✅ This item is normally regularly stocked. Shipping times may vary depending on availability. Please contact us to confirm stock and shipping times. You will receive tracking details once the item has shipped.
Description
Pre-Packaged Spare Parts Kits That Restore Worn Liquid Ends On LMI Legacy Chemical Metering Pumps — Diaphragm, Ceramic Check Balls, Seats, And Seal Hardware In One Box
LMI Legacy Maintenance Rebuild Kits contain the wearing components needed to restore the liquid end of an LMI Milton Roy chemical metering pump. Each kit fits a specific group of LMI liquid ends across the A, AA, B, C, P, and E series, both retired and current models.
Key Features of LMI Legacy Metering Pump Maintenance Rebuild Kits
- Genuine OEM LMI Milton Roy parts — not aftermarket equivalents, so wet-end dimensions, valve geometry, and elastomer specs match your original pump exactly.
- Covers 50+ liquid end variants across the A, AA, B, C, P, and E series, one kit family handles both retired and current LMI legacy pumps.
- Pre-packaged for one pump rebuild — each kit contains the diaphragm (Liquifram™), ceramic check valve balls, valve seats, seal rings, clamp rings, and spring as needed for the specific liquid end family.
- Matches LMI's recommended maintenance schedule — LMI recommends replacing elastomeric components every year to maintain product reliability and metering accuracy.
- Mix-and-match volume pricing across the LMI catalog — stack discounts on multiple SP kits in a single order (2% off at 2 units, 4% at 4, 5% at 8, 7% at 10+).
- Stocked in Canada — ships from our Winnipeg warehouse to Canadian and US destinations, avoiding cross-border lead times for Canadian utility and treatment buyers.
What's in Each Kit
Per LMI's published specifications, each kit includes: shaft seal, Liquifram™, seal ring seats, clamp rings, balls, and spring(s).
In plain language, that means each box contains the wear components needed to restore one liquid end:
- Shaft seal — the seal that prevents chemical from leaking past the drive shaft into the pump body
- Liquifram™ diaphragm — LMI's name for the flexing membrane that displaces chemical on each pump stroke
- Seal ring seats — the sealing surfaces inside the suction and discharge check valves
- Clamp rings — compression rings that hold the tubing connections
- Ceramic check valve balls — the chemically resistant balls that seat against the seal rings to prevent backflow between strokes
- Spring(s) — for the injection check valve assembly
How to Identify Your Kit
LMI labels each liquid end with an "LE-" designation printed on the wet-end housing or on the original equipment label. To pick the right rebuild kit:
- Locate the LE- designation on your pump's liquid end (typically on the side plate or original manual)
- Match the LE- number to the compatibility table below
- If the LE- designation isn't visible, contact our team with the pump's full model number and serial number. We'll cross-reference against LMI's RPM Legacy Model Number Matrix
Kit-to-Liquid-End Compatibility
Match your pump's LE- designation to the correct rebuild kit. All compatibility verified against authorized LMI distributor catalogs.
| Kit Number | Fits LMI Liquid Ends |
|---|---|
| SP-U1 | LE-81S, LE-81T, LE-82T, LE-85S, LE-85T, LE-91S, LE-91T, LE-92S, LE-92T, LE-94, LE-94S, LE-95S, LE-95T, LE-196, LE-196S |
| SP-U3 | LE-81FS, LE-91FS |
| SP-U7 | LE-190, LE-190S, LE-191, LE-191S, LE-192, LE-192S, LE-193, LE-193S, LE-198, LE-198S |
| SP-U8 | LE-150, LE-150S, LE-151, LE-151P, LE-151S, LE-152, LE-152S, LE-158 |
| SP-U17 | LE-12, LE-12S, LE-112, LE-112S, LE-118, LE-118S |
| SP-85HV | LE-85HV, LE-86PBA |
| SP-151FS | LE-151FS |
Not seeing your liquid end here? LMI's full SP-series catalog includes additional kits we can source on request (SP-U2, SP-U5, SP-U6, SP-U9, SP-U10, SP-U19, SP-77, SP-97, and others). Contact our team with your LMI pump's model number and serial number.
Applications
Operators and maintenance technicians use these kits to restore LMI legacy pumps deployed in:
- Municipal water disinfection (sodium hypochlorite chlorination)
- Wastewater treatment and effluent chlorination
- Cooling tower chemical feed (biocide, scale inhibitor, corrosion inhibitor)
- Boiler water treatment (oxygen scavenger, pH adjustment)
- Drinking water systems on small community wells and booster stations
- Industrial process water (alum, PAC, coagulant feed)
- Chemical dosing skids on legacy treatment plants
Why Choose Cleanflow for LMI Rebuild Kits
Cleanflow stocks LMI metering pump parts in Canada, with same-business-day shipping from our Winnipeg warehouse. Most US-based LMI distributors ship cross-border at extra cost and lead time. Cleanflow customers get genuine OEM rebuild kits, LMI-recommended kit contents, mix-and-match volume pricing across the LMI line, and a 30-day return window, all without import paperwork or exchange-rate complications.
Buy LMI Legacy Maintenance Rebuild Kits Online from Cleanflow
In stock and ready to ship from our Winnipeg warehouse, typically same- or next-business-day across Canada and the USA. Browse the full LMI Milton Roy chemical metering pump range and parts at Cleanflow.
Frequently Asked Questions
How do I know which SP kit fits my LMI pump?
Find the LE- designation printed on your pump's liquid end housing or original manual (for example, LE-81S or LE-150). Match it to the kit table above. If you can't find an LE- label, send us the pump's full model and serial number.
What's included in each LMI rebuild kit?
Each kit contains the wear components for one full liquid end rebuild: shaft seal, Liquifram™ diaphragm, seal ring seats, clamp rings, ceramic check valve balls, and spring(s).
How often should I rebuild my LMI metering pump?
LMI recommends replacing elastomeric components every year for maximum product reliability and accuracy. Real-world intervals depend on chemistry, pumps dosing sodium hypochlorite or aggressive acids may need more frequent rebuilds. If your LMI metering pump is leaking from the diaphragm, dosing inconsistently, or running with reduced output, it's time for a rebuild kit.
Can I rebuild a legacy LMI pump myself, or do I need a technician?
Most field operators rebuild LMI legacy pumps in-house. The wet-end teardown is straightforward: remove the head bolts, replace the diaphragm and check valve components, and reassemble. LMI publishes installation instructions for SP kits. If your pump has been in service over a decade or shows drive-side wear, contacting our team replacement may be more cost-effective than rebuilding.
Why is my LMI pump losing prime?
An LMI pump losing prime usually means the wet-end components have worn. The diaphragm has lost flex, the ceramic check balls are no longer seating cleanly, or the seal rings have degraded. Air or chemical leaks past these components on each stroke, so the pump can't pull a consistent draw from the supply tank. A rebuild kit replaces all of these components in one box.
What if my kit number isn't in your selector?
Cleanflow stocks the seven most commonly requested SP-U series kits. LMI's full catalog includes additional kits (SP-U2, SP-U5, SP-U6, SP-U9, SP-U10, SP-U19, SP-77, SP-97, and more). Contact our team with the kit number or liquid end ID and we'll quote the part with shipping from our authorized LMI supplier.
How does the LMI volume discount work?
Buy 2 LMI items for 2% off, 4 for 4% off, 8 for 5% off, or 10+ for 7% off mix and match across the entire LMI line. So if you need an SP-U1 and SP-U8 together, both count toward your tier. Contractor, utility, and wholesale account pricing is also available, contact our team for a quote.
✅ This item is normally regularly stocked. Shipping times may vary depending on availability. Please contact us to confirm stock and shipping times. You will receive tracking details once the item has shipped.
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