OceanSphereENGINES
Library› Engine Room› Pumps› Submersible Pump› Grindex Minex
Grindex

Minex

Submersible Pump · Pumps

Technical data from manufacturer or class sources · not yet verified by a person​‍​⁠‍⁠‍​​‍‌⁠‍⁠‍‍‍‍⁠‌
230Voltage

The Grindex Minex drainage pump utilizes a revolutionary hydraulic design to ensure high wear resistance and minimize performance decline over time. This compact pump, part of the Grindex drainage range, boasts all the essential features of its larger counterparts, offering the lowest cost per cubic meter pumped. Measuring 2 inches, the discharge connection accommodates both 2-inch hose and 2-inch NPT or ISO-G threads. Powered by a 230-Volt AC, single-phase motor with a rated current of 8.2 amps, the Minex features a cartridge seal with a double mechanical seal running in an oil compartment. The lower seal is constructed from silicon carbide, while the upper seal is made of tungsten carbide and aluminum oxide. This pump is designed to handle liquids with a maximum temperature of 40 degrees C (104 degrees F) and a pH range between 5 and 8. The maximum submersion depth is 20 meters (66 feet), and it can pass solids up to 0.3 inches (1/3 of an inch) in diameter.

Specifications

Technical data.

Do you have the manufacturer datasheet for this model? Send it with the enquiry form — we check it and name the source.

Reference values — not verified
Power1.3-2.0 HP / 1.0-1.5 kW
Flow150 GPM
Head70 ft
Solids Passage8 mm (0.3 inches)
Voltage230 Volt

Source: pumpagents.com · not checked against a manufacturer datasheet

Inspection

Inspector Detail

Common issues

  • Mechanical seal wear allowing water ingress into the motor housing
  • Impeller wear or clogging from solids beyond the pump's rated passage size
  • Cable gland/entry seal degradation causing motor moisture ingress
  • Thermal protector nuisance tripping from running dry or against a closed valve
  • Bearing wear from prolonged operation in abrasive or dirty water
  • Float switch/level control fault causing dry-running or overflow

Inspection checklist

  • Check the oil chamber (seal housing) for water content or emulsification
  • Insulation resistance (megger) test of the motor windings
  • Inspect impeller and pump housing for wear, clogging, or solids damage
  • Check cable and gland for cuts, abrasion, or perished insulation
  • Function-test thermal protection and float switch, if fitted
  • Check lifting handle/chain and discharge coupling for corrosion or wear
  • Verify the pump runs within rated current draw at test flow

Service intervals

Seal oil chamber checktypically every 1,000-2,000 running hours or every 6-12 months, whichever comes first
Insulation resistance testevery 6-12 months, or before returning to service after storage
Impeller/wear plate inspectioncondition-based, typically annually or when flow/head drops off
Cable and gland inspectionevery 6-12 months

Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.

Typical wear limits

Seal chamber oil water contentany significant water content or emulsification at inspection indicates seal wear and warrants seal replacement - no fixed percentage threshold published, follow maker's service manual

Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.

Critical spares

  • Mechanical shaft seal kit
  • Impeller
  • Cable entry seal/gland kit
  • Seal chamber oil (correct grade per maker)

Safety

  • Electrically isolate before handling - a submersible pump with a failed seal presents a shock hazard
  • Confined space/drainage pit precautions when retrieving or installing the pump
  • Do not run dry or against a closed discharge valve - risk of overheating and seal damage

Class survey

Portable/emergency drainage pumps are often checked during fire and emergency equipment surveys for availability, condition and correct stowage rather than as a fixed CSM item; where fitted as a permanent bilge/drainage pump, verify against the vessel's approved bilge pumping arrangement.

Estimated lifetime: Compact drainage pumps of this class typically give several thousand hours of service between seal/impeller overhauls under normal duty, with total service life strongly dependent on solids content and dry-running incidents rather than a fixed hour figure

Need this part?

Request a quote for this model.

Free of charge — send us your request for Grindex equipment. Our team checks it and replies by e-mail.

For marine equipment hardly any maker or authorised dealer will name a price while the vessel is unknown. With the vessel details, availability and price can be settled faster; without them we may have to ask first, which costs a few days. If you are not allowed to name the vessel, a photo of the rating plate is enough — attach it below or send it as a reply to our confirmation e-mail.

Your contact details are not published. No account required.
Related models

Also in Submersible Pump.

Other models of the same equipment type, Grindex first.

By manufacturer KawamotoGrindexTsurumiEbara MarineGrundfosDESMIHidrostalKloskaFlowserveCalpeda MarineSEIMINikkiso ACDSterling SIHISulzerAll manufacturersSpare parts by equipmentNew here? Create a free account Can't read the plate? Try the nameplate scanner More like Minex
More than the data sheet shows

We answer by e-mail, never with an automatic reply.

Tell us what you need for this Grindex Minex — a part, a service call, a second opinion. Are you Grindex? Claim this brand page.

Service engineer? Write the day report for this Minex in OceanSphere Work — photos, hours and parts, as a PDF for the owner. Try it free for 14 days →

Frequently asked

Questions that come up with this equipment.

Is this model's data free?

Yes. Specifications, documents and service notes for this model are readable without an account. An account adds saved searches and requests, nothing is taken away.

Can you find a part for this exact model?

Yes. Tell us the manufacturer, the model and what you need — a person reads every request and replies by e-mail.

The specifications look wrong — what now?

Send us the nameplate or the correct value. We check it against the manufacturer datasheet or class-society record and update the page.