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Series 40 Positive Displacement Rotary Piston Pumps

Instruction Manual

 

BYPASS HEAD MODEL 40AX

This TriRotor pump model has an integral dashpot relief valve-in-head, The standard spring can be set up to 50 PSI at which setting it will bypass full volume; the heavy duty spring can be set up to 100 PSI.

TO ADJUST BYPASS RELIEF PRESSURE





Remove hexagonal cap (A) and loosen locknut. Turn adjusting screw (B) in to increase pressure and out to decrease pressure.

Tighten locknut and replace hexagonal cap, making sure copper gaskets are in place.

 


TO REVERSE DIRECTION OR ROTATION 40A


The rotation of the 40AX pump may not be reversed in the field for extended periods of time. The pump may be run in reverse TEMPORARILY for such purposes as stripping the lines, etc.

• To reverse the direction of rotation, a bypass head pump of opposite rotation must be ordered from the factory. See "putting pump into service" section of Page 1.

SOLID HEAD MODEL 40A

The model 40A has a solid head with the shuttle pin set in a fixed position to give constant volume for simple transfer service. A RELIEF VALVE SHOULD BE INSTALLED IN THE DISCHARGE LINE FOR PROTECTION.

TO REVERSE DIRECTION OF ROTATION 40A

The rotation of the 40A pump may not be reversed in the field for extended periods of time. The pump may be run in reverse TEMPORARILY for such purposes as stripping the lines, etc.

• To reverse the direction of rotation, a solid head pump of opposite rotation must be ordered from the factory. See "putting pump into service on Page 1.