Freeze-resistant metering valve

Details Freeze-resistant metering valve Freeze-resistant metering valve

2009-06-16

2011-12-13

Bastianelli, John (Department: 3753)

Fluid handling

With cleaner, lubrication added to fluid or liquid sealing...

Cleaning or steam sterilizing

C251S129160, C251S129170, C251S335200

Reexamination Certificate

active

08074673

ABSTRACT:
A freeze-resistant metering valve is provided that comprises a magnetic part and a hydraulic part. The magnetic part has an armature biased by a spring. The hydraulic part has an annular space for receiving and conveying a liquid as well as a tappet facing a valve seat. The valve seat comprises a nozzle opening on the side facing away from the tappet. In a currentless state, the tappet blocks the annular space in the direction of an opening (nozzle opening) until a freezing pressure exerted onto the armature generates a sufficient force by virtue of the solidifying liquid. This force is used to counteract the spring force until a freeze expansion space is created by way of a relieving motion.

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