Dual check valve

Details Dual check valve Dual check valve

E - Fixed Constructions

21

B

E21B 34/06 (2006.01) E21B 34/10 (2006.01) F16K 15/00 (2006.01) F16K 15/03 (2006.01)

Patent

CA 2581622

A check valve comprising a section of a drill string, a flapper valve positioned within and concentric to the section of the drill string, and a piston valve positioned within and concentric to the section of the drill string. The flapper valve allows fluid flow in a first direction through an inner portion of a cross-section of the section of the drill string and not allowing fluid flow in a second direction, and the piston check valve allowing fluid flow in the first direction through an outer portion of the cross-section of the section of the drill string and not allowing fluid flow in the second direction, where the first portion and the second portion of the cross-section of the section of the drill string are mutually exclusive.

Affiliated with

Also associated with

Rating

Dual check 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 Dual check valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual check valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1614506