EXT-420-2 high-pressure, positive-displacement two-stage piston pumps are safe, proven, reliable, and energy saving butane / propane extraction pumps. The high-pressure pumps offer the flexibility to speed completely variable from zero to maximum lbs/minute. No need for unloaders or bypass valves, simply add gauges and hoses to suit your application. Features and Benefits:
Safe for handling propane and butane (Vent port must be connected to an exhaust line that vents leaked gas outdoors)
Viton and PTFE seals
Stainless steel and aluminum wetted components
High butane transfer rates
No electrical components
Stall against load – start against load – or run dry
Requires compressed air to drive the pump – approximately 30 CFM at 100 psi (7 bar) to run the pump at maximum speed (about 60 cycles per minute)
Clean – No lubrication required in the gas section – Nothing is added to the gas
Specifications
Specifications:
Switchable between single and two-stage mode by turning a valve
use single stage mode for most of the transfer – when the inlet pressure starts to drop – switch to two-stage mode to pull vacuum as your process requires
In single stage mode – the pump has identical performance to eXt420
two stage mode allows the pump to draw vacuum down to 23-in. Hg
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