Differential Pressure Regulator for Water GD-21 / 10 Bar, Flange 1/2" ~ 6"

Type : Water, Oil & Air, Ductile Iron, 10 Bar, Flange 1/2" ~ 6"
Application : Chilled Water / HVAC
Pressure : 10 Kg/Cm2
Differential Pressure : 0.5 ~ 7 Kg/Cm2
Spring Options : GD-21 : A / 0.5 ~ 2.5 Kg/Cm2
Spring Options : GD-21 : B / 2.6 ~ 7 Kg/Cm2
Temperature : 80 C
Flow Rate : 1.5 ~ 200 M3/Hr.
Size : 1/2" ~ 6"
Connection : Flange JIS 10K
Body : Ductile Iron
Trims : Disc/NBR, Seat/Bronze

Yoshiotake GD-21 Differential Pressure Regulator is used in HVAC to maintain Constant supply and return pressure in a closed circuit. This will maintain Pump Head and giving enough flow to Air Handling Unit.
https://www.yoshitake-inc.com/prod/product?no=315