High-Head Gravel Sand Pump — SGH Series

The SGH is the high-head variant of the gravel-pump range for greater lift at large particle size; part of the 36–4320 m³/h / 5–80 m / 60–1200 kW SG/SGH family, particle to 254 mm.

SGH high-head gravel sand pump set being lifted in the workshop, heavy casing and drive end

SGH high-head gravel sand pump sets with lubrication pipework, prepared for despatch

SGH high-head gravel sand pump coupled to its drive motor on a common baseplate

SGH high-head gravel sand pump with drive motor on a fabricated baseplate

Continuous duty on coarse gravel, sand and tailings — the high-head build of our SG gravel pump range, for long discharge lines and high lift where the medium still carries large solids.

Three SGH sizes: 110–1000 L/s at 18–80 m head
Maximum particle 180–230 mm; SG range to 254 mm
Single-casing construction — no liner to break on coarse gravel
Discharge rotatable to any orientation
Wear materials A05 / A22 / A23 / A25 to duty

Request SGH Specs →Send Us Your Head & Particle

CE · EAC · ISO 9001 · ISO 14001 · ISO 45001

Overview

The SGH gravel pump is the high-head variant of the SG series. Where the SG models cover heads to about 66 m, the SGH models reach 78–80 m at the same solids-handling capability, which makes them the selection when the discharge line is long or the lift is high and the medium still carries coarse gravel.

Three SGH sizes are built: 10/8S-SGH, 12/10T-SGH and 16/14TU-SGH, covering 110–1000 L/s at 18–80 m head with maximum particle sizes of 180–230 mm.

Where the SGH Fits

10/8S-SGH — 110–360 L/s, 18–80 m, 500–950 r/min, 250/200 mm connections, particles to 180 mm. The highest head in the range.
12/10T-SGH — 170–620 L/s, 28–78 m, 350–700 r/min, 300/250 mm connections, particles to 210 mm. The widest usable head band with a high minimum head.
16/14TU-SGH — 200–1000 L/s, 20–72 m, 300–500 r/min, 400/350 mm connections, particles to 230 mm. The high-volume selection.

Efficiency across the three SGH sizes is quoted at 60–72 %, and NPSHr at 2–8 m depending on model and duty point.

SG and SGH gravel pump model selection chart — SG / SGH model selection chart — flow against head across the range.

Construction

The gravel pump uses a single-casing construction — there is no separate liner. Casing, cover and impeller are all cast in wear-resistant metal, so the full wall thickness is available as wear material rather than being split between a liner and an outer shell. On coarse gravel duty a liner is broken rather than worn, and the load then passes to a shell never intended to carry it.

Casing and cover are joined by a clamping arrangement, and the discharge can be rotated to any orientation, which simplifies pipework on a dredge or a mobile skid. The inlet is horizontal and the pump rotates clockwise viewed from the drive end.

Gravel pump cross-section showing single-casing construction — Single-casing cross-section — casing, cover and impeller in wear-resistant metal.

Gravel pump assembly and bearing arrangement — Assembly arrangement — clamped casing joint and rotatable discharge.

Component callouts — left drawing (belt / coupling drive)

1 — Fluid coupling
2 — Shaft seal assembly
3 — Joint plate
4 — Rear liner (frame plate liner insert)
5 — Casing
6 — Cover
7 — Throatbush (front liner)
8 — Split flange
9 — Pump support

Component callouts — right drawing (bare shaft assembly)

1 — Shaft
2 — Bracket
3 — Impeller removal ring
4 — Positioning sleeve
5 — Shaft seal assembly
6 — Joint plate
7 — Rear liner
8 — Casing
9 — Clamp band
10 — Cover
11 — Throatbush (front liner)
12 — Impeller
13 — Split flange

Callout numbers refer to the drawings above, which are reproduced from the manufacturer technical documentation.

Selecting Against Particle Size

Gravel duty is set by the largest solid, not by the average. Each model has a stated maximum particle diameter — 82 mm on the smallest through 254 mm on the largest SG size — and the pump must be selected so that the largest stone actually present will pass. Selecting on flow and head alone and ignoring particle size is the most common cause of blockage in this service.

Typical Applications

Coal preparation and coal gravel transfer
Power station gravel and ash handling
River dredging and desilting
River sand extraction and mining vessels
Municipal engineering and material transport
Mine tailings and coarse mineral transfer
Land reclamation and fill placement
Quarry and wash-plant duty

Installation Dimensions

Gravel pump overall and installation dimension drawing — Dimension reference — letters correspond to the tables below.

Drawing annotations

Pump weight — total mass of the bare pump
Discharge flange — outlet flange dimensions
Intake flange — inlet flange dimensions
Head dimensions — wet-end envelope
H.D. bolt holes — holding-down bolt pattern
Base dimensions — baseplate footprint
View X / View Y — sectional view directions marked on the drawing

The dimension drawing is reproduced from the manufacturer technical documentation; annotation labels are translated above.

More Pictures

Selection

Send the required flow and head, the largest particle size present, the solids concentration and the density of the medium, together with the drive arrangement and available speed. We will confirm the model from the tables above and issue the matching performance curve and certified dimension drawing.

Request SGH Specs →Send Us Your Head & Particle

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Performance data — SG and SGH series

Model	Capacity (L/s)	Head (m)	Speed (r/min)	Efficiency (%)	NPSHr (m)	Inlet dia. (mm)	Outlet dia. (mm)	Max. particle (mm)
6/4D-SG	10-70	3.5-51	600-1400	30-50	2.5-3.5	150	100	82
8/6E-SG	38-160	10-48	800-1400	50-60	3-4.5	200	150	127
10/8S-SG	60-272	13-50	500-1000	45-65	3-7.5	250	200	178
10/8F-SG	60-272	13-50	500-1000	45-65	3-7.5	250	200	178
12/10F-SG	100-420	11-58	400-850	50-70	2-4.5	300	250	220
12/10G-SG	100-420	11-58	400-850	50-70	2-4.5	300	250	220
14/12G-SG	140-880	6-66	300-700	60-68	2-8	350	300	241
18/16G-SG	240-1060	9-48	250-500	60-72	3-6	450	400	254
18/16T-SG	240-1060	9-48	250-500	60-72	3-6	450	400	254
10/8S-SGH	110-360	18-80	500-950	60-72	2-5	250	200	180
12/10T-SGH	170-620	28-78	350-700	60-72	2-8	300	250	210
16/14TU-SGH	200-1000	20-72	300-500	60-72	3-6	400	350	230

For preliminary selection only. Model-by-model performance curves are issued with the quotation.

Overall dimensions and weight (mm / kg)

Model	A	B	C	D	E	F	G	Weight (kg)
6/4D-SG	1006	492	432	213	38	330	289	460
8/6E-SG	1286	622	546	257	54	392	365	1120
10/8F-SG	1591	857	762	349	45	487	540	2250
12/10F-SG	1702	883	762	584	60	411	705	3320
10/8S-SG	1720	920	760	640	70	378	780	2285
12/10G-SG	2010	1207	851	749	64	473	876	4450
14/12G-SG	2096	1207	851	749	64	502	876	5400
18/16G-SG	2111	1207	851	749	64	503	876	6950
18/16T-SG	2607	1397	1194	921	102	703	1124	8850
10/8S-SGH	1774	920	760	640	70	455	780	3188
16/14TU-SGH	2375	1480	1200	860	95	649	1050	†

Installation and flange dimensions (mm)

Model	H	L	M	N	P	T	N-d	D1	D2	n-d1	D3	D4	n-d2
6/4D-SG	54	203	343	260	330	16	4-Φ22	260	305	8-Φ19	210	254	4-Φ19
8/6E-SG	75	295	405	352	457	54	4-Φ29	324	368	8-Φ19	260	305	8-Φ19
10/8F-SG	98	330	533	416	610	60	4-Φ35	406	457	8-Φ22	324	368	8-Φ19
12/10F-SG	98	368	667	522	610	—	4-Φ35	470	527	12-Φ22	406	457	8-Φ22
10/8S-SG	90	330	533	416	450	—	4-Φ35	406	457	8-Φ22	324	368	8-Φ19
12/10G-SG	152	368	665	522	851	238	4-Φ41	470	527	12-Φ22	406	457	8-Φ22
14/12G-SG	152	424	787	610	851	121	4-Φ41	495	552	8-Φ19	470	527	12-Φ22
18/16G-SG	152	432	914	692	851	—	4-Φ41	641	705	16-Φ28	584	641	†
18/16T-SG	222	432	914	692	1067	143	4-Φ67	641	705	16-Φ28	584	641	†
10/8S-SGH	90	330	620	473	450	—	4-Φ35	406	457	8-Φ22	324	†	8-Φ19
16/14TU-SGH	150	448	1010	765	900	—	4-Φ79	600	650	†	540	600	12-Φ28

— = not applicable for this model. † = flange bolting, diameter or weight confirmed at quotation. Letters correspond to the dimension drawing above. Dimensions are for guidance; certified drawings are issued with the order.

What is the difference between SG and SGH?

SGH is the high-head build. SG models cover heads to about 66 m; SGH models reach 78–80 m with the same coarse-solids capability. Flow ranges overlap, so the selection is usually decided by the head required.

How large a stone will the pump pass?

From 82 mm on the smallest SG size to 254 mm on the largest. The three SGH sizes pass 180, 210 and 230 mm. The maximum particle diameter for each model is listed in the performance table.

Is there a replaceable liner?

No. The gravel pump is single-casing: casing, cover and impeller are cast in wear-resistant metal with no separate liner, so the whole wall serves as wear material.

Can the discharge be rotated?

Yes. Casing and cover are joined by a clamping arrangement and the discharge can be set to any orientation, which simplifies installation and removal on dredges and mobile skids.

Which wear material should be specified?

A05 high-chrome white iron for high-impact abrasive wear at pH 5–12; A22 cast steel for dredge-type casings; A23 for high-erosion components; A25 where weld repair capability is required.

Do you supply performance curves?

The tables on this page are for preliminary selection. Model-by-model curves and certified dimension drawings are issued with the quotation and the order respectively.

Manufacturer-direct supply · Technical pump-selection support · Export documentation on request.