Pump Solutions Group Neptune Series 500 Specs Municipal - Manual

7-01-2001 1
I. General
A. The metering pumps shall be hydraulically balanced diaphragm type,
wherein a piston reciprocates within a cylinder and causes hydraulic
fluid to deflect a flat diaphragm.Mechanical and solenoid pumps are
unacceptable.
II. Pump Description
A. Pump capacity shall be adjustable through 100%of the range by
manual micrometer dial while the pump is running or stopped.Pump
stroking speed shall not exceed 150 spm. All parts of the power train
must operate submerged in oil.
B. Pump shall be sized to deliver the required capacity at 85%of
maximum stroke length.Stroke adjustment shall be variable oil bypass
type mechanism with the plunger powered through its entire travel.
Mechanical lost motion designs are not acceptable.
C. Pump shall include an automatic vent and refill mechanism on the
hydraulic side,which operates once each stroke.The pump shall have
an internal relief valve, which is externally adjustable.
D. Double ball check valves shall be provided in both the suction and
discharge to insure accurate repeatable metering. The pump valves
shall be removable for cleaning or replacement without the need to
disconnect the suction or discharge piping.
215-699-8700
Fax: 215-699-0370
Toll-free Fax: 1-800-255-4017
www.neptune1.com
Chemical Metering Pump &Accessories Specifications
for General Use
Neptune Chemical Pump Co.
P.O. Box 247
Lansdale, PA 19446