Low friction ball valve

Details Low friction ball valve Low friction ball valve

1992-06-30

1993-03-16

Nilson, Robert G.

Valves and valve actuation

Biased trip

Electrical trip actuation

137554, 251 74, 251163, F16K 3144

Patent

active

051937808

ABSTRACT:
A low friction ball valve used for instance in an automatic shutoff valve system. The valve mechanism includes a spring loaded ball valve normally latched in the open position which is unlatched and hence closes in one version by the contraction of a BioMetal.TM. wire which activates a torsion spring to rotate the ball valve. When the valve is open, the ball inside the valve rests on rollers so that the ball is held slightly away from the seal of the valve located in the valve body. Closing the valve causes the rollers to snap into detents in the ball, and the ball then comes into firm contact with the seal.

REFERENCES:
patent: 1989009 (1935-01-01), Heggem
patent: 2200474 (1940-05-01), Heggem
patent: 3322149 (1967-05-01), Haenky
patent: 4821759 (1989-04-01), Diamond

Affiliated with

Also associated with

Rating

Low friction ball valve does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low friction ball valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low friction ball valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-347682