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| Number | Title | Issue Date |
| 4174557 | Method of mounting valve seats in a butterfly valve A method of mounting valve seats in a butterfly valve comprising a valve body mounted in a valve stem in a valve housing. The valve seats are attached to the valve housing so as to contact the periphery of the valve body when the valve is closed. End surf... | 11/20/1979 |
| 4114856 | Valve seat insert A valve seat insert is disclosed which is useful in a butterfly valve of the type disclosed and claimed in U.S. Pat. No. 3,608,861. In such valves, disc and sealing ring contact pressure is enhanced by fluid pressure in the fluid line regardless of the di... | 09/19/1978 |
| 4082246 | Butterfly valve thruport seal A butterfly valve in which a gasket is secured about the vane periphery and in cooperation with an annular body seat effects a seal for closure of the valve passage. Supporting the gasket in a manner to enable controlled enlargement by a locally applied c... | 04/04/1978 |
| 4036468 | Butterfly valve with self energizing seal An improved butterfly valve with self energizing seal, having a body with parallel faces and a substantially circular opening therethrough, and a shaft transverse to said opening. A closure disc is rigidly attached to said shaft and spaced from said shaft... | 07/19/1977 |
| 4020869 | Combined stop and intercept valve for steam turbines A combined stop and intercept valve is provided for controlling steam flow from a high-pressure steam turbine to a low-pressure steam turbine and comprises a substantially cylindrical casing having two identical butterfly discs fixed to rotatable shafts a... | 05/03/1977 |
| 4015818 | Valve with self-retaining valve seat A valve body has a closing member rotatably mounted in a passage for opening and closing said passage. An annular groove having a substantially dove-tailed cross sectional portion is formed in said valve body for receiving an elastomeric annular seal ring... | 04/05/1977 |
| 4006883 | Adjustable seat for butterfly valves An adjustable seat for butterfly valves wherein an annular groove is provided in the valve body for receiving an annular sealing member against one sidewall thereof for sealingly engaging the valve closure member in the closed position of the valve. A plu... | 02/08/1977 |
| 4005848 | Bidirectional pressure-assisted valve seal Disclosed herein are valve seals wherein an annular seal member is retained in an annular recess in a valve body wall, the seal member being axially flexible. A resilient annular garter spring is provided between the seal member and a converging surface o... | 02/01/1977 |
| 3997142 | Pressure sensitive and temperature responsive rotary valve A rotary valve for providing control of fluid flow throughout a wide range of pressures and temperatures. The valve includes a pressure sensitive and temperature responsive annular yieldable seat that cooperates with the valve's flow control element to es... | 12/14/1976 |
| 3986699 | Positive shut-off seal A positive shut-off seal mechanism for use in pressurized fluid systems subject to high temperatures or fire risk. The seal mechanism includes a metallic valve seat in the form of an annular thin-walled skirt-like lip, preferably formed in a valve seat in... | 10/19/1976 |
| 3974855 | Check valve having self energizing seal An improved check valve having a housing or body with parallel faces and a substantially circular opening therethrough, and a shaft transverse to the opening. A flapper disc is rigidly attached to the shaft. A seat means comprising a metal ring is inserte... | 08/17/1976 |
| 3970253 | Flow area modulator and flow deflector This device is essentially a butterfly type valve which acts as a flow constriction by rotating a disc body with its planar axis parallel to or at right angles to fluid flow through a channel. The disc body has an additional capability of extending sector... | 07/20/1976 |
| 3961769 | Adjustable bearing structure for butterfly gate valves A butterfly gate valve for control of water in treatment, waste water plants and the like, wherein the gate is mounted on a one-piece shaft. The lower end of the shaft rotates in a radial bearing, and a radial bearing and a thrust bearing are provided on ... | 06/08/1976 |
| 3934850 | Adjustable valve seat A valve, such as a butterfly valve, having an adjustable valve seat. The valve includes a valve body having an interior passage and a valve member journalled in the body for movement between positions opening and closing the passage. The body further incl... | 01/27/1976 |
