Required Handcompression Pumps for Supply to Govt Public Health care Oranization  with th foloowing specs.
Hand operated Compression Knap-sack sprayer of 12 Lts Capacity, Non-pressure retaining type, Main tank made of Brass, attached with Plunder and Pump Cylinder; Tank fitted with Pressure release valve and Pressure Gauge separately and having a suitable handle.  
The sprayer should be fitted with a control flow valve (CFV) for use in Public Health (with RED colour).  The valve should operate at either 2 or 1.5 bar and should give a constant output at the nozzle until the tank pressure is below the stated pressure of the CFV,  and the spraying shall stop, indicating that the tank should be re-pressurized.  The CFV must be fitted between the tank outlet and the nozzle, preferably next to the nozzle.                                                                                                              
The pump shall have ISI/BSI certification as per IS;1970(Part I) – 1974, as amended up-to-date.