Abstract: A shaft seal includes a lip at the low pressure end with a tapered cylindrical body extending from the lip. The tapered cylindrical body has a first diameter where the tapered cylindrical body meets the lip and a second diameter at a distal end that is exposed to a high pressure fluid. An aperture is formed through the lip and through the tapered cylindrical body following an axis of the tapered cylindrical body. The aperture has a first end at the lip and a distal second end. At the first end, the aperture has a first inner diameter that is slightly greater than the outer diameter of the shaft at the distal end, the aperture tapers to a second inner diameter which is approximately the diameter of the shaft. An o-ring, is positioned around the tapered cylindrical body applying pressure on the tapered cylindrical body against the shaft.

Abstract: A dispensing system has a head assembly affixed to a mixing chamber. The head assembly is fluidly interfaced to a first rod seat and the second rod seat. The first rod has a first rod head and the second rod has a second rod head. Distal ends of both rods are interfaced to a system for moving. In a closed position, the first rod head seats in the first rod seat and the second rod head is seated in the second rod seat, blocking fluid communication between the first input port and the mixing chamber and between the second input port and the mixing chamber. In an open position, the first rod head is separated from the first rod seat and the second rod head is separated from the second rod placing the first input port and the second input port in fluid communication with the mixing chamber.

Abstract: A collider mixer includes a collider mixer element of cylindrical shape. Partitions form cylindrical channels around the collider mixer element. An input port is coupled to a first channel and an output port is coupled to a last channel. Exactly one inter-partition passage is formed in each of the partitions and a mixing chamber with a cylindrical inner surface holds the mixer element such that outer edges of the partitions seal against the inner surface of the mixing chamber, forming the channels. Fluids enter the input port and splits. A first portion of the fluids flow one direction through each channel and a remaining second portion of the fluids flow in an opposite direction through the same channel. The first portion of the fluids and the second portion of the fluids meet and collide at the inter-partition passages, then pass through the inter-partition passage to an adjacent channel.

Abstract: A dual input valve includes a valve stem having an air valve that includes a captured o-ring held in a circumferential groove. A catalyst valve ball abuts the valve stem. A housing has a catalyst input port in fluid communication with a catalyst valve seat, an air input port in fluid communication with a air valve seat, a mixing area in fluid communication with the catalyst valve seat and the air valve seat, and an output port in fluid connection with the mixing area. A spring urges the catalyst valve ball, and hence, the valve stem towards a closed position in which the air valve seats against the air valve seat blocking flow of a air from the air input port into the mixing chamber and the catalyst valve ball seats against the catalyst valve seat blocking flow of catalyst from the catalyst input port into the mixing chamber.

Abstract: A shaft seal includes a lip at the low pressure end with a tapered cylindrical body extending from the lip. The tapered cylindrical body has a first diameter where the tapered cylindrical body meets the lip and a second diameter at a distal end that is exposed to a high pressure fluid. An aperture is formed through the lip and through the tapered cylindrical body following an axis of the tapered cylindrical body. The aperture has a first end at the lip and a distal second end. At the first end, the aperture has a first inner diameter that is slightly greater than the outer diameter of the shaft at the distal end, the aperture tapers to a second inner diameter which is approximately the diameter of the shaft. An o-ring, is positioned around the tapered cylindrical body applying pressure on the tapered cylindrical body against the shaft.

Abstract: A dual input valve includes a valve stem having a compressed air valve that includes a captured o-ring held in a circumferential groove. A catalyst valve is also on the valve stem. The housing has a catalyst input port in fluid communication with a catalyst valve seat, a compressed air input port in fluid communication with a compressed air valve seat, a mixing area in fluid communication with the catalyst valve seat and the compressed air valve seat, and an output port in fluid connection with the mixing area. A spring urges the valve stem towards a closed position in which the compressed air valve closes against the compressed air valve seat blocking flow of a catalyst from the catalyst input port into the mixing chamber and the catalyst valve closes against the catalyst valve seat blocking flow of a catalyst from the catalyst input port into the mixing chamber.

Abstract: A dual input valve includes a valve stem having an air valve that includes a captured o-ring held in a circumferential groove. A catalyst valve ball abuts the valve stem. A housing has a catalyst input port in fluid communication with a catalyst valve seat, an air input port in fluid communication with a air valve seat, a mixing area in fluid communication with the catalyst valve seat and the air valve seat, and an output port in fluid connection with the mixing area. A spring urges the catalyst valve ball, and hence, the valve stem towards a closed position in which the air valve seats against the air valve seat blocking flow of a air from the air input port into the mixing chamber and the catalyst valve ball seats against the catalyst valve seat blocking flow of catalyst from the catalyst input port into the mixing chamber.

Abstract: A spray gun has a spray gun body with at least one fluid input port. A nozzle is removably affixed to the spray gun body and valves are in fluid communication between each of the at least one fluid input ports and the nozzle. A trigger is movably attached to the spray gun body and is operatively coupled to the valves such that operation of the trigger opens each of the valves and fluid flows from the at least one fluid input port through the valves to the nozzle. Included are at least two pairs of handle grips. Each of the at least two pairs of handle grips are of a different size, each size corresponding to a hand size, and one of the at least two pairs of handle grips is removable affixed to the spray gun body.

Abstract: A reduced wear single input valve includes a valve stem that has a first end and a distal end, and a valve housing that has an input port and an output port. The valve stem pass through a seal interfaced to valve housing at the output port side. A valve seat is within the valve housing has one side in fluid communication with the output port and an opposing side in fluid communication with the input port. A ball is urged against the valve seat by a force of a resilient member, thereby preventing flow of fluid from the input port through the valve seat and to the output port until an opposing force is applied on the ball by the valve stem, thereby counteracting the force of the resilient member. The valve stem is isolated from a pressure from the input port while the ball is seated.