Fluid handling – With casing – support – protector or static constructional... – Jacketed
Patent
1980-06-17
1982-09-07
Weakley, Harold W.
Fluid handling
With casing, support, protector or static constructional...
Jacketed
251 86, 251168, 251197, 251363, 251367, F16L 700
Patent
active
043478654
ABSTRACT:
A gate valve has a hollow substantially T-shaped housing having opposed tubular ends through which a pair of coaxial sleeves extend, the sleeves terminating in the interior of the housing in a pair of seats. A gate includes a pair of gate members which are movable in the space between the seats to and from closed positions engaging the seats. The gate members are moved by a structure which first displaces the gates transversely to the common axis of the sleeves until the gates are in a position of alignment with the sleeves, and then while the structure which moves the gates continues to operate, a stop engages the gate members to guide them for movement into engagement with the seats. When engaging the stop the gate members move along the common axis of the sleeves. The sleeves serve to protect the housing from the effects of temperature fluctuations of the fluid flowing through the sleeves. In addition the sleeves can readily be removed and replaced as required. Preferably at least the sleeves and in addition the other components of the valve are made of forged or rolled steel so that the valve does not have any cast steel components which are likely to crack as a result of casting deficiencies or flaws.
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Exxon Research & Engineering Co.
Paris F. Donald
Weakley Harold W.
Wohlers Donald F.
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