KLS Series Single-stage Double-suction Split-case Pump | KLS350-630 to KLS800-990

KLS Series Single-stage Double-suction Split-case Pump | KLS350-630 to KLS800-990 | Kenda Pump

SPECIFICATIONS:
Discharge Diameter: DN 80 ~ 800 mm
Flow Rate Range: 83.5 ~ 9810 m³/h
Head Range: 13.8 ~ 160 m
Operating Temperature: +1℃ ~ +80℃
Inlet Pressure: Up to 0.6 MPa (depending on material)
Looking for a high-efficiency Single-stage Double-suction Split-case Pump? The KLS Series features a robust split-case design, ideal for heavy-duty water transport. View specs & get a quote today!

Description
Inquiry

Kenda KLS series single-stage double-suction split-case pump is a new generation of products developed by integrating advanced international double-suction pump technology with high-efficiency hydraulic models. Designed for municipal water supply, HVAC cooling systems, and industrial irrigation. Its axially split casing allows for easy access to internal components without disturbing piping—perfect for reducing downtime in critical applications.

Technical Advantages

Easy Maintenance: Featuring a horizontally split-case design, it allows for internal inspections and parts replacement without dismantling the inlet/outlet pipelines or the motor.

Smooth Operation: The symmetrical double-suction impeller design theoretically balances axial forces automatically, resulting in low vibration and noise during operation.

Flexible Configuration: Supports both horizontal and vertical installation (for small models); sealing options include packing seals or mechanical seals; the direction of rotation can be customized upon request.

Long Service Life: The shaft is completely sealed and does not come into contact with the medium, effectively preventing corrosion and significantly extending the operating life.

Product Classification

Based on the medium being transported, the KLS series offers three professional configurations:

Standard Type: Designed for clean water and pure liquids with physical and chemical properties similar to clean water.

Wear-resistant Type: Specially engineered for silty rivers and water with high sand content (solid particles ≤ 80mg/L), offering higher efficiency and enhanced wear resistance.

Corrosion-resistant Type: Utilizes specialized corrosion-resistant materials and mechanical seals, suitable for transporting various chemically corrosive liquids.

Structure

Horizontal Structure Diagram for Small KLS Pumps (KLS350-630 to KLS800-990)

1	Bearing Assembly (B)	7	Impeller Spacer Sleeve	13	Impeller Key	19	Shaft Sleeve Key
2	Packing Gland	8	Seal Flushing Pipe Assembly	14	Stuffing Box Bushing	20	Bearing Housing
3	Pump Casing	9	Casing Wear Ring	15	Shaft Sleeve (A)	21	Drive Key
4	Lantern Ring	10	Impeller	16	Gland Packing	22	Coupling Assembly
5	Shaft	11	Pump Cover	17	Shaft Sleeve (B)	23	Mechanical Seal Assembly
6	Stuffing Box Bushing	12	Air Vent Pipe Assembly	18	Bearing Assembly (A)	24	Mechanical Seal Gland

Quick Selection Chart

KENDA KLS series single-stage double-suction split-case pump Performance Curve Chart - Flow vs Head selection guide for split-case pump.

Technical Specifications Chart

NO.	Type		Capacity		Head	Speed	Motor power	Eff.	(NPSH)r	Weight
			m³/h	l/s	(m)	(r/min)	(kW)	(%)	(m)	(kg)
1	350-630		1296	360	140	1480	1000	85	6.9	2630
			2160	600	126
			2592	720	116
2		A	1290	358.3	128		900	84
			2000	556	116
			2400	666	106
3		B	1185	329	118		800	83.5
			1920	533.3	106
			2304	640	96
4		C	1110	308.3	107.8		710	83.5
			1830	508.3	95.6
			2196	610	85
5		D	1050	291.7	93.8		560	82
			1695	470.8	83
			2200	611	68
6	400-560		1535	426	98	1480	800	85	7	2700
			2635	732	86
			3420	950	70.8
7		A	1102	306	81.8		710	83
			2430	675	60
			3500	972	42
8		B	750	208	73.2		630	81
			2232	620	50
			2851	792	36.8
9		C	504	140	61.2		630	79
			2070	575	38
			2350	653	33.1
10		D	1380	383	69		560	77
			2237	621	57.8
			2950	806	43.8
11	400-600		1919	533	129.7	1480	1250	86	7.5	2930
			3177	882	113
			4100	1139	93.6
12		A	1780	494	119		1120	84
			3007	835	103.6
			3910	1086	83.6
13		B	1740	483	109.2		1000	82
			2922	812	93
			3800	1056	70.8
14		C	1600	444	99.8		900	80
			2732	759	83.7
			3550	986	63
15		D	1530	425	90		800	78
			2642	706	74
			3380	939	57
16	500-520		1900	528	33.2	980	280	87	4.8	3040
			3218	894	25
			3960	1100	17.7
17		A	1830	508	30.5		250	86
			3088	858	23
			3800	1056	16.3
18		B	1750	486	28.6		220	84
			2964	823	21
			3650	1014	15.3
19		C	1680	467	26		200	82
			2846	791	18.4
			3485	968	13
20		D	1600	444	23.8		180	80
			2732	759	16.3
			3180	883	11.7
21	500-650		1850	514	52.5	980	500	88.5	5.7	3450
			3510	975	41.5
			4500	1250	31
22		A	1800	500	49.8		450	86
			3353	931	38.7
			4230	1175	28.5
23		B	1740	483	46.4		400	84
			3173	881	36
			4000	1112	26.5
24		C	1660	461	42.2		355	82
			3015	838	33.2
			3830	1064	25
25		D	1560	433	37.6		315	80
			2768	769	29.7
			3600	1000	21.8
26	500-710		2300	639	73.1	980	900	88.5	5.8	4450
			3852	1070	64.4
			5040	1400	54
27		A	2200	611	67.2		800	87
			3672	1020	59.2
			4840	1344	47.1
28		B	2100	583	60.3		710	85
			3470	964	53
			4320	1200	43
29		C	2000	556	56.4		560	83
			3204	890	47.7
			3960	1100	39
30		D	1920	533	50		500	81
			3024	840	42
			3550	986	34.2
31	500-800		2590	719	88.7	980	1120	89	6.9	5230
			3996	1110	80.6
			5190	1442	67.9
32		A	2460	683	78.4		900	87
			3600	1000	72.8
			4680	1300	61.8
33		B	2340	650	69.8		800	85
			3204	890	65.3
			4100	1139	57
34		C	2200	611	61		630	83
			2880	800	58
			3600	1000	52
35	500-860		2520	700	124	980	1600	89	6.9	7000
			4183	1162	111.2
			5440	1511	96.2
36		A	2380	661	112.4		1400	87
			3996	1110	100.7
			5140	1428	86
37		B	2250	625	102.4		1250	83
			3780	1050	90.4
			4870	1353	77.5
38		C	2115	587	90.4		1120	80
			3528	980	80.4
			4320	1300	70.6
39	600-560		3140	872	31.9	980	400	87	6	4850
			4716	1310	24.2
			6100	1694	14.3
40		A	2970	825	28.5		355	85
			4428	1230	21.5
			5670	1575	13.1
41		B	2790	775	23.8		250	83
			4046	1124	17.8
			5054	1460	11
42		C	2620	728	20.2		220	81
			3787	1052	15.4
			4860	1350	10
43	600-630		3170	881	47	980	630	88	7.8	4440
			4736	1316	39
			5940	1650	30
44		A	2980	828	40.8		560	86
			4420	1230	34.1
			5580	1550	26
45		B	2800	778	34.6		450	84
			4080	1133	29.1
			5040	1400	23.2
46		C	2630	731	29		355	80
			3755	1043	24.8
			4450	1236	20.2
47	600-710		2915	810	68.8	980	900	89	6.5	4570
			4630	1286	58.4
			6050	1680	43.4
48		A	2740	761	60		800	87
			4320	1200	50
			5680	1578	36
49		B	2595	721	52.4		630	85
			4050	1125	43
			5220	1480	31.2
50		C	2425	674	43.8		500	83
			3752	1042	35.2
			4680	1300	26.8
51	600-860		3750	764	702	980	1600	89	8.5	7050
			5538	1538	87.5
			6910	1919	70
52		A	3525	949	91		1400	87
			5109	1419	77
			6490	1803	58
53		B	3300	917	78		1120	85
			4680	1300	65.5
			5750	1597	53
54		C	3000	833	65		900	83
			4355	1209	56
			5050	1403	46
55	700-600		4265	1185	37.8	980	710	87	8.2	607
			6568	1824	29.8
			8100	2250	22.6
56		A	4180	1161	34.4		630	85
			6322	1756	27.8
			7840	2178	21.2
57		B	3970	1103	31.3		560	83
			6048	1680	25.9
			7450	2069	20.9
58		C	3770	1047	28.8		500	81
			5895	1637	24
			7000	1944	20
59	700-710		3650	1014	58.5	980	1000	87	8	8000
			6516	1810	43.5
			8470	2353	28.2
60		A	3500	972	54.5		900	85
			6278	1744	40.2
			8050	2236	26.2
61		B	3360	933	50.4		800	83
			5971	1659	36.8
			7560	2100	25.2
62		C	3225	896	45		710	81
			5742	1595	31.8
			7130	1981	22.8
63	700-800		4680	1300	93	980	2000	89	8.8	9120
			7416	2060	79.6
			9850	2736	58
64		A	4425	1229	81.8		1600	87
			6959	1933	67.8
			9180	2550	48
65		B	4200	1167	70.8		1400	85
			6552	1820	58
			8420	2339	42.8
66		C	3950	1097	59		1000	83
			6012	1670	47.5
			7520	2086	36
67	800-800		5870	1631	36.6	730	800	87	7	8540
			9090	2525	26.8
			11000	3056	18.2
68		A	5575	1509	33.6		710	85
			8622	2395	24.3
			10370	2881	16.3
69		B	5295	1471	30.9		710	83
			8280	2300	22.3
			9890	2736	14.8
70		C	5030	1397	28.2		560	81
			7860	2183	19.8
			9290	2581	13.5
71	800-900		6375	1771	53.8	730	1400	88	6.3	9940
			9023	2506	45.8
			11620	3228	34.6
72		A	6120	1700	50		1250	86
			8658	2405	42.2
			11160	3100	32.2
73		B	5815	1615	45.4		1120	84
			8262	2295	38.5
			10600	2944	29.6
74		C	5550	1542	41.5		1000	80
			7884	2190	35.4
			10120	2811	27
75		D	5270	1464	37		900	80
			7452	2070	32.2
			9620	2672	24.5
76	800-990		6600	1833	73.8	730	2000	89	6.7	11710
			9810	2725	62.5
			11660	3239	51.2
77		A	6335	1760	66		1800	87
			9300	2583	55.3
			11090	3081	45.3
78		B	6080	1689	59.5		1600	85
			8892	2470	49.4
			10400	2889	41.2
79		C	5770	1603	53.8		1400	83
			8525	2368	44.3
			9685	2690	38.8

Click here to view the specifications for Split-case Pump models KLS80-210 to KLS350-510.

Installation and Maintenance Guide

Outline dimensions of large KLS pumps (KLS350-630 to KLS800-990)

Large KLS Pump Dimensions Table (Unit: mm)

Pump Model			Flange Size							Dimension																													Weight (kg)
			DN1		DN2	S1		S2		B1		B2			e		f	h1		h2		h3		h4		I1		I2		I3		b1		b2		b3		b4
350-630			400		350	38		36		740		670			660		860	775		515		460		460		615		675		1040		320		580		255		315	2630
400-560			500		400	46		40		750		700			685		865	820		500		460		460		675		725		1130		420		670		275		325	2700
400-600						42		38		800		700			690		905	850		530		490		490		675		775		1130		420		670		275		375	2930
Motor Poles	Model			Motor Model			Motor Power (Kw)		I4		I5		b5	b6		b7			b8		h5		h6		u1		u2		u3		u4		t1		t2		p			Motor Weight (kg)
4		400-560		400			355		580		435		330	765		1040			1765		400		1435		130		300		565		130		220		300		1980			2500
				450			400																																	2600
				450			450		650		520		350	800		1156			1920		450		1585						600		150						2180			3320
				450			500																																	3390
	400-600			450			560																																	3470
				450			630																																	3600
				500			710				595			855					2105		500		1775						655								2550			4200
				500			800																																	4350
				500			900																																	4500
				500			1000																																	4680
				500			1120																																	4780
				560			1250		830		710		370	890		1370			2290		560		1970						690		170						3200			6200
4	350-630			400(6kv)			355-560		580		435		330	765		1040			1765		400		1435		130		260		565		130		220		300		1980			2500-2900
				450(6kv)			630-690		650		520		350	800		1156			1920		450		1585		130		260		600		150		220		300		2180			3550-3960
				500(6kv)			1000		650		595		350	855		1156			2105		500		1775		130		260		655		150		220		300		2550			4480

Pump Model			Flange Size							Dimension																													Weight (kg)
			DN1		DN2		S1	S2		B1	B2			e		f		h1		h2		h3	h4		I1		I2		I3		b1		b2		b3		b4
500-520			600		500		48	42		850	550			770		975		900		560		475	475		460		610		1250		520		820		140		290		3040
500-650										850	800			850		1065		920		600		495	495		660		660		1260		520		820		340		340		3450
500-710										1050	850			835		1035		1000		620		550	620		710		810		1320		480		880		390		490		4450
500-800										1000	900			850		1125		1050		660		600	600		760		860		1360		535		920		440		540		5230
500-860										1050	950			870		1160		1100		710		650	650		810		910		1260		560		820		490		590		7000
Motor Poles	Model					Motor Model			Motor Power (Kw)			I4	I5		b5		b6		b7		b8		h5	h6		u1		u2		u3		u4		t1		t2		p		Motor Weight (kg)
6				500-520		315M			110			268	237		320		340		828		677		315	965		120		120		220		120		220		300		1340		1100
						315L			132				258				350				858									250										1165
		500-650				3555)			220			500	335		330		765		960		1665		355	1345						565		130						1890		2100
						3556			250																															2300
						4002			280			580	435						1040		1765		400	1435														1980		2500
						4003			315																															2580
				500-710		4004			355																															670
						4005			400																															2800
						4501			450			650	520		350		800		1150		1920		450	1585						600		150						2180		3500
						4502			500																															3620
		500-800				4503			560																															3740
						4504			630																															3860
						5001			710																															4400
	500-860					5002			800				595				855				2150		500	1780						655								2550		4600
						5003			900																															4850
						5004			1000																															5350
						5601			1120																															6300
						5602			1250			830	710		370		890		1370		2290		560	1950						690		170						2900		6600
						5603			1400																															7000
						6301			1600			930	830		390		970		1510		2570		630	2150						770		190						3100		7600

Pump Model			Flange Size					Dimension															Weight (kg)
			DN1		DN2	S1	S2	B1	B2	e	f	h1	h2	h3	h4	I1	I2	I3	b1	b2	b3	b4
600-560			700		600	54	48	1100	900	835	1030	1100	750	610	610	800	900	1200	400	700	400	500	4850
600-630								1000	1000	790	1010	1050	650	545	545	900	900	1230	400	730	500	500	4440
600-710								1000	1100	880	1130	1050	650	545	545	900	900	1370	570	870	500	500	4570
600-860								1100	1200	950	1225	1100	760	580	580	1000	900	1350	570	850	600	500	7050
Motor Poles	Model				Motor Model		Motor Power (Kw)		I4	I5	b5	b6	b7	b8	h5	h6	u1	u2	u3	u4	t1	t2	p	Motor Weight (kg)
6					315L		160		268	237	320	340	828	667	315	1650	150	300	220	120	220	300	1430	1100
					355		200			258		350		858	355				250					1820
					3555		220		500	335	330	765	960	1665	355	1345			565	130			1890	2100
				600-560	3556		250																	2300
					4002		280		580	435			1040	1765	400	1435							1980	2500
					4003		315																	2580
					4004		355																	2670
		600-710			4005		400																	2800
				600-630	4501		450		650	520	350	800	1150	1920	450	1585			600	150			2180	3500
					4502		500																	3620
	600-860				4503		560																	3740
					4504		630																	3860
					5001		710			595		855		2105	500	1780			655				2550	4400
					5002		800																	4600
					5003		900																	4850
					5004		1000																	5350
					5601		1120		830	716	370	890	1370	2290	560	1950			690	170			2990	6300
					5603		1400																	7000
					6301		1600		930	830	390	970	1510	2570	630	2150			770	190			3100	7600

Pump Model			Flange Size					Dimension															Weight (kg)
			DN1		DN2	S1	S2	B1	B2	e	f	h1	h2	h3	h4	I1	I2	I3	b1	b2	b3	b4
700-600			800		700	58	54	1300	800	1040	1250	1150	720	600	600	700	100	1350	550	850	550	550	6070
700-710								1200	1150	1080	1310	1170	750	620	620	1000	1000	1350	550	850	550	550	8000
700-800								1250	1250	1110	1390	1200	850	650	650	1050	1050	1370	550	870	600	600	9120
Motor Poles	Model				Motor Model		Motor Power (Kw)		I4	I5	b5	b6	b7	b8	h5	h6	u1	u2	u3	u4	t1	t2	p	Motor Weight (kg)
8				700-560	400		315		580	435	330	765	1040	1756	400	1435	150	350	565	130	250	300	1980	2580
					400		355																	2670
					400		400																	2800
		700-710			450		500		650	520	350	800	1150	1920	450	1585			600	150			2180	3620
					450		560																	3740
					450		630																	3860
					500		710			595		855		2105	500	1740			533				2550	4400
	700-800				500		800																	4600
					500		900																	4850
					500		1000																	5350
					560		1120		830	710	370	890	1370	2290	560	1965			690	170			320	6300
					560		1400																	6600
					630		1600		930	830	390	970	1510	2570	630	2170			770	190			3460	7600
					630		2000																	8300

Pump Model			Flange Size					Dimension															Weight (kg)
			DN1		DN2	S1	S2	B1	B2	e	f	h1	h2	h3	h4	I1	I2	I3	b1	b2	b3	B4
800-800			900		800	62	58	1400	950	1130	1360	1380	920	770	770	850	1000	1450	650	950	350	500	8540
800-900								1400	1125	1130	1450	1360	900	770	770	1000	1050	1450	650	950	500	550	9940
800-990								1400	1300	1220	1530	1370	850	760	760	1100	1100	1450	650	950	600	600	11710
Motor Poles	Model				Motor Model		Motor Power (Kw)		I4	I5	b5	b6	b7	b8	h5	h6	u1	u2	u3	u4	t1	t2	p	Motor Weight ( kg)
8				800-800	450		400		650	520	350	800	1150	1920	450	1585			600	150			2180	3740
					450		450																	3860
					500		500			--		--		2105	500	1740			655				2550	4350
		800-900			500		560																	4550
					500		630																	4800
					500		710																	5250
					560		800		830	710	370	890	1370	2290	560	1965	150	400	690	170	250	300	3200	6300
	800-990				560		900																	6500
					560		1000																	6900
					630		1120		930	830	390	970	1510	2570	630	2170			770	190			3460	7500
					630		1250																	7800
					630		1400																	8200
					630		1600																	8500
					--		1800		--	--	--	--	--	--	--	--			--	--			--	--
					--		2000																--	--

Applications

The KLS Series is engineered for high-flow water transfer across diverse sectors:

Municipal: Urban water supply, boosting stations, and flood control.

HVAC: Cooling tower circulation and district heating systems.

Industrial: Process water for power plants, steel mills, and fire-fighting.

Agriculture: Large-scale irrigation and drainage projects.

FAQ

Q1: What are the maintenance benefits of the split-case design?

A: The axially split casing allows for easy access to internal components (impeller, bearings, seals) without disturbing the piping, significantly reducing downtime and maintenance costs.

Q2: Can this pump be installed vertically?

A: Yes. While horizontal is standard, the KLS series supports both horizontal and vertical configurations to suit your pump room layout.

Q3: What materials are available?

A: Beyond standard cast iron, we offer ductile iron, stainless steel (304/316), and bronze to handle corrosive or abrasive fluids.

Q4: Is it suitable for wastewater?

A: It is designed for clean water or liquids with similar properties. For fluids with minor solids, please contact us to customize the seal and material selection.

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