Abstract: A fluid proportioning valve meters a flow of secondary fluid into a flow of primary fluid in a predetermined, controllable proportion of secondary fluid to primary fluid and in a predetermined, controlled volume flow of secondary fluid responsive to volume flow of primary fluid. The fluid proportioning valve includes: a housing defining a conduit in operation for flow of secondary fluid from an inlet in communication with a source of secondary fluid towards an outlet in communication with a source of primary fluid; a first valve element disposed within the housing and defining a first valve opening between inlet and outlet; and a second valve element disposed within the housing and defining a second valve opening between inlet and outlet.

Abstract: Turret for moving a fire fighting nozzle in an oscillation mode and in an elevation selecting movement. The turret having a separate controllable double-acting pneumatic cylinder for each movement, operated by pressured air.

Abstract: System for distributing secondary fluid into a primary fluid, as in a fire-fighting system, including a proportioner having plurality of passages, each of which is sized for the amount of secondary fluid necessary for a particular one of a plurality of fire-fighting elements.

Abstract: Nozzle for use with a non-aspirated fire-fighting medium capable of a selection of two rates of flow and two modes of spray control.

Abstract: Nozzle for use with a non-aspirated fire-fighting medium capable of a selection of two rates of flow and two modes of spray control.

Abstract: Nozzle for use with two different fire fighting agents, these being a ball valve and an exit tube for each agent.

Abstract: Nozzle having a housing with a cylindrical inner surface and with a fixed wall extending at a right angle to its axis. A movable wall is mounted in the housing adjacent the fixed wall and is rotatable about the axis, so that a pattern of apertures in the movable wall match similar apertures in the fixed wall to control flow of fluid therethrough.

Abstract: Fire fighting nozzle having a hard grip containing a bottom-actuated pilot valve which admits small amounts of a fluid under pressure to a main fluid valve to control its operation to regulate large flows of the fluid.

Abstract: A fire fighting turret including three 90.degree. elbows arranged seriatim with swivel joints where the two end elbows are connected to the central elbow attached to a second turret in such a manner that reaction forces create no problem and the field of aiming is affected very little.