Parenteral check valve

Details Parenteral check valve Parenteral check valve

1990-01-29

1991-06-25

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

137859, 251368, 604247, F16K 1514

Patent

active

050258290

ABSTRACT:
A check valve, including an inlet housing portion and outlet housing portion which are adapted to be snap-fit together, is inexpensively and quickly produced using valve disks which are capable of providing variable fluid flow resistance. The valve disk is stamped from flexible materials having a Shore A durometer hardness in the range of from about thirty to about one hundred (e.g., a thermoplastic elastomer). Flat, circular shapes having at least three, arcuately-shaped windows defined therein, with an outer sealing periphery being joined to a circular closing member by webs which separate the windows, provide a valve disk of substantial manufacture ease. The check valve is adapted to be used in primary and secondary solution lines, and its variable resistance to fluid flow is enable by merely increasing or decreasing the combined surface area of the windows, increasing or decreasing a preload provided by extending a valve seat in the inlet housing towards the valve disk, increasing or decreasing thicknesses of a valve disk, or varying the proportion of the diameters of the closing member to the valve seat.

REFERENCES:
patent: 2497906 (1950-02-01), Peters
patent: 2758609 (1956-08-01), Dickert
patent: 3176712 (1965-04-01), Ramsden
patent: 3827456 (1974-08-01), Sheppard
patent: 4593720 (1986-06-01), Bergandy
patent: 4712583 (1987-07-01), Pelmulder

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1033248