Abstract: A bonnet is mounted on an insert support and connected to a valve body to retain a diaphragm in fluid sealing relationship between the body and insert support. The insert support is rotatable relative to the housing of a fluid actuator while being retained in a fixed axial position relative to the housing. A plunger is extended through the insert support to abut against a button that abuts against one side of the diaphragm, the opposite side of which abuts against a valve seat subassembly that is resiliently urged to a valve open condition. The housing mounts a spindle which in turn has an eccentric lobe keyed thereto for moving the plunger toward the diaphragm so that the button flexes the diaphragm to move the seat subassembly to its valve closed position. Piston operated rack mechanism controls the rotation of the lobe for moving the plunger toward the diaphragm. Spring mechanism moves the piston in one direction while fluid under pressure applied to the actuator moves the piston in the opposite direction.

Abstract: A pressure regulator that includes a regulator body having a main bore that has a plurality of progressively reduced diameter bore portions in one axial direction, inlet and outlet ports and a vent passage opening to the main bore, a valve assembly resiliently retained in a closed condition to block fluid flow between the inlet and outlet ports, sensor mechanism in the main bore between a main chamber and the dome chamber of a dome threaded on the body that is axially movable by spring pressure and reference pressure applied through a reference port in the dome toward the valve assembly, and a ball connector between the sensor mechanism and valve assembly that blocks fluid flow from the main chamber to vent bores in the sensor mechanism that open to the vent passage and operates the valve assembly to an open condition when the outlet pressure is more than a preselected value above the reference pressure, permits fluid passage from the main chamber to the vent bores and the valve assembly to block flow from th

Abstract: Torch apparatus for cutting, heating or welding that includes torch head having a torch bore; a torch tip assembly having a tip member that includes a stem portion extending between the head bore with its cutting oxygen passageway opening to the head cutting oxygen passageway and a front member portion joined to the stem portion to extend away from the head, and a barrel retained on the stem portion by a nut in abutting relationship with the front member portion, said barrel having preheat oxygen and fuel gas bores opening into barrel grooves which in cooperation with the stem portion provide passages to mix the preheat oxygen and fuel gas and conduct the mixture to an annular clearance space that in turn opens to the front member mixed gas passageways; a collar on the tip member and a nut threaded on the head to abut against the collar and thereby hold the tip assembly in an assembled relationship to the torch head.

Abstract: A torch having oxygen and fuel gas passages from the torch butt to the torch tip, and valving apparatus for controlling the flow of oxygen and fuel gas from fuel and oxygen adapters on the torch butt to said passages, the valving apparatus including a valve seat, a valve stem, a first ball retained in a valve stem bore for rotation relative to the valve stem and abuttable against the valve seat to block fluid flow therethrough while the valve stem is spaced from the valve seat and a second ball rotatably mounted in a valve stem bore to abut against the first ball axially opposite the valve seat, and lubricant for being transferred from the second ball to the first ball as the valve stem rotates relative the first ball and the first ball rotates relative to the second ball, the first ball being of a substantially larger diameter than the second ball.