5, 2021.
Claims priority of application No. 10 2020 102 277.8 (DE), filed on Jan. 30, 2020.
Prior Publication US 2022/0390050 A1, Dec. 8, 2022
Int. Cl. F16L 29/02 (2006.01); F16L 41/16 (2006.01)
CPC F16L 29/02 (2013.01) [F16L 41/16 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A connection fitting (102) for detecting operating pressures of fluid media, comprising:
an opening pin (114) with a substantially circular, closed contact surface for a spring-loaded and mechanically actuatable non-return valve (32), said valve (32) having a valve body (18) that is supported on a valve seat (52) when in a non-actuated state, said valve (32) being arranged in a drilled hole (10) of a connecting part (16) of a coupling bushing (6) which is under operating pressure,
wherein the opening pin (114) has at least one passage hole (118) which runs laterally to the contact surface and through which a connection between the connection fitting (102) and a valve coupling or measuring coupling (2) for fluid systems can be established;
wherein the connection fitting (102) is configured to be screwed onto a connecting part (16) of the valve coupling or measuring coupling (2),
wherein the valve coupling or measuring coupling (2) comprises a sealing ring (50) that is arranged in a groove (44) of the valve body (18), and
wherein the groove (44) has a trapezoidal cross section that tapers in the radial direction.