Parker Liquid Nitrogen Pump

Condition: Used 15 DAY RIGHT TO RETURN IF FUNCTIONALLY DEFECTIVE
Stock #:
18690
Status:
1 Available In Stock (request a quote)
Dimensions (approx.):
27"L (outside)
Product Description Liquid Nitrogen withdrawal device; liquid Nitrogen is moved only by the pressure of the vapour inside the vessel. Hose is 48" long. Drawing tube is 17" long. Gauge reads to 15PSI.
Liquid Nitrogen has a boiling point of -196C. When the Withdrawal Device is fitted and sealed, the continuous evaporation of the Liquid Nitrogen results in a build-up of pressure within the Dewar. Safety valves ensure that the pressure inside the Dewar does not exceed 6 p.s.i.
The Liquid Nitrogen Withdrawal device works much like a water faucet. Open the valve, liquid comes out. Close the valve, the flow stops. The difference from the faucet analogy is that the liquid coming from the dewar is pressurized only by evaporation within the dewar itself. Therefore, when the valve is opened, the pressure inside the dewar drops. If liquid is withdrawn several times in succession, then the flow rate will decrease, because of the decrease in pressure inside the dewar.

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