Balanced foam proportioning device 
 Outline 

 The balanced pressure proportioning devices are injected into the foam fire extinguishing agent through the bubble pump foam proportioner with the fire hose by a certain percentage of the device to form a foam mixture, is a new type of foam mixing device, in recent years in the petrochemical, oil, offshore platforms, tunnels and other occasions been widely used. Compared with the pressure foam proportioning device has the following characteristics: 
 ? By atmospheric pressure, no capsule foam liquid storage tanks can be added in the course of the foam liquid, thus extending the time for the fluid; 
 ? Bubble pump injection proportioner, provides a wide range of mixture flow; 
 ? Differential pressure balance valve to adjust the foam liquid injection pressure, the dynamic adjustment of the mixer bubble liquid into the volume, provide a stable mixture of the mixing ratio. 
 Form 

 Balanced pressure proportioning device is mainly composed of foam tank, foam pump, power source, balancing valve, proportioner, with the pressure relief valve, composed of 
 The foam pump gear pump, rotor pump, foam pump, turbine, electric motor or diesel engine three drive mode. 
 Foam tank capacity can be set according to the practical application of engineering. 
 The main technical parameters 

 Model flow range of import and export path design pressure of the working pressure range mixing ratio of the pressure loss 
 PHP100 24 ~ 100L / s DN100 1.6MPa 0.6-1.2MPa 3% or 6% ≤ 0.2 
 PHP170 48 ~ 170L / s DN150 1.6MPa ≤ 0.2 
 PHP200 48 ~ 200L / s DN200 1.6MPa ≤ 0.2