Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1980-07-28
1983-02-15
Cohan, Alan
Fluid handling
Line condition change responsive valves
Direct response valves
13751627, 251364, F16K 1500
Patent
active
043735509
ABSTRACT:
A radially inner portion of a flat annular elastomeric washer is inserted and retained in a frustoconical annular groove formed in a cylindrical valve seat of an inline disc check valve. The groove is positioned and dimensioned so that it grips the washer and holds it in a radially stretched, axially skewed configuration wherein one of the washer's outer peripheral corner edges forms a leading sealing edge of the valve seat. At low back pressures in the valve, a line seal is formed between the leading washer edge and the valve's closure disc. High back pressures cause the disc to rearwardly deflect the protruding radially outer portion of the washer and engage the valve seat itself. Because the installed washer is both radially stretched and axially skewed, forward flow through the valve does not tend to dislodge the washer, and reverse flow around the washer portion within the groove is prevented.
REFERENCES:
patent: 144844 (1873-11-01), Gould et al.
patent: 344620 (1886-06-01), Blount
patent: 631036 (1899-08-01), Crump
patent: 675622 (1901-06-01), Clinton
patent: 1483436 (1924-02-01), Hazard
patent: 1657741 (1928-01-01), Carrey
patent: 1948628 (1934-02-01), Penick et al.
patent: 1968200 (1934-07-01), Greve
patent: 2116408 (1938-05-01), O'Leary, Jr. et al.
patent: 2585773 (1952-02-01), Hartman
patent: 2646071 (1953-07-01), Wagner
patent: 2684080 (1954-07-01), Crowell
patent: 2969951 (1961-01-01), Walton
patent: 2981282 (1961-04-01), Mack
patent: 2982515 (1961-05-01), Rule
patent: 3058486 (1962-10-01), McDermott et al.
patent: 3076417 (1963-02-01), Rhodes et al.
patent: 3335750 (1967-08-01), Kepner
patent: 3710821 (1973-01-01), Turetsky
patent: 4005710 (1977-02-01), Zeddies
Cla-Val Co.
Cohan Alan
Rivell John A.
LandOfFree
Valve having a bias-mounted elastomeric sealing element, and met does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Valve having a bias-mounted elastomeric sealing element, and met, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Valve having a bias-mounted elastomeric sealing element, and met will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1796185