Control valve
The invention relates to a regulating valve, which is attachable, in particular in a bore of a hydraulic door closer, executed with a female thread. The regulating valve has a body, adjoined by a regulating area, and a thread provided with an anti-rotation means. The thread with the anti-rotation element can be screwed into the female thread of the bore of the hydraulic door closer. In order to provide a regulating valve with a simple design while excluding unwanted adjustment of the regulating valve during the operation, the anti-rotation means includes a raised area, which can cooperate with the bore or the female thread of the door closer.
1. A regulating valve for a door closer comprising:
a body;
a pocket hole bore disposed along a longitudinal axis of the body opposite a head area;
an extension torsion-resistantly attached in the pocket hole bore;
a regulating area, constructed as a single piece, adjoining the body having a shank prolongation with an end;
a circumferential collar connected to the shank prolongation via the extension;
a thread arranged on the body, the thread having a planar surface; and
anti-rotation means provided for the thread that comprise a raised area of the circumferential collar,
wherein the circumferential collar corresponds to lateral surfaces of a groove that is disposed as a recess formed in the planar surface.
2. The regulating valve according to claim 1 , wherein the body presents the groove at which the raised area is disposed.
3. The regulating valve according to claim 1 , wherein the body comprises a shank, the raised area projects beyond a diameter of the shank.
4. The regulating valve according to claim 1 , wherein the raised area is disposed at the thread and projects beyond a diameter of the thread.
5. The regulating valve according to claim 3 , wherein the thread is disposed at the shank.
6. The regulating valve according to claim 1 , wherein the pocket hole bore has one of an angular cross-section and a non-circular cross-section.
7. The regulating valve according to claim 1 , wherein the extension has a neck that projects into a further bore of the body.
8. The regulating valve according to claim 5 , wherein the raised area is disposed at the thread.
9. The regulating valve according to claim 7 , wherein the regulating area has an end that faces away from the body and is formed as a taper.
10. The regulating valve according to claim 1 , wherein the regulating area is attached to the body by injection molding.
11. The regulating valve according to claim 1 , wherein at least one of the body and the regulating area comprise a plastic material.
12. The regulating valve according to claim 1 , wherein the body is color coded.
13. A door closer comprising:
a supply channel;
a drainage channel;
a bore having a cone-shaped valve seat; and
a regulating valve received in the bore, the regulating valve comprising:
a body;
a pocket hole bore disposed along a longitudinal axis of the body opposite a head area;
an extension torsion-resistantly attached in the pocket hole bore;
a regulating area, constructed as a single piece, adjoining the body having a shank prolongation with an end;
a circumferential collar connected to the shank prolongation via the extension;
a thread arranged on the body, the thread having a planar surface; and
anti-rotation means provided for the thread that comprise a raised area of the circumferential collar,
wherein the circumferential collar corresponds to lateral surfaces of a groove that is disposed as a recess formed in an area of the planar surface, and
wherein a fluid can be conducted through the supply channel along the valve seat to the drainage channel.
14. The regulating valve according to claim 13 , wherein the raised area presents a radius which, when the regulating valve is screwed into a thread of the bore of the door closer, whereby an easy initial screwing torque for the mechanic is provided.
15. The regulating valve according to claim 9 , wherein the end that faces away from the body is cone-shaped.
16. The regulating valve according to claim 11 , wherein the plastic material is a fiber reinforced plastic material.
17. The regulating valve according to claim 1 , wherein the planar surface is parallel to a longitudinal axis of the regulating valve.
18. The regulating valve according to claim 13 , wherein the planar surface is parallel to a longitudinal axis of the regulating valve.
19. The regulating valve according to claim 1 , wherein the circumferential collar connected to the shank prolongation via the extension is constructed as a single piece.
20. The regulating valve according to claim 13 , wherein the circumferential collar connected to the shank prolongation via the extension is constructed as a single piece.