Valves and valve actuation – With correlated flow path – Pipe coupling or union
Patent
1981-10-26
1983-12-06
Schwadron, Martin P.
Valves and valve actuation
With correlated flow path
Pipe coupling or union
251315, F16K 5100
Patent
active
044188870
ABSTRACT:
The plug valve comprises a valve body presenting a cylindrical extension provided with inner angularly equispaced longitudinal cogs. Into the cylindrical extension there is inserted a connector sleeve provided on its outer surface with angularly equispaced longitudinal cogs, so that the connector member can be shifted axially but cannot rotate at the interior of the cylindrical extension. The connector sleeve thus inserted is axially blocked by means of a ring nut which is screwed onto an external threading of the cylindrical extension. The connector sleeve carries at its inner end an annular packing which is caused to adhere in a tight manner against the spherical plug of the valve, while another similar annular packing is housed in the valve body, on the opposite side of the spherical plug. The spherical plug is rotated into its open or closed condition by means of a control stem passing through a transverse bore obtained in the valve body and coupled to the spherical plug by means of a groove and rib coupling.
REFERENCES:
patent: 2360733 (1944-10-01), Smith
patent: 2995336 (1961-08-01), Usab
patent: 3033227 (1962-05-01), Goldman
patent: 3314644 (1967-04-01), Dwyer et al.
patent: 3438387 (1969-04-01), Scaramucci
patent: 3586289 (1971-06-01), Priese
patent: 3765440 (1973-10-01), Grove et al.
patent: 4059250 (1977-11-01), Guldener et al.
patent: 4103865 (1978-08-01), Nanba et al.
patent: 4327895 (1982-05-01), Blumenkranz et al.
Novack Sheri
Schwadron Martin P.
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