Economical Metering Pumps Series 500E "dia-Pump"
From Neptune Chemical Pump Company Inc

Economical,Metering,Pumps,Neptune,Chemical,Pump,Company,IncSeries 500-E offers an economical alternate to the standard Series 500 "dia-PUMP" or an opportunity to "step-up" from packed plunger pumps to a true hydraulic diaphragm pump at a modest cost increment.

Features and Benefits

  • Capacity to 18 gph (68 lph); Pressure to 1100 psi (77 kg/cm2)

  • Available liquid end materials: Cast Iron, 316SS, PVC, Kynar®

  • Variable Oil By-pass™ stroke adjustment allows improved valve performance over variable linkage designs.

  • Capacity control options include pneumatic or electric stroke length adjustment and variable speed drives.

Download Literature for:

Low Volume Applications

High Viscosity Applications

Higher Volumes and Pressures

Search This Site

(Search by Product Type i.e. Level or Brand Name i.e. Walchem)


About Us

Metex Corporation Limited has been providing superior products and services to the process control, chemical treatment, waste water, industrial and manufacturing industries for over 25 years. It is our goal to continually provide our customers with the best possible equipment, technology, and service.


Our Products

Dataloggers, sensors, pumps, recorders, hand held instruments, flow instrumentation, level controls, valves, instrumentation, containers, tanks, transmitters, data loggers, digital indicators, mixers and agitators, pressure intrumentation, analyzers and controllers for a variety of industrial applications such as water quality, pH/ORP and more.

Website Content

Water Analyzers and Controllers, Wireless Products, Corrosion Monitoring Equipment, Cooling Tower and Boiler Controllers, a wide variety of Pumps, Valves, Dataloggers and Recorders, HVAC, Instrumentation, Skids and Systems, Containers and Tanks from world leading manufacturers are products you will find on this site.

Get in Touch