Product Overview

Traditional single-suction pumps suffer from high axial thrust, excessive vibration, and complex maintenance requiring full pipeline disassembly, increasing downtime and O&M costs in high-flow applications.

This series resolves these issues via a horizontally split-case, double-suction design with a statically balanced impeller and axial force self-balancing bearings. The top-access cover enables direct rotor inspection without disconnecting pipes or motors, while optional mechanical seals deliver high flow, low NPSHr, and reliable long-term operation.

Widely deployed in municipal water plants, industrial cooling, power generation, and large HVAC systems, it handles clean water ≤80℃ and abrasive media with customizable materials. Its rapid maintenance and stable performance establish a new industry benchmark for efficient split-case centrifugal pumps.

Product Advantages

Extended Service Life: Symmetrical double-suction impeller self-balances axial thrust with optimized bearings. Lifespan ≥15 years—35%+ longer than single-suction pumps.

Significant Energy Savings: Dual-suction inlet cuts flow velocity & NPSHr. Efficiency ≥85%, hydraulic losses ↓12–18%, reducing annual energy costs significantly.

Lower Maintenance Costs: Split-case cover with locating pins enables rotor extraction without pipe/motor disassembly. Seal/bearing inspection in 1.5h, cutting labor costs by 40%.

Lightweight & Compact Design: Streamlined cast iron casing + integrated base cuts footprint by 25%, reducing construction & lifting costs.

Faster Installation: Horizontally positioned ports + pre-aligned coupling enable stress-free pipe connection. Commissioning ready in 2h, accelerating deployment by 40%.

Application Scenarios

Municipal Water: Raw/clear water transport, main pipe boosting, stable high-flow supply.

Industrial Cooling: Power/chemical/metallurgical circulation, HVAC water loops, variable-flow energy saving.

Agriculture: Large-scale irrigation, river/reservoir lifting, sandy/muddy water compatible (wear-resistant options).

Public Facilities: Fire/AC water systems for stadiums/airports/data centers, low-noise, high environmental compliance.

Media: Clean water ≤80°C or similar. Sandy/muddy water: wear-resistant upgrades available. Packing/mechanical seal optional.

Technical Parameters

Product Structure Diagram

Type A Arrangement (Rolling Bearing)

	NO.	Component List	NO.	Component List
	1	Pump Casing	12	Gland
	2	Casing Cover	13	Sleeve Nut
	3	Shaft	14	Stud Bolt
	4	Impeller	15	Bearing Cover
	5	Double Suction Wear Ring	16	Bearing Spacer
	6	Key	17	Bearing Housing
	7	Shaft Sleeve	18	Set Screw
	8	Lantern Ring Sleeve	19	Bearing Housing Cover
	9	Gland Packing	20	Bearing
	10	Lantern Ring	21	Round Nut
	11	Gland	22	Coupling Assembly

Type B – Sleeve Bearing

	NO.	Component List	NO.	Component List
	1	Ball Bearing	8	Type A Housing / Type A Cover
	2	Type B Housing / Type B Cover	9	Type A Upper / Lower Bearing
	3	Type B Upper / Lower Shell	10	Vernier Scale
	4	Oil Ring	11	Vent Pipe
	5	Bearing Seal Ring	12	Small Check Valve
	6	Oil Deflector	13	Seal Flush Line
	7	Dowel Pin	/	/

Performance Data Table

Sh Series – Performance Data  1

Model	Flow (Q)		Total Head H (m)	Speed n (rpm)	Shaft Power P (kW)		Efficiency %	Max. Allowable Suction Lift	Impeller Diameter	Weight (kg)
	m³/h	L/s			Shaft Power	Motor Power
6Sh-6 150S78	126 162 198	35 45 55	84 78 70	2900	40 46.5 52.4	55	72 74 72	5	248	150
6Sh-6A 150S78A	112 144 180	31 40 50	67 62 55	2900	30 33.8 38.5	45	68 72 70	5	220	150
6Sh-9 150S50	130 170 220	36.2 47.2 61.2	52 47.6 35	2900	25.3 27.6 31.3	37	73.9 79.8 67	5	200	145
6Sh-9A 150S50A	120 144 180	31 40 50	43.8 40 35	2900	18.5 20.9 24.5	30	72 75 70	5	186	145
8Sh-6 200S95	180 234 288	50 65 80	100 93.5 82.5	2900	81.8 86.3 91.1	110	60 69 71	4.5	284	245
8Sh-6A 200S95A	160 215 265	44.5 59.7 73.6	85.1 75.6 70.2	2900	60.8 64.2 71.4	90	61 69 71	5.5	262	245
8Sh-9 200S63	213 288 351	60 80 97.5	69 62.5 50	2900	55 61.6 67.8	75	74 79.5 70.5	5.3 4.5 3	236	265
8Sh-9A 200S63A	180 270 324	50 70 90	54.5 46 37.5	2900	41 48.3 51	55	65 70 65	5.5 5.0 3.8	220	265
8Sh-13 200S42	216 288 342	60 80 95	48 41.3 35	2900	34.9 38.1 40.2	45	81 85 81	5.0 3.6 1.8	204	219
8Sh-13A 200S42A	198 270 310	55 75 86	43 36 31	2900-	30.5 33.1 34.4	37	76 80 76	5.2 4.2 3.0	193	219
10Sh-6 250S65	360 486 612	100 135 170	71 65.1 56	1450	88.1 112 129.6	132	77 72	6	460	565
10Sh-6A 250S65A	342 468 540	95 130 ·150	61 54 50	1450	72 86 98	110	79 80 75	6	430	565
10Sh-9 250S39	360 486 612	100 · 135 170	42.5 38.5 32.5	1450	55.5 61.5 67.7	75	75 83 80	6	367	428
10Sh-9A 250S39A	324 468 576	90 130 160	35.5 30.5 25	1450	40.2 45.7 47.8	55	78 85 82	6	338	428
10Sh-13 250S24	360 486 576	100 135 160	27 23.5 19	1450	33.1 36.2 36.4	45	80 86 82	6	296	420
10Sh-13A 250S24A	342 414 482	95 115 134	22.2 20.3 17.4	1450	25.8 27.6 28.6	37	80 83 80	6	270	420
10Sh-19 250S14	360 486 576	100 135 160	17.5 14 11	1450	21.4 21.8 22.1	30	80 85 78	6	240	405

Sh Series – Performance Data  2

Model	Flow (Q)		Total Head H (m)	Speed n (rpm)	Shaft Power P (kW)		Efficiency %	Max. Allowable Suction Lift	Impeller Diameter	Weight (kg)
	m³/h	L/s			Shaft Power	Motor Power
10Sh-19A 250S14A	320 432 504	89 120 140	13.3 11 8.6	1450	15.4 15.8 15.8	22	78 82 75	6	224	405
12Sh-6 300S90	590 792 936	164 220 260	98 90 82	1450	213 250 279	300	74 77.5 75	5.4 4.5 3.5	540	847
12Sh-6A 300S90A	576 755 918	160 210 255	86 78 70	1450	190 217 246	260	71 74 71	5.5 4.7 3.6	510	845
12Sh-6B 300S90B	540 720 900	150 200 250	57	1450	151 180 200	260	70 73 70	5.6 4.9 3.8	475	845
12Sh-9 300S58	576 792 972	160 220 270	65 58 50	1450	127.5 150 167.5	180	80 83.5 79	4.5	435	572
12Sh-9A 300S58A	530 720 893	147 200 248	55 49 42	1450	99.2 116 131	155	80 83 78	4.5	402	572
12Sh-9B 300S58B	504 684 835	140 190 232	47.2 43 37	1450	82.5 97.7 108	135	79 82 78	4.5	378	572
12Sh-13 300S32	612 792 900	170 220 250	38 32.2 25.5	1450	76.2 80.3 78.1	90	83 86.5 80.1	4.5	352	809
12Sh-13A 300S32A	550 720 810	153 200 225	31 26 20.5	1450	58.1 60.7 58	75	80 84 78	4.5	322	809
12Sh-19 300S19	612 792 935	170 220 260	23 19.4 14	1450	47.9 51 47.6	55	80 82 75	4.5	290	660
12Sh-19A 300S19A	504 720 900	140 200 250	20 16 11.5	1450	34.8 38.3 37.6	45	79 82 75	4.5	262	660
12Sh-28 300S12	611 792 900	170 220 250	14.5 12 10	1450	30.3 32 33.1	37	80 81 74	4.5	248	660
12Sh-28A 300S12A	522 685 792	145 190 220	11.8 10 8.7	1450	22.4 23.3 24.4	30	75 80 77	4.5	225	660
14Sh-6 350S125	850 1250 1663	236 347 461	140 125 100	1470	462 545 625	680	70 78 72.5	3.5	655	1580
14Sh-6A 350S125A	800 1180 1570	223 328 436	125 112 90	1470	391 462 550	630	70 78 70	3.5	620	1580
14Sh-6B 350S125B	745 1100 1460	207 305 405	108 96 77	1470	313 373 422	500	70 77 72.5	3.5	575	1580

Sh Series – Performance Data  3

Model	Flow (Q)		Total Head H (m)	Speed n (rpm)	Shaft Power P (kW)		Efficiency %	Max. Allowable Suction Lift	Impeller Diameter	Weight (kg)
	m³/h	L/s			Shaft Power	Motor Power
14Sh-9 350S75	972 1260 1440	270 350 400	80 75 65	1450	271 314 319	400	78 82 80	3.5	500	1200
14Sh-9A 350S75A	900 1170 1330	250 325 370	70 65 56	1450	220 247 257	300	78 84 79	3.5	465	1200
14Sh-9B 350S75B	826 1080 1225	230 300 340	59 55 47.5	1450	178 198 206	260	75 82 77	3.5	428	1200
14Sh-13 350S44	972 1260 1480	270 350 410	50 43.8 37	1470	164 179 188	220	81 84 79	3.5	410	1105
14Sh-13A 350S44A	864 1120 1330	240 310 370	41 36 30	1470	121 130 136	180	80 84 80	3.5	380	1105
14Sh-19 350S26	971 1260 1440	270 350 400	32 26 22	1450	99.7 102 95.7	132	85 88 82	3.5	350	880
14Sh-19A 350S26A	864 1120 1296	240 310 360	26 21.5 16.5	1450	76.5 77 80	110	80 85 73	3.5	326	880
14Sh-28 350S16	971 1260 1440	270 350 400	20 16.2 13.4	1450	66.2 68.5 71	75	80 81 74	3.5	290	760
14Sh-28A 350S16A	864 1044 1260	240 290 350	16 13.4 10	1450	51 48.8 49	55	74 78 70	3.5		760
20Sh-6 500S98	1450 2016 2300	403 560 640	108 98.4 89	970	585 680 735	800	72.5 79.5 76	4	860	4330
20Sh-6A 500S98A	1349 1870 2140	375 520 595	93 85 77	970	490 564 607	630	70 7	3.6	800	4330
20Sh-9 500S59	1150 2016 2450	430 560 680	66 59 50	970	340 390 433	500	82 83 77	4	682	2750
20Sh-9A 500S59A	1405 1910 2270	390 530 630	58 50 42	970	300 347 360	400	74 75 72	4	640	2750
20Sh-9B 500S59B	1763	490	42	970	273	355	74	4	600	2750
20Sh-13 500S35	1550 2016 2410	430 560 670	40 35.1 30	970	206 219 247	280	82 88 80	4	550	2340
20Sh-13A 500S35A	1870	520	31	970	186	240	85	4	510	2340

Sh Series – Performance Data  4

Model	Flow (Q)		Total Head H (m)	Speed n (rpm)	Shaft Power P (kW)		Efficiency %	Max. Allowable Suction Lift	Impeller Diameter	Weight (kg)
	m³/h	L/s			Shaft Power	Motor Power
20Sh-19 500S22	1620 2016 2340	450 560 650	27 22 15	970	148 147 137	180	80 82 70	4	465	2010
20Sh-19A 500S22A	1296 1870 2016	360 520 560	23 17 14	970	111 108 101	130	73 80 76	4	427	2010
20Sh-28 500S13	1620 2016 2325	450 560 646	15.2 12.8 10.6	970	78.9 79 78	110	85 89 86	4	390	2000
24Sh-9 600S75	3420	950	71	960	727	900	91	1.3	765	4300
24Sh-9A 600S75A	3168	880	61	960	585	710	90	2.5	710	4300
24Sh-9(J) 600S39	2700	750	39	730	319	380	90	4.8	765	4300
24Sh-13 600S47	2502 3168 3499	695 880 972	56 47.4 38	970	460 465 426	550	83 88 80	2.5	630	3200
24Sh-19 600S32	2480 3170 3960	700 880 1100	37 32 22	970	295 310 279	380	86 89 85	2.5	540	2550
24Sh-19A 600S32A	2304 2880 3600	640 800 1000	31.5 27 20	970	235 238 231	280	84 89 85	2.5	500	2550
24Sh-28 600S22	2340 2880 3420	650 800 950	23.5 21 18	970	187 195 207	250	80 84.5 81	2.5	450	2500
24Sh-28A 600S22A	2340 2880 3420	650 800 950	17.5 15.5 13	970	145 148 154	185	77 82 78.5	2.5	415	2500
32Sh-19 800S32	4700 5500 6010 6460	1305 1530 1670 1795	35 32.5 28.9 25.4	730	575 580 567 567	630	78 84 83.5 80.4	3.5	740	5100
32Sh-19A 800S32A	4550 5310 5800 6250	1260 1475 1600 1735	31 29 26.5 23	730	492 500 496 487	560	78 84 83.5 80.4	3.5	715	5100

Operating Conditions

Media:

Type: Clean water / Similar liquids / Sandy-muddy water (wear-resistant options)

Solids: General suspended solids (no large particles/fibers)

Temperature:

Media: ≤80°C (≤176°F) • Ambient: ≤40°C (≤104°F)

Bearing & Lubrication:

Type A: Rolling bearing, grease-lubricated

Type B: Sleeve bearing, oil-lubricated

Packing drip: ~1 drop/min

Installation:

Suction/Discharge: Horizontal suction; H/V discharge optional

Foundation: Horizontal install; ≥600mm (≥24″) maintenance clearance

Note: Special conditions (high temp/corrosion/sand/explosion-proof)? Consult before selection. Custom solutions available.

Compliance & Certifications

National Standard Compliance: Strictly manufactured per GB 5657-1995 “Technical conditions for centrifugal pumps”. Hydraulic performance & mechanical safety 100% compliant. Third-party full performance curve test reports available.

Material & Environmental Certification: Cast iron/bronze/stainless steel wetted parts supplied with material certificates, compliant with RoHS/REACH directives, meeting multi-media transport compliance.

International Quality System: ISO 9001:2015 certified. Core pressure-bearing components evaluated per CE/PED 2014/68/EU, meeting EU/US market entry requirements.

Factory Inspection Standard: Every unit undergoes 1.5× rated pressure hydrostatic test (5-min hold) + impeller static balance calibration + packing drip rate test (1 drop/min), guaranteeing zero-defect delivery.

OEM & CUSTOM

Fast Standard Delivery: Covers standard high-flow applications. Standard cast iron body + soft packing seal + Type A/B bearing configuration. Technical confirmation & sample prototyping within 72 hours.

Deep Customization Capabilities:

Material Upgrade: Impeller/seal ring/sleeve optional in bronze, 304/316 stainless steel, or wear-resistant alloys for sandy-muddy or mildly corrosive media.

Seal & Bearing: Optional mechanical seals (zero-leakage), rolling/sliding bearing conversion, Type B independent oil-lubrication temperature control.

Structural Adaptation: Clockwise/counter-clockwise rotation switching, inlet/outlet orientation adjustment, belt drive replacement, outdoor rain/dust-proof canopy.

Intelligent Expansion: Pre-wired vibration/temperature sensor interfaces; supports condition monitoring, IoT remote inspection, multi-pump parallel control.

Please contact us for customization inquiries. Our engineering team delivers process proposals within 48 hours.

Installation Guidelines

Installation Key Points:

1.Clean base, level with spirit level (wedge iron allowed). Grout anchor bolt holes. Re-tighten & re-check levelness after curing.

2.Provide independent supports for inlet/outlet pipes. Never use pump body as support. Install debris screen at inlet, gate valve at outlet.

3.Maintain coupling gap per spec. Measure outer circle deviation ≤0.1 mm (up/down/left/right), end gap deviation ≤0.3 mm (full circle). Use thin shims for concentricity.

4.Adjust packing gland to 1 drip/min leak rate (prevent overheating/wear). Before startup, manually rotate shaft 3 turns to confirm smooth, friction-free operation.

Commissioning Process: Close outlet gate valve → Prime & vent pump → Start motor → Open pressure gauge cock → After normal RPM, gradually open outlet valve to required duty → Record current/pressure/vibration/bearing temp → Acceptance.

Request the “Sh Series Horizontal Split-Case Centrifugal Pump Installation & Maintenance Manual” (PDF/English version) for complete dimensional drawings, assembly diagrams, and commissioning logs.

FAQs

Q1: How does symmetrical double-suction impeller eliminate axial thrust?

Dual-side symmetrical inlet cancels out water pressure on both sides. Residual manufacturing error axial force is auto-balanced by single-row radial bearing in Type B bearing, significantly reducing bearing load.

Q2: How does horizontal split-case design enable “maintenance without disconnecting pipes”?

Pump cover fixed to body with bolts & locating pins. After removing upper cover, rotor assembly (impeller/shaft/bearings) is fully exposed without disturbing inlet/outlet pipes or motor.

Q3: Why must packing seal drip rate be controlled at 1 drop/min?

Drip rate provides cooling & lubrication. Over-tightened gland causes sleeve friction overheating & accelerated wear; too loose causes excessive leakage. 1 drop/min is the optimal balance for sealing & cooling.

Q4: What is the difference between Type A and Type B bearing structures?

Type A uses rolling bearings + grease lubrication for easy maintenance; Type B uses sliding bearings + thin oil for higher load capacity. Type A pressure cover lacks interchangeability (machined post-assembly).

Q5: What does model “10Sh-13A” mean?

10 = suction diameter 250mm (10×25); Sh = single-stage double-suction centrifugal pump; 13 = specific speed 130 (13×10); A = first impeller trimming. Enables precise duty matching.

Fill out my Wufoo form!