Why We Excel at Manufacturing Critical Pump Components
Interfaces Confirmed Before Metal Is Cut
Shaft fit, keyway, hub height, bolt pattern and register diameters are measured, not assumed. A bore 0.2 mm loose makes the rest of the part worthless.
Alloy Matched to the Service
Chloride content, abrasion and temperature drive the choice — not the name of the fluid. PMI on your sample tells us what the original actually was.
Balanced and Documented
Every rotating component is dynamically balanced to ISO 1940 and ships with the grade stated on a report, alongside the material certificate.
Built for Repeat Production
Minimum order quantity is 100 pieces. Twin vertical-line moulding is a batch process, and it is where the consistency between the first casting and the hundredth comes from.
What We Cast
Five families of sand castings covering the wet end and the structure around it.
Pump Casings & Volutes
Jet pump casings, square casings, long- and short-head casings, pump covers and flange components — sand cast to drawing and machined to the mating faces that must fit.
Bearing Housings & Brackets
Bearing housings including extended types, motor brackets and bearing covers — the structural castings that carry the rotating assembly.
Seal Glands & Covers
Mechanical seal glands and covers, cast and machined to the sealing faces and bolt patterns of the pump they serve.
Impellers
Semi-open, slurry and vortex impellers cast to your drawing or reverse-engineered from a worn sample.
View details ›
Custom Castings
Build to drawing, tooling development, reverse engineering from a sample and low-volume trial production.
Every Part We Cast
The individual castings inside those five families. If the part you need is not here, send the drawing or a photo of the worn one and we will tell you whether it is in range.
Square Casing
Squared outer shell for fixed-footprint booster sets
Volute Casing
Spiral scroll cast to the original profile
Jet Pump Casing
Self-priming jet casing with threaded port boss
Long-Head Casing
Extended nose barrel, higher head duty
Short-Head Casing
Compact envelope, shorter overall length
Pump Cover
Machined joint face and spigot register
Inlet / Outlet Flanges
Threaded and flanged connection castings
Bearing Housing
Machined bearing seats, oil sump, rigid foot
Extended Bearing Housing
Longer barrel, bearing centre further out
Motor Bracket
Lantern type with open windows to the shaft
Bearing Cover
Seal recess, spigot register, grease boss
Mechanical Seal Gland
Machined sealing face and bolt circle
Gland Cover
Stuffing-box neck with opposed studs
Closed Impeller
Both shrouds, highest efficiency
Semi-Open Impeller
Back shroud only, tolerates solids
Open Impeller
No shroud, vanes clear through
Vortex Impeller
Recessed, passes solids without contact
Double-Suction Impeller
Flow both sides, thrust balanced
Slurry Impeller
Thick sections, few wide vanes
Alloy Selection
The same geometry is a different part in three different plants.
| Alloy | EN / spec | Typical service |
|---|---|---|
| CF8M / 316SS | 1.4408 | General chemical duty, mild corrosives, water and wastewater |
| CD4MCu / CD4M | 1.4517 | Duplex — chloride and erosion resistance, seawater and slurry |
| CN7M / Alloy 20 | 2.4660 | Sulphuric acid and mixed acid service |
| WCB carbon steel | 1.0619 | Clean water, oils, general non-corrosive duty |
| Bronze C95800 / C90300 | — | Seawater, marine and fire pump components |
| High-chrome 27% Cr | A532 | Abrasive slurry, mine dewatering, ash handling |
Common Requests
The requests we see most often. Send the pump make and model with your enquiry and we will tell you straight away whether the part is in our range.
- Jet pump casing
- Square pump casing
- Long-head pump casing
- Short-head pump casing
- Pump cover casting
- Inlet and outlet flange parts
- Volute casing replacement
- Bearing housing casting
- Extended bearing housing
- Motor bracket casting
- Bearing cover
- Mechanical seal gland
- Gland cover casting
- Semi-open impeller
- Custom sand casting to drawing
Frequently Asked Questions
What casting method do you use for pump components?
Sand casting on a twin vertical-line moulding system covered by a national patent. It is the one route we run, and running one route well is why a batch repeats.
Can you work from a worn part instead of a drawing?
Yes — that is most aftermarket work. We measure the interfaces, reconstruct the vane profile and state on the quotation which dimensions came from the sample.
Which parts of the pump do you cast?
Casings and volutes, bearing housings and brackets, seal glands and covers, and impellers. Shafts and wear rings are outside our range — we say so up front.
What is the minimum order quantity?
Minimum order quantity is 100 pieces. Lead time depends on the part and the tooling situation — it is quoted per project rather than published as a blanket figure.