Neptune Pumps

NEPTUNE HYDRAULICALLY ACTUATED METERING PUMPS:


Variable Oil By-pass™ stroke adjustment allows better valve performance than variable linkage designs. The valve checks have extra time to seat even in heavy liquids since they are idle during the by-pass portion of the suction and discharge strokes.

All Neptune "dia-Pumps" are adjustable from 10% through 100% of capacity by micrometer dial.

Neptune "dia-Pumps" are available in the following materials of construction:

  • Cast Iron with 316SS Trim
  • 316SS • PVC • Alloy 20 • Kynar

EZE-CLEAN™ Valves–Cartridges can be removed for cleaning without disturbing the piping to the pump.
Simplex capacities from 0.2 gph (0.75 lph) to 80 gph (302 lph), Pressures to 3000 psi (210 kg/cm2)

Neptune Electric Stroke Control allows the capacity of any Neptune Series 500 or Series 600 "dia-PUMP" to be automatically controlled in response to a standard 4-20 mA process signal. Also accepts 0-5 VDC/0-10 VDC signal or digital pulse train inputs. One-piece controller- positioner mounts directly to the pump. No machining or any special drillings or tappings needed to retrofit pump. Ideal for water/wastewater, power and process industry applications...anywhere that pump flow must be automatically proportioned or varied.

Neptune Model 481-S and 501-S hydraulic diaphragm metering pumps are built to deliver very low flows, repeatable and accurate ranging down to quarts per day. Discharge pressures are higher than are possible with mechanical diaphragm pumps. Explosion-proof models are available for use in hazardous atmospheres.

These pumps are especially popular in oil/gas production, oil recovery and refineries. Typical applications include the injection of antifoam agents, corrosion inhibitors and other additives injected at very low volumes but high pressures. These pumps are also used for neat feeding of boiler chemicals.

Series 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.

  • 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.

Neptune Series 500 tubular diaphragm pumps are engineered for viscous fluids up to 20,000 cP and for medium slurries up to 10% solids.

  • No-clog design. Straight-thru flow pattern eliminates pockets where slurries can settle.
  • Easily handles high viscosity liquids.
  • Double diaphragm is standard.
  • Capacities to 80 gph (302 lph).
  • Control options include electric or pneumatic stroke control and variable speed drives.
  • Standard units with double ball suction and discharge valves. Single ball suction valve is optional.
  • Variable Oil By-pass™ stroke adjustment mechanism provides better valve performance than variable linkage designs.

Neptune high viscosity, flat diaphragm "V-Pumps" are designed to accurately meter viscous fluids up to 5000 cP such as polymers and other thick liquids.

  • Handles moderate viscosity fluids.
  • Standard flat diaphragm.
  • Large internal porting with a large, single ball, suction check valve.
  • Capacities to 30 gph (113 lph) at 100 psi (8 kg/cm2).
  • Available in all 316SS with SS trim.
  • Electric or pneumatic stroke control options and variable speed drives.
  • Variable Oil By-pass™ stroke adjustment mechanism provides better valve performance than variable linkage designs.
  • Teflon® diaphragm withstands most chemicals.

Variable Oil By-pass™ stroke adjustment allows an adjustable time delay between the end of the suction stroke and the beginning of the discharge stroke. This delay permits the ball to seat fully before pumping resumes, even in the heaviest liquids, so that pumping accuracy remains high.

  • Capacities to 240 gph (908 lph)
  • Pressures to 4000 psi (280 kg/cm2)
  • Accepts standard 56C motor.
  • Pump capacity is adjustable by micrometer dial while pump is running or stopped.
  • Capacity Control Options: Electric positioners or variable speed drives are available for automatic capacity control.
  • EZE-CLEAN™ valves are removable without disturbing piping.
  • Variable Oil By-pass™ stroke adjustment allows improved valve performance over variable linkage designs.

The Neptune Series 7000 "dia-PUMP" is a mechanically actuated diaphragm metering pump designed for water, wastewater and process applications.

The mechanical design eliminates the use of contour plates on the liquid side of the diaphragm. The simple, straight through valve and head design allows improved flow characteristics.

  • Self-priming
  • Superior performance when pumping chemicals such as sodium hypochlorite, which can off-gas
  • Suction lift exceeding 20 ft. on water-like chemicals
  • Easily handles viscosities in excess of 5000 cps
  • Maximum capacities range from 15 gph to 300 gph at 150 psi, depending on model
  • PVC, Kynar, and 316SS liquid ends available

NEPTUNE ELECTRONIC METERING PUMPS:

Electronic diaphragm metering pumps. Operates on any single phase voltage from 94 VAC to 264 VAC. Manual, 4-20 mA or water meter pulse controlled. Flows up to 204 gpd and pressures up to 220 psig.

Manual, automatic and programmable versions.

PVC, Acrylic, PVDF, SS and degassing heads.

Options available: Flow checker (feed Verification)

Neptune By-Pass Feeders are a convenient method of introducing treatment chemicals into closed circulating water systems.

Neptune By-Pass Feeders are ideal for use with chilled water treatment such as air conditioning systems or hot water treatment in heating systems or large engine water jackets.

Neptune offers two styles of By-Pass Feeders: A vertical style with dish bottom in and a vertical style with dish bottom out.

Filters are available for system cleanup and monitoring.
A new high pressure cap rated to 300 psi is now available. The first closure improvement in over a decade.

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