Fluid handling – With casing – support – protector or static constructional... – Static constructional installations
Patent
1977-01-12
1977-08-30
Cohan, Alan
Fluid handling
With casing, support, protector or static constructional...
Static constructional installations
137371, 13762547, 137798, 251148, 251287, 285 21, 285DIG16, F16K 1107
Patent
active
040447898
ABSTRACT:
An improved sanitary diversion valve is disclosed which provides a better seal to plastic sanitary pipe, is corrosion resistant, has an improved valve core retention mechanism, and a sealed access to prevent leakage and tampering. A resilient O-ring core retention mechanism maintains the core in close contact with the housing without being susceptible to corrosion. Plastic coupling rings are molded into the inlet and outlet ports of the housing to enable high integrity seals to be formed with plastic sanitary pipe connecting therewith. In addition, a plastic coupling ring is molded around the core shaft port in the housing to enable sealing a plastic sanitary pipe thereto as an access tube to the valve. The resulting improved sanitary diversion valve is easily fabricated, easy to install, provides a high integrity seal with plastic sanitary pipe connecting thereto, is reliable for withstanding corrosion of its moving parts during a long term of operation, and is leakage and tamper proof.
REFERENCES:
patent: 1486707 (1924-03-01), Warner
patent: 1759221 (1930-05-01), Carson
patent: 3038695 (1962-06-01), Wildern
patent: 3111299 (1963-11-01), Miller et al.
patent: 3168280 (1965-02-01), Mueller
patent: 3228654 (1966-01-01), Olliff
patent: 3233865 (1966-02-01), Panzica et al.
patent: 3746034 (1973-07-01), Cosson
Fraklin Research Bulletin, "Effluent Diversion Valve", 1 page.
Cohan Alan
Michalsky Gerald A.
Miller Stanley M.
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