Non-return devices for welding installations

Details Non-return devices for welding installations Non-return devices for welding installations

1978-02-15

1979-12-18

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Safety cut-off requiring reset

13751625, F16K 1730

Patent

active

041789580

ABSTRACT:
A non-return device for welding installations, of the kind comprising a movable valve arranged so as to free the passage of gas for the normal supply of the torch from a welding gas generator and, by contrast, to block said passage in the case of a back-pressure resulting from an explosion in the region of the torch burner, the said valve including for this purpose closure means co-operating with a seat under the effect of resilient return means, the valve including second closure means operating inversely to the first in such a manner that the displacement of said valve, under the effect of a sudden fall in pressure downstream of the device and against return means conveniently calibrated to this effect, ensures the automatic cut-off of the flow of gas through the assembly.

REFERENCES:
patent: 1698156 (1929-01-01), Dorsey
patent: 2864400 (1958-12-01), Wiegel
patent: 3709255 (1973-01-01), Ciotti

Affiliated with

Also associated with

Rating

Non-return devices for welding installations does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Non-return devices for welding installations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-return devices for welding installations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-450077