| Patent Number |
Title Of Patent |
Date Issued |
| 4700746 |
Control valve for high pressure fluids |
October 20, 1987 |
| A control valve for dissipating the energy of a high pressure flowing media, the apparatus comprising a valve body having an internal cavity, an inlet and at least one outlet, the inlet, outlet and cavity being in communication to form a flow path through the body of the valve, a plu |
| 4573660 |
Double disc gate valve |
March 4, 1986 |
| A double disc gate valve of the type wherein discs are provided with wedge means which force the discs against substantially parallel opposed valve seats having at least one spherical surface between a wedge and a valve disc to allow the discs to have more freedom of movement to accommod |
| 4502503 |
Vacuum breaker valve with internally balanced disc |
March 5, 1985 |
| A check valve of the type having a counterweight is provided wherein the counterweight is mounted on a shaft directly above the shaft carrying the valve disc, the counterweight being connected to the shaft carrying the valve disc by gearing. By mounting the counterweight above the valve |
| 4410007 |
Soft seal installation for feed water check valve |
October 18, 1983 |
| A feed water check valve of the swing type is provided with a soft seal backup to the main element to ensure sealing of the valve plug so that no leakage occurs during testing or when full closure is required as in an emergency. |
| 4408636 |
Reheater isolation device and chemical connector |
October 11, 1983 |
| A combination reheater isolation device and chemical connector is provided which is particularly adapted for use on lines leading to and from the reheater in a boiler-turbine plant system wherein the device can be used under normal system working conditions as a normal T-type fitting, wh |
| 4353390 |
Swing check valve with internally balanced disc |
October 12, 1982 |
| A check valve construction is provided which is free of friction imparting elements such as a labyrinth seal or a stuffing box with internal packing having an external mounted counterweight. One embodiment is of the power assist type constructed with convenient means for local daily test |
| 4338961 |
Valve for handling hot caustic alumina solution with provision for grinding |
July 13, 1982 |
| A valve structure is provided which can be opened and closed under operating conditions without any adjustment in conditions existing in the system in which the valve is an element. The valve element can be turned with respect to the seat to provide for proper relation between the valve |
| 4029290 |
In service exercisable tilt disc check valve |
June 14, 1977 |
| An in service exercisable tilt disc check valve is provided having an externally controlled power actuator connected to the valve shaft for moving the valve disc relative to the valve seat. The valve shaft has a radially extending tooth which is received in an elongated sector socket |
| 4007906 |
Main steam isolation valve |
February 15, 1977 |
| Main steam isolation valves are required for both PWR and BWR nuclear steam supply systems. In the event of a main steam line rupture, these valves must prevent gross loss of steam. The pressure drop across the valves is a direct factor in the efficiency of the generating plant. The rate |
