The Z-2 foam inductor is used for induction and dispensing foam concentrate, and mixingit with water flowing through the foam inductor.
The Z-2 device is connected to the hose line between the pump and the PP-2 heavyfoam nozzle or the WP2 medium foam nozzle.
Water flowing out of the inductor's drive nozzle at high speed creates a vacuum in thesuction chamber. The underpressure sucks the foam concentrate from the containerthrough the suction hose 25 and mixes it with water. The dosage is regulated by settingthe dose knob in the range from 0 to 6%. The complete Z-2 foam inductor consists of abody, an inlet base, an outlet base, a suction adaptor with a diameter of 25 mm, and adosing valve with a knob.
In firefighting, the designation Z-2 is used (it has a suction cap with a diameter of 25 mmand two delivery adapters with a diameter of 52 mm), where the number means watercapacity in hl/min at the nominal flow rate of water through the sucker at a pressure of5.5 kG / cm3.
Maintenance and storage
After each use, the Z-2 foam inductor should be thoroughly rinsed with water.Periodically, the valve spindles, the adaptor's lugs and skirting boards should be greasedwith a grease e.g. ŁT-43 or ŁT-43S.
Z-2 foam inductor should be stored in covered rooms, protected from atmosphericinfluences and agents that may cause corrosion. During storage, the foam inductor mustbe protected against mechanical damage
Technical description and conditions for the use of the productZ-2 foam inductor
The Z-2 foam inductor is equipped with a dosing valve, which ensures obtainingappropriate concentrations of the aqueous foam concentrate solution. The valveknob is marked with Arabic numerals: 0; 0.5; 1; 2; 3; 4; 5 and 6 correspondingto the respective concentrations of foam agent.
The valve knob is secured with a plunger before disconnecting. The Z-2 foaminductor is equipped with a non-return valve that prevents the water fromflowing through the suction adapter 25.
The inlet and outlet end of the inductor have a 52-T delivery adapter. Behind theinlet a sieve filter is placed. On the inductor body an arrow indicating thedirection of flow of the aqueous foam concentrate is placed. On the foaminductor body there is a sign indicating the position of the valve knob. Theaspirator body has a powder coating in gray color.The nominal value of the flow rate of the aqueous foam concentrate solution forZ-2 sucker is 200 dm3 / min.