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The Loctite Series 9000 Rotospray Pump is a pneumatically-operated piston pump. It has a
single ball type check valve at the outlet and a flooded inlet. The piston stroke is adjustable to
control the amount of product dispensed.
Fig. 2 below shows the sequence of operation:
Fig. 2
Rotospray Pump Operating Sequence
Theory of Operation4
6
PISTON RETRACTED, CHECK BALL ON SEAT,
METERING CYLINDER FILLED WITH PRODUCT.
OFF SEAT, PRODUCT DISPENSED.
PISTON MOVING FORWARD, CHECK BALL
PISTON MOVING BACK, CHECK BALL ON SEAT
VACUUM FORMED IN METERING CYLINDER.
PUMP READY FOR ANOTHER DISPENSE.
METERING CYLINDER IS REFILLED WITH PRODUCT.
PISTON FULLY RETRACTED, CHECK BALL ON SEAT,