Abstract: A rotary multi-port valve having a valve body defining a valve chamber and having a plurality of inlet flow ports each having a stationary seat member therein and having a discharge port. A flow diverter member is supported by a valve stem and a tubular trunnion for rotation within the valve chamber and has a diverter chamber. A piston is hydraulically moveable within the diverter chamber and has driving connection with a diverter valve member is linearly moveable for sealing engagement with a selected stationary seat member. The diverter valve member is selectively retracted to a position completely within the valve chamber to permit selective rotation of the flow diverter member within the valve body to an aligned position with any of the inlet ports of the valve body.

Abstract: A rotary multi-port valve having a valve body defining a valve chamber and having a plurality of inlet flow ports each having a stationary seat member therein and having a discharge port. A flow diverter member is supported by a valve stem and a tubular trunnion for rotation within the valve chamber and has a diverter chamber. A piston is hydraulically moveable within the diverter chamber and has driving connection with a diverter valve member is linearly moveable for sealing engagement with a selected stationary seat member. The diverter valve member is selectively retracted to a position completely within the valve chamber to permit selective rotation of the flow diverter member within the valve body to an aligned position with any of the inlet ports of the valve body.

Abstract: A rotary multi-port valve has a valve body having a primary flow port and a plurality of secondary flow ports. A rotary diverter is rotatable within the valve body and has an internal piston receptacle. A port selector piston is linearly moveable by hydraulic pressure from a de-energized position within the piston receptacle to an energized position for sealing with a selected flow port and accomplishes development of a spring force during hydraulically energized piston movement. Upon reduction of the hydraulic pressure the stored spring force returns the port selector piston to its de-energized position freeing the rotary diverter member for selective rotation to another selected flow port.

Abstract: A rotary multi-port valve has a valve body having a primary flow port and a plurality of secondary flow ports. A rotary diverter is rotatable within the valve body and has an internal piston receptacle. A port selector piston is linearly moveable by hydraulic pressure from a de-energized position within the piston receptacle to an energized position for sealing with a selected flow port and accomplishes development of a spring force during hydraulically energized piston movement. Upon reduction of the hydraulic pressure the stored spring force returns the port selector piston to its de-energized position freeing the rotary diverter member for selective rotation to another selected flow port.

Abstract: An improved hemi-wedge type valve is disclosed that has upstream and downstream sealing surfaces that cooperate with opposed surfaces on the hemi-wedge valve member. This results in improved sealing and less leakage, at both high and low pressures.

Abstract: A skimmer system for removing a substantially liquid substance such as oil floating on the surface of a body of water has a reservoir body defining an collected fluid reservoir and having a primary weir edge. A weir tube extends upwardly within the reservoir and provides a secondary weir edge being of less height than the primary weir edge and defines a vortex chamber. A plurality of buoyancy members support the reservoir body in relation to the surface of the body of water and are adjustable relative to the reservoir body by power operated or mechanical devices for selective positioning of said primary weir edge relative to the water surface. A pump having a suction inlet is in communication with the vortex chamber and has a discharge outlet conducting recovered oil to a collection barge. A power source such as a hydraulic fluid supply is connected in driving relation with the pump.

Abstract: An expanding gate valve having a valve body defining a valve chamber and flow passages and having spaced sealing surfaces. Gate members are moveable within the valve body between open and closed positions and at the closed position having sealing engagement with the spaced sealing surfaces. A wedge member is positioned between the gate members and has at least one tapered surface having reacting engagement with a tapered surface of one of the gate members so that relative linear movement of the gate member relative to the tapered surface of the wedge member develops a lateral gate expansion force causing expansion of the gate members for tight sealing engagement with the spaced sealing surfaces.

Abstract: An expanding gate valve having a valve body defining a valve chamber and flow passages and having spaced sealing surfaces. Gate members are moveable within the valve body between open and closed positions and at the closed position having sealing engagement with the spaced sealing surfaces. A wedge member is positioned between the gate members and has at least one tapered surface having reacting engagement with a tapered surface of one of the gate members so that relative linear movement of the gate member relative to the tapered surface of the wedge member develops a lateral gate expansion force causing expansion of the gate members for tight sealing engagement with the spaced sealing surfaces.

Abstract: An improved hemi-wedge type valve is disclosed that has upstream and downstream sealing surfaces that cooperate with opposed surfaces on the hemi-wedge valve member. This results in improved sealing and less leakage, at both high and low pressures.

Abstract: A surge relief apparatus for sensing, tracking and responding to pressure changes in a flow system. The apparatus includes a fluid storage tank that is in fluid communication with the flow system. The apparatus also includes a control valve that is connected to the fluid storage tank, wherein the control valve compensates for pressure in response to pressure change in the flow system. The control valve also controls the rate of pipeline pressure rise in the flow system. The surge relief apparatus also includes a hydraulic accumulator in fluid communication with the control valve along with a surge relief valve in fluid communication with the accumulator.

Abstract: A valve assembly, comprises a housing having an inlet, an outlet, and an internal volume; a pair of sealing rings and mounted to the housing; and a spherical plug rotatably disposed within the housing for contact with the seating rings, the spherical plug comprising a general spherical main body having a generally cylindrical bore therethrough; and a plurality of slotted plates longitudinally parallel to each other and parallel with the axis rotation of the spherical plug.

Abstract: A compact expanding gate valve having a valve body defining a flowway and having spaced internal seat rings. Guide elements project internally from the valve body. A valve stem driven gate and segment assembly is movable within the valve body between open and closed positions relative to the seat rings and has control arms mounted by actuating pins to each side of gate and segment members of the gate and segment assembly. The control arms are movable linearly with the gate and segment assembly and are disposed in guided relation with the guide elements during opening and closing movement.

Abstract: A swing-type check valve (10) having a bonnetless two-piece valve body (12, 14) with a valve chamber (22) and inlet and outlet ports (15, 21) defining a flow passage through the valve. A clapper (25) fixed to a clapper shaft (28) is restrained in working location by the two valve body members as mated in assembly and is adapted for pivotal movement between a valve open position and a valve closed position. A planar valve sealing surface (23) is provided on the end of one of the valve body members and positioned in the valve chamber in a location where it is protected from erosion from flow through the valve and adapted to be sealingly engaged by the clapper element (25). Guide ribs (40) are formed in the valve body for guiding the clapper (25) in movement between its valve open and valve closed positions so as to insure a seal by the valve clapper (25) when in its valve closed position irrespective of the orientation of the valve.

Abstract: A subsea barrier valve 20 with a valve clapper 60 adapted for free swinging movement on a clapper shaft 62 between a position which closes the flow passage through the valve and a position proximate the fully open position such that the clapper is held open by a pressurized flow of gas through the valve. In the event of an upstream pipeline failure, the clapper closes in a "fail-safe" manner. The clapper can be pivoted and locked in the full open position by axial rotation of a locking shaft 105 which extends through a cover member 30 for an access opening in the valve body 21. The locking shaft 105 extends perpendicular to the clapper shaft 62 and is interconnected therewith by a gear drive 106 including a clutch gear 126 which allows a limited range of free pivotal movement of the clapper 60. The locking shaft 105 is controlled by actuator means 140,141 mounted on the cover member 30 by a separable fastener 142. The cover member 30 is clamped by a releasable clamp means 35.

Abstract: A ball valve structure (10) having a valve seat assembly (46) positioned in annular seat pockets located in a flow passage (14) on opposed sides of a ball valve member (18). Each valve seat assembly is mounted for limited longitudinal movement toward and away from the adjacent ball valve member (18) and spring means (54) are placed within the seat pockets behind the valve seat assemblies to urge the assemblies toward and into intimate contact with the ball valve member. The valve seat assembly includes inner and outer annular concentric seat rings (48, 50) with a resilient sealing ring (52) secured therebetween. The inner annular seat ring has a flared end (64) which fits inside the outer seat ring and energizes or deforms the sealing ring (52) held therebetween, thereby, securely retaining the sealing ring between the seat rings and preventing the introduction of line pressure behind the sealing ring to possibly extrude the sealing ring from its position within the seat rings.

Abstract: A ball valve includes a metal valve seat (36) carrying a relatively soft insert (40) which seals against a ported ball member (22). A packing ring (72) surrounding the seat is compressed between a spring loaded metal wedge (84) and a metal backup ring (66) to provide a seal between the seat and valve body. If the soft seals are destroyed by fire, the metal seat is pressed against the ball member to provide a metal-to-metal seal. Additional metal-to-metal seals are provided between the seat and valve body by the metal wedge and backup ring.

Abstract: A spring assembly (56) for a floating seat ring (40) to urge the seat ring into sealing engagement with the movable valve member. The seat ring is mounted in an enlarged bore portion at the valve chamber and has an annular rear face in opposed relation to a shoulder defined by the enlarged bore portion. The improved spring assembly is mounted in the spring pocket formed between the rear face and the shoulder and has a plurality of undulated annular wave springs (58, 60) about the seat ring. Each pair of contiguous wave springs is staggered so that the front nodes of one wave spring in each contiguous pair is in opposed contact relation to the rear nodes of the other wave spring of each contiguous pair. A flat portion (44A) on the outer circumference of the seat ring is in nested relation to a cooperating flat portion (64) on the inner circumference of the wave spring to maintain the wave spring in an oriented staggered relation.

Abstract: An expanding gate valve having a pair of seat spacers (70) which hold apart a pair of floating valve seats (32) to prevent them from binding against a gate mechanism (40) which is collapsed for movement between open and closed positions. The spacers (70) are cylindrical segments which fit in the valve chamber of a gate valve having a cylindrical body cavity (20).

Abstract: A ball valve structure has a removable upper cover plate (16) to permit the ball (34) to be removed from the valve body. A separate cam tool (90, FIGS. 8-10) after removal of the cover plate is positioned within the bore of the ball which has been partially rotated from the full open position, and upon a return rotation of the ball with the cam tool therein to a full open position an adjacent spring urged seat ring (58) is cammed away from the ball to a retracted position. A seat ring retainer (82) is then actuated to hold the seat ring in the retracted position. The cam tool is then utilized in a similar manner to cam the other opposite seat ring in retracted position. The ball may then be removed with the seat rings for replacement or repair as desired. The seat rings and seals (70) thereon may be removed and replaced in such manner without removal of the valve from the flowline in which the valve is positioned.

Abstract: A ball valve seat assembly has a seat ring with an annular recess around an inner annular portion thereof and a resilient seat ring insert mounted in the recess. The seat ring has a radially outwardly extending groove located within the recess. The insert has a radially outwardly extending retaining flange which is engaged in the seat ring groove to anchor the insert. The insert is sufficiently deformable to be radially inwardly deformed temporarily as the flange is moved through the interior of the seat ring and into the groove. The insert has a face portion that is sealingly engaged with the ball valve member. The seat ring and the insert are biased toward the ball valve member and a peripheral seal is provided around the seat ring to seal with the valve body. The seat pocket inner side extends in an overlying relation to a portion of the insert in order to prevent radially inward movement of the insert.