Abstract: An apparatus for drying and warming a towel or other articles includes a cabinet having an open top and a bar removably mounted across the top end of the cabinet. A towel to be dried and warmed is draped over the bar and suspended in the cabinet. Heated air, preferably supplied by a standard hair dried is introduced through an opening through the lower end of the cabinet. The open top of the cabinet provides for a bottom-to-top flow path for the heated air supplied to the cabinet. With the towel disposed in the flow path it is thereby heated by the air circulating therethrough by exposing both the inner surface and outer surface of the draped towel to the heated air.

Abstract: A high pressure valve is disclosed having dual, independent seat to closure member seals, the dual seal arrangement including a primary seal and a second seal, each operating independently, in proper sequence, each acting in the same direction, and each being pressure actuated, with provision for sealing fluid.

Abstract: A high pressure valve is disclosed having dual, independent seat to closure member seals, the dual seal arrangement including a primary seal and a secondary seal, each operating independently, in proper sequence, each acting in the same direction, and each being pressure actuated, with provision for relieving excess fluid pressure.

Abstract: A high pressure ball valve is disclosed having dual, independent seat to ball seals, the dual seal arrangement including a primary seal and a secondary seal, each operating independently, in proper sequence, each acting in the same direction, and each being pressure actuated, with provision for relieving excess fluid pressure.

Abstract: A gate valve [10] is disclosed having a primary [300, 302] and secondary [316] seal on the upstream and downstream sides of the gate [15], wherein the gate [15] forms a seal with the seat [300] which is activated mechanically [320] and is fluid powered, and wherein a resilient seal [316a] is moved toward the gate [15] by mechanical actuation [31 ] to form a fluid powered secondary fluid-tight seal with the gate [15].

Abstract: A high pressure ball valve is disclosed having dual, independent seat to ball seals, the dual seal arrangement including a primary seal and a secondary seal, each operating independently, in proper sequence, each acting in the same direction, and each being pressure actuated, with provision for relieving excess fluid pressure.

Abstract: A gate valve [10] is disclosed having a secondary seal, wherein the gate [15] forms a metal to metal seal with the seat [29, 134] and wherein a resilient seal [36a] is moved toward the gate [15] in a closed position to form a secondary fluid-tight seal with the gate [15]. A device [31, 34] for deenergizing the secondary seal is provided in order to prevent wear of the secondary seal upon opening of the gate and also to reduce the gate [15] drag caused by the energized secondary seal. Also disclosed is a pressure relief mechanism [40, 141] for the secondary seal adapted to prevent damage to the seal and a mechanism for evenly applying opposing secondary seals.

Abstract: A orifice fitting for measuring fluid flow in fluid pipelines has a seal mechanism to seal the orifice plate to the orifice fitting body. The orifice fitting has an orifice plate carrier which moves downward into a seat slot to position an orifice plate in the fluid flow. An annular seal mounts to the orifice plate assembly for engaging and sealing against the downstream side of the seat slot. A retaining ring mounts to an upstream side of the plate carrier. Threads on the retaining ring allow the ring to be adjusted to set the overall width of the plate carrier assembly to provide an interference fit in the seat slot. Set screws in the retaining ring bear against the orifice plate, which in turn bears against the seal member.

Abstract: Gate valve having a primary seal, actuated by fluid pressure in the flow conduit, for preventing leakage along the gate member on the upstream side of the gate valve and a secondary seal actuated by fluid pressure upon leaking of the primary seal and including a self-actuating relief means to prevent build-up of fluid pressure in the valve body in excess of the pressure in the flow conduit.

Abstract: An orifice fitting has a slide valve seal strip of increased sealing area. The orifice fitting has a body with an upper chamber and a lower chamber, separated by a slot. A plate carrier will move an orifice plate from the upper chamber, through the lower chamber, and down into a flow passage below the lower chamber. A slide valve carrier will open and close the slot between the upper and lower chambers. A seal strip locates on the slide valve carrier for sealing against the seat of the slot. The seal strip has on opposite sides a pair of outward extending flanges. Each flange overlies and contacts a shoulder formed on the upper side of the slide valve carrier. The seal strip has a lower section that locates within the shoulders.

Abstract: A orifice fitting for measuring gas flow in gas pipelines has an energized seal. The orifice fitting has a plate carrier which moves downward into a seat slot to position an orifice plate in the gas flow. An annular seal mounts to the plate carrier for engaging a downstream side of the seat slot. The seal is energized or pressed outwardly by hydraulic fluid pressure. The plate carrier has a chamber containing hydraulic fluid and a piston. A pin protrudes outward. The orifice fitting slide valve carrier engages and pushes the pin downward as the slide valve carrier moves to the closed position.

Abstract: A gate valve is disclosed having a secondary seal, wherein the gate forms a metal to metal seal with the seat and wherein a resilient seal is moved toward the gate in a closed position to form a secondary fluid-tight seal with the gate. A device for deenergizing the secondary seal is provided in order to prevent wear of the secondary seal upon opening of the gate and also to reduce the gate drag caused by the energized secondary seal. Also disclosed is a pressure relief mechanism for the secondary seal adapted to prevent damage to the seal and a mechanism for evenly applying opposing secondary seals.

Abstract: A piping suspender with a metal-to-metal seal includes a piping hanger with an annular extension received in a counterbore of a well head and confined by a head adapter. The extension includes upwardly and downwardly facing, generally horizontally disposed shoulders. The upwardly facing shoulder abuts with the lower face of the head adapter and the downwardly facing shoulder abuts with an annular, generally horizontally disposed shoulder on the well head, to sealingly support the piping hanger and connected piping on the well head and to seal the hanger with respect to the adapter. A set of test lines are provided to enable seal testing.

Abstract: A gate valve is disclosed having a secondary seal, wherein the gate forms a metal to metal seal with the seat and wherein a resilient seal is moved toward the gate in a closed position to form a secondary fluid-tight seal with the gate. A device for deenergizing the secondary seal is provided in order to prevent wear of the secondary seal upon opening of the gate and also to reduce the gate drag caused by the energized secondary seal. Also disclosed is a pressure relief mechanism for the secondary seal adapted to prevent damage to the seal and a mechanism for evenly applying opposing secondary seals.

Abstract: Gate valve having a secondary seal, wherein the gate forms a metal to metal seal with the seat and wherein a resilient seal is moved toward the gate when the gate is in closed position to form a secondary fluid-tight seal with the gate, whereby leakage past the gate is effectively prevented.

Abstract: The coupling comprises a flexible conduit, a packoff assembly, and a gland nut for compressing the packoff assembly. The conduit passes through a passage in a first member and is secured to the outlet of a second member. The nut is threaded into the passage of the first member to compress the packoff for sealing securement of the conduit to the first member even though the axes of the passage and of the outlet are not coincident. A collar is disposed on the interior end of the conduit to prevent the conduit from blowing out of the passage if the conduit should break or disconnect from the second member.