7L-DS-7 high-capacity pump

7L-DS-7 high-capacity pump for handling refrigerants in a liquid-phase

HII pump model 7L-DS-7 technical data

Liquid pump model 7L-DS-7 - specifications
Parameter	Value
Outlet pressure	up to 86 бар / 8,6 MPa - circulation / lift pump mode 7 - 70 bar / 0.7 - 7.0 MPa - operating range
Drive type	pneumatic, single air drive section
Pump section type	single plunger, double acting
Area ratio	7
Volume displacement per cycle	678.4 ml/cycle
Flow rate / Test piece prefill speed	up to 80 l/min - maximum value 0 - 34 l/min - operating range
Pressure build speed in a prefilled test piece	up to 19000 bar×l/s - maximum value 0 - 8000 bar×l/s - operating range
Air drive pressure	10.3 bar - maximum value 5 - 10 bar - recommended range 2 bar - minimum required value
Inlet pressure	up to 86 bar - maximum value, circulation / lift pump mode 0 - 2 bar - recommended range free flow / moderate vacuum / self-prime - minimum value
Air Drive Temperature limitations	up to + 65 °С - maximum value -3°С ... +3°С - recommended dew point -12 °С - minimum value

Liquid pump model 7L-DS-7 - materials and connections
Hydraulic body	Aluminium
Hydraulic plunger	15-5 PH
Inlet check valve	316 SS
Outlet check valve	316 SS
Static O-rings	BUNA-N - basic model; Viton - modifications
Plunger seal	Compounded PTFE
Inlet liquid port	SAE 7/8"-14
Outlet liquid port	SAE 7/8"-14
Air drive port	3/4" NPT

Plain water, water with Water with soluble oil, water with water with corrosion inhibitors;
Distilled, Deionized water;
Hydraulic Fluid - Petroleum, Water, or Veg. Oil Based
Industrial oils, hydraulic oils, aviation oils, mineral oils, synthetic oils
Hydraulic fluid - skydrol or brake fluids;
Hydrocarbons, solvents;
antifreeze, ethylene glycol, non-freezing liquids;
High purity liquids;
Explosive and fire-hazardous liquids;
Chemically active, aggressive liquids.

Please specify the modification when ordering the pump for the pumped liquid and operating conditions.