Home › Products › Impellers › Slurry Impeller

Slurry Impeller

Thick sections and few wide vanes — designed to wear out and be replaced.

Slurry Impeller

Thick sections and few wide vanes — designed to wear out and be replaced.

A slurry impeller is not trying to be efficient. Fewer vanes means wider passages and less surface for abrasive to attack; thick sections mean there is material to lose before the geometry stops working.

It is a consumable, and it is quoted as one. The useful question is not how long it lasts but how quickly a replacement arrives — which is why we hold the tooling rather than re-making it for each order.

Casting process	Vertical-line sand moulding on two lines (national patent)
Materials	Grey iron · ductile iron · WCB carbon steel · CF8M stainless
Machined features	Bore and keyway · hub face · vane tip diameter · balance correction
Minimum order	100 pieces
Certification	EN 10204 3.1 per heat, spectrometer results
Source of geometry	Your drawing, 3D file or a worn sample

Get a Quote on This Part

Casting Notes

What Is Difficult About This One

Every casting has one or two features that decide whether the batch repeats. On this part they are these.

Thick everywhere, so feeding is the job

Heavy sections shrink. Risers and their placement do more for this casting than anything else in the process.

Fewer vanes, larger fillets

Wide radii at the vane roots — the sharp corner that survives on a clean-water impeller is an erosion site here.

Hardness follows the alloy

Within the four alloys we run, the harder options wear better and machine worse. Which one is right is a duty question, and we will say what we think.

Materials

Alloy Options

The same geometry is a different part in three different plants. Chloride content, abrasion and temperature drive the choice — not the name of the fluid.

Alloy	Grade	When it is the right choice
Grey iron	HT200 / HT250	Default for water duty. Damps vibration, machines easily, lowest cost.
Ductile iron	QT450 / QT500	When the duty is cyclic or the part takes shock. Tougher than grey.
WCB carbon steel	ASTM A216 WCB	Higher strength, weldable. For pressure-bearing bodies.
CF8M stainless	ASTM A743 CF8M	Chloride and corrosion duty — the cast equivalent of 316.

Enquiry

What to Send Us

These are the ones specific to this part. A drawing, a 3D file or the worn original covers all of them at once.

Item	Why it matters
What is in the slurry	Particle size, hardness and concentration — all three
Current impeller life	What you are getting now, and what you need
Shaft diameter and key size	Bore and keyway