Thermal check valve

Details Thermal check valve Thermal check valve

1995-09-06

1997-04-15

Chambers, A. Michael

Fluid handling

With heating or cooling of the system

Hot and cold water system having a connection from the hot...

13753327, 13753331, F16K 4900

Patent

active

056200218

ABSTRACT:
A thermal check valve for use in a gravity flow hot water recirculating system. The hot water system has a hot water heating tank, a water faucet, manifold piping from the hot water heating tank to the faucet, return piping from the faucet to the hot water heating tank, and a thermal check valve interposed in the return piping and adjacent a return inlet into the tank. The check valve has a valve body, an inlet chamber formed within the valve body, an inlet port in communication with the inlet chamber, an outlet chamber formed within the valve body, and an outlet port in communication with the outlet chamber, the outlet port being below the inlet port. The valve body includes a valve seat interposed between the inlet and the outlet chambers, and the check valve includes a float within the outlet chamber, the float being vertically movable onto and off of the valve seat so that the float seals the outlet chamber from the inlet chamber when the float rests upon the valve seat, and the float has a specific gravity in the range of 1.05 to 2.0. The float has a vertical bore extending thereinto from above, and a rod extends an adjustable distance into the bore so as to restrict vertical movement of the float off of the valve seat.

REFERENCES:
patent: 840174 (1907-01-01), Tanner
patent: 2194805 (1940-03-01), Moore
patent: 2842155 (1958-07-01), Peters
patent: 2860659 (1958-11-01), Carlson et al.
patent: 3340899 (1967-09-01), Welty et al.
patent: 3428251 (1969-02-01), Gross et al.
patent: 3556124 (1971-01-01), Walton
patent: 3929153 (1975-12-01), Hasty
patent: 3938741 (1976-02-01), Allison
patent: 4191205 (1980-03-01), Nash
patent: 4210284 (1980-07-01), Tarnay et al.
patent: 4410007 (1983-10-01), Karpenko
patent: 4557252 (1985-12-01), Dinh
patent: 4681088 (1987-07-01), Cromer
patent: 5236010 (1993-08-01), George, II et al.
Watts Regulator Co., Hydronic Heating Specialities Brochure, Series 2000 Flow Check Valve 1994.
Watts Regulator Co., Series 2000 Flow Checks Brochure 1994.
Watts Regulator Co., Instructions for Installing Watts No. 2000, 2000S 1994.
Polymer Corp., 5 Things You Should Know About Polymer Corporation's General Purpose Acetal Rod and Plate Machining (1992).

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-354479