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RST Series Centrifugal End Suction Pump


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The RST series monoblock standardise pump is pipeline centrifugal pump End Suction Pump. It can be used in series or parallel configurations to meet head and flow requirements.

This electric pump consists of three main components: the motor, mechanical seal, and water pump. The motor is a single-phase or three-phase asynchronous motor. A mechanical seal is used between the pump and the motor. The pump rotor shaft is made of high-quality carbon steel and undergoes anti-corrosion treatment to ensure reliable mechanical strength, effectively improving wear and corrosion resistance. This design also facilitates impeller maintenance and disassembly.

Model:
RST
Brand:
SRM

Product Description

Performance Data

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For static sealing at fixed joints, the pump uses O-ring rubber seals to ensure leak-free performance.

Product Advantage

It features a compact structure, small size, sleek appearance, minimal installation footprint, stable operation, long service life, high efficiency, low energy consumption, and easy maintenance.

Technical Parameters

Liquid temperature between -10℃ and +120℃

Ambient temperature up to +50℃

Max. working pressure 16 bar

Continuous service S1

Options on request：

Special mechanical seal

Other voltages or frequency 60 Hz

Model Optional

Discharge size	Impeller Size
Discharge size	125	160	200	250	250D	315	400
32	SS304	SS304	SS304	Cast iron	SS304
40	Cast iron	Cast iron	SS304	Cast iron	/
50	Cast iron	Cast iron	Cast iron	Cast iron	/
65	Cast iron	Cast iron	Cast iron	Cast iron	/	Cast iron
80	Cast iron	Cast iron	Cast iron	Cast iron	/	Cast iron	Cast iron
00		Cast iron	Cast iron	Cast iron	/	Cast iron	Cast iron
25			Cast iron	Cast iron	/	Cast iron	Cast iron
50			Cast iron	Cast iron	/	Cast iron	Cast iron
200				Cast iron	/	Cast iron	Cast iron
250					/	Cast iron	Cast iron

Model	Power		Performance		Ports	Impeller	Weight	Dim
Model	(kw)	(hp)	Q m³/h	H m	(mm)	Impeller	(kg)	cbm
RST 32-125/7	0.75	1	12.5	13.5	50×32	SS304	27	0.045
RST 32-125/11	1.1	1.5	17	16	50×32	SS304	28	0.045
RST 32-160/15	1.5	2	15.5	21	50×32	SS304	35	0.049
RST 32-160/22	2.2	3	18.5	26	50×32	SS304	37	0.049
RST 32-160/30	3	4	19.5	28	50×32	SS304	41	0.053
RST 32-200/30	3	4	19.5	30	50×32	SS304	51	0.069
RST 32-200/40	4	5.5	24	32	50×32	SS304	53	0.069
RST 32-250/55	5.5	7.5	15	47	50×32	Cast iron	76	0.103
RST 32-250/75	7.5	10	15	55	50×32	Cast iron	78	0.103
RST 32-250/110	11	15	15	82	50×32	Cast iron	132	0.103
RST 32-250/55D	5.5	7.5	18	68	50×32	Double SS	83	0.103
RST 32-250/75D	7.5	10	19	80	50×32	Double SS	85	0.103
RST 40-125/11	1.1	1.5	25	11	65×40	Cast iron	36	0.045
RST 40-125/15	1.5	2	39	14	65×40	Cast iron	38	0.045
RST 40-125/22	2.2	3	36	16.5	65×40	Cast iron	40	0.045
RST 40-160/30	3	4	29	24	65×40	Cast iron	47	0.067
RST 40-160/40	4	5.5	35	29	65×40	Cast iron	49	0.067
RST 40-200/55	5.5	7.5	29	39	65×40	SS304	64	0.088
RST 40-200/75	7.5	10	35	46	65×40	SS304	69	0.088
RST 40-250/92	9.2	12.5	28	54	65×40	Cast iron	117	0.103
RST 40-250/110	11	15	31	60	65×40	Cast iron	132	0.103
RST 40-250/150	15	20	35	70	65×40	Cast iron	138	0.160
RST 50-125/22	2.2	3	50	12	65×50	Cast iron	49	0.068
RST 50-125/30	3	4	55	15	65×50	Cast iron	51	0.068
RST 50-125/40	4	5.5	60	18	65×50	Cast iron	54	0.068
RST 50-160/55	5.5	7.5	50	27	65×50	Cast iron	64	0.088
RST 50-160/75	7.5	10	60	32.5	65×50	Cast iron	71	0.088
RST 50-200/92	9.2	12.5	48	41	65×50	Cast iron	110	0.103
RST 50-200/110	11	15	60	45	65×50	Cast iron	125	0.103
RST 50-200/150	15	20	60	50	65×50	Cast iron	142	0.160
RST 50-250/150	15	20	50	60	65×50	Cast iron	143	0.160
RST 50-250/185	18.5	25	55	68	65×50	Cast iron	156	0.160
RST 50-250/220	22	30	60	75	65×50	Cast iron	164	0.160
RST 65-125/40	4	5.5	62	16	80×65	Cast iron	65	0.088
RST 65-125/55	5.5	7.5	74	19	80×65	Cast iron	71	0.088
RST 65-125/75	7.5	10	85	23	80×65	Cast iron	73	0.088
RST 65-160/92	9.2	12.5	62	30	80×65	Cast iron	100	0.103
RST 65-160/110	11	15	74	33	80×65	Cast iron	122	0.103
RST 65-160/150	15	20	85	38	80×65	Cast iron	137	0.164
RST 65-200/150	15	20	62	44	80×65	Cast iron	145	0.164
RST 65-200/185	18.5	25	74	50	80×65	Cast iron	158	0.164
RST 65-200/220	22	30	85	54	80×65	Cast iron	165	0.164
RST 65-250/220	22	30	62	60	80×65	Cast iron	195	0.218
RST 65-250/300	30	40	74	72	80×65	Cast iron	241	0.241
RST 65-250/370	37	50	85	83	80×65	Cast iron	310	0.241
RST 80-125/40	4	5.5	90	11.6	100×80	Cast iron	66	0.088
RST 80-125/55	5.5	7.5	90	16.5	100×80	Cast iron	72	0.088
RST 80-125/75	7.5	10	90	22.5	100×80	Cast iron	74	0.088
RST 80-160/110	11	15	130	22.5	100×80	Cast iron	128	0.103
RST 80-160/150	15	20	145	27	100×80	Cast iron	145	0.164
RST 80-160/185	18.5	25	160	31	100×80	Cast iron	156	0.164
RST 80-160/220	22	30	160	36	100×80	Cast iron	206	0.164
RST 80-200/220	22	30	130	42	100×80	Cast iron	208	0.218
RST 80-200/300	30	40	160	50	100×80	Cast iron	220	0.261
RST 80-250/370	37	50	130	63	100×80	Cast iron	299	0.257
RST 80-250/450	45	60	145	70	100×80	Cast iron	350	0.311
RST 80-250/550	55	75	160	82	100×80	Cast iron	394	0.401
RST 100-160/150	15	20	180	22	125×100	Cast iron	146	0.164
RST 100-160/185	18.5	25	180	27	125×100	Cast iron	157	0.164
RST 100-160/220	22	30	180	31	125×100	Cast iron	166	0.164
RST 100-200/220	22	30	150	41	125×100	Cast iron	210	0.218
RST 100-200/300	30	40	150	47	125×100	Cast iron	220	0.261
RST 100-200/370	37	50	150	53	125×100	Cast iron	305	0.257
RST 100-250/450	45	60	180	59	125×100	Cast iron	355	0.311
RST 100-250/550	55	75	180	71.5	125×100	Cast iron	398	0.401
RST 100-250/750	75	100	180	87	125×100	Cast iron	468	0.401

Product Uses

Here's a polished and professional version of your text with improved formatting and clarity:

Suitable for clean water and liquids that are not chemically aggressive to the pump's construction materials.

EN733 centrifugal pumps End Suction Pump are ideal for:

Water supply systems

Cleaning systems

Pressure boosting

Firefighting systems

Irrigation

Industrial applications

HVAC water circulation

Agricultural uses

Installation

1. The pump must be installed in a dry, cool, well-ventilated area where the ambient temperature does not drop below 0°C (frost-free). The diameter of the inlet pipe must not be smaller than that of the outlet pipe.

2. Before connecting the pump to the pipeline, verify the flow direction using the arrow marked on the pump casing. To ensure a sealed connection, install a rubber gasket or other sealing material between the flanges.

3. The installation site must provide sufficient space to ensure proper airflow and allow for future maintenance, disassembly, and servicing of the pump.

4. Isolation valves should be installed at the pump’s inlet and outlet to prevent system drainage during maintenance.

5. When installing the pipeline, ensure that the pump is not subjected to any pulling force from the piping.

6. The actual operating requirements of the pump must be fully considered, including its suction performance and pipeline pressure. Therefore, the inlet and discharge pipe diameters must be properly designed before installation.

7. The pump must not be installed at the lowest point of the system to avoid sediment accumulation.

8. During pipeline installation, avoid cavitation, particularly at the pump’s inlet side.

Technical Data 50Hz n=2900/min

MODEL	Power		US gpm	Q=DELIVERYI																			DN
			US gpm	0	26	40	66	79	106	119	159	185	211	238	317	370	396	476	529	608	793	925
			l/min	0	100	150	250	300	400	450	600	700	800	900	1200	1400	1500	1800	2000	2300	3000	3500
	kw	hp	m³/h	0	6	9	15	18	24	27	36	42	48	54	72	84	90	108	120	138	180	210	mm
32-125/07	0.75	1	H(m)	17.5	16.7	15.0	12.0	9.0															50x32
32-125/11	11	15		22.0	21.0	19.7	16.5	14.5	9.0														50x32
32-160/15	15	2		25.4	23.7	22.5	18.5	15.8															50x32
32-160/22	22	3		31.0	29.6	28.5	24.5	22.0	15.0														50x32
32-160/30	3	4		35.0	343.0	34.0	28.0	25.5	19.0	15.0													50x32
32-200/30	3	4		44.2	43.0	39.8	35.2	32.2	24.6	19.8													50x32
32-200/40	4	5.5		54.5	52.0	50.0	45.5	41.9	35.0	30.3													50x32
32-250/55	55	75		60.0	59.5	59.0	55.0	51.0	34.5														50x32
32-250/75	75	10		69.5	69.0	68.5	66.0	63.0	53.0														50x32
32-250/110	11	15		90.0	89.5	89.0	82.0	79.0	66.0														50x32
32-250/55D	55	75		79.5	74.7	71.8	63.0	56.0	37.5														50x32
32-250/75D	75	10		95.0	93.0	91.0	83.0	76.0	57.8														50x32
40-125/110	11	15		14.7				13.5	11.5	10.1	5.8												65x40
40-125/150	15	2		181.0				17.0	15.0	13.9	9.6	6.0											65x40
40-125/220	22	3		24.5				23.2	215.0	202.0	16.0	13.0	83.0										65x40
40-160/30	3	4		318.0				29.5	27.5	26.3	21.5	17.5											65x40
40-160/40	4	5.5		38.0				36.0	34.0	33.0	28.5	25.0	20.1										65x40
40-200/55	55	7.5		46.0				43.8	41.3	401.0	35.0	30.0											65x40
40-200/75	75	10		57.0				53.6	515.0	50.0	45.0	41.0	36.5										65x40
40-250/92	92	125		64.0				59.0	56.5	55.0	49.5	45.0	39.8										65x40
40-250/1100	11	15		72.0				67.5	66.0	63.5	57.5	522.0	47.0										65x40
40-250/150	15	20		84.5				80.0	773.0	752.0	71.0	65.0	61.0										65x40
50-125/22	22	3		17.0							154.0	14.0	12.8	115.0	6.5								65x50
50-125/30	3	4		20.0							18.8	18.0	17.0	15.6	11.0								65x50
50-125/40	4	5.5		24.0							23.1	23.0	21.5	20.3	158.0	118.0							65x50
50-160/55	55	75		32.0							30.6	30.0	28.0	26.6	20.5	14.8							65x50
50-160/75	75	10		40.0							38.0	37.0	36.0	34.4	29.0	24.0	21.0						65x50
50-200/92	92	125		50.5							46.8	45.0	43.0	40.9	32.5	26.7							65x50
50-200/110	11	15		57.5							53.5	52.0	50.0	47.5	40.0	34.0	29.0						65x50
50-200/150	15	20		62.0							58.0	565.0	54.5	52.0	44.5	39.0	35.5						65x50
50-250/150	15	20		68.5							64.0	63.0	61.5	59.0	50.0	41.0							65x50
50-250/185	18.5	25		79.0							75.8	74.8	74.0	71.5	63.5	55.5	47.0						65x50
50-250/220	22	30		89.5							86.0	85.3	84.0	81.5	73.5	65.5	57.0						65x50
65-125/40	4	5.5		19.0									17.3	16.8	14.5	13.0	11.8						80x65
65-125/55	55	75		23.0									21.3	20.9	19.0	175.0	16.7	13.7					80x65
65-125/75	75	10		27.0									26.0	25.6	24.5	23.0	22.5	20.0	18.0				80x65
65-160/92	92	125		33.0										31.5	30.0	28.0	27.1	24.0	21.5				80x65
65-160/110	11	15		36.0										34.5	33.0	315.0	30.8	28.0	25.5				80x65
65-160/150	15	20		42.0										41.0	40.0	38.5	37.8	35.0	33.0	29.5			80x65
65-200/150	15	20		45.0										45.5	43.0	41.0	40.2	36.5	34.0				80x65
65-200/185	18.5	25		52.0										523.0	51.0	49.0	482.0	44.5	42.0				80x65
65-200/220	22	30		59.0										59.5	58.0	56.0	55.0	52.0	49.5	44.5			80x65
65-250/220	22	30		64.8										64.7	62.0	60.0	58.5	53.0	50.0				80x65
65-250/300	30	40		80.0										79.8	77.5	75.5	74.5	70.0	66.0	58.0			80x65
65-250/370	37	50		92.0										90.5	88.5	87.0	85.0	80.5	78.0	68.0			80x65
65-315/370	37	50		102.0										99.2	97.0	95.0	94.5	92.4	90.0	83.0			80x65
65-315/450	45	60		112.0										109.2	107.7	105.8	104.5	102.5	100.0	93.0	66.0		80x65
65-315/550	55	75		122.0										119.2	117.4	115.7	114.5	112.5	110.0	103.0	76.0		80x65
65-315/750	75	100		141.0										139.8	137.3	135.6	134.5	132.5	130.0	122.0	96.0	65.5	80x65
80-125/40	4	5.5		17.0									16.5	15.9	143.0	135.0	11.6	10.0	7.5				100×80
80-125/55	55	75		21.0									20.5	20.0	19.0	18.0	16.5	15.0	12.5	95.0			100x80
80-125/75	75	10		26.0									25.0	25.0	24.5	23.8	22.5	21.5	19.5	16.5			100x80

Technical Data 50Hz n=2900/min

MODEL	Power		US gpm	Q=DELIVERY																		DN
			US gpm	0	264	396	529	634	793	881	925	969	1057	1233	1322	1586	1762	2203	2643	3524	4405
			l/min	0	1000	1500	2000	2400	3000	3333	3500	3666	4000	4666	5000	6000	6666	8333	10000	3333	16666
	kw	hp	m³/h	0	60	90	120	144	180	200	210	220	240	280	300	360	400	500	600	800	1000	mm
80-160/110	11	15	H(m)	27	27	273	24.5	211	16													100x80
80-160/150	15	20		328	326	325	302	27	22.1	18.5	16.7											100x80
80-160/185	185	25		39	385	38	36.7	33.6	28	253	23.5											100x80
80-160/220	22	30		44	435	43	417	386	33.8	303	28.5											100x80
80-200/220	22	30		48	47.7	475	43.5	392	32.5	272	24.5											100x80
80-200/300	30	40		60	597	59.5	57	531	47	42.7	40.5											100x80
80-250/370	37	50		715	70.9	70.5	65.5	593	51	432	38.5											100x80
80-250/450	45	60		88	86.7	86	836	785	70.5	60	51											100x80
80-250/550	55	75		945	945	94.5	918	87	79.5	721	68.3											100x80
80-315/450	45	60		85	84	826	82	78	68.3	61	56											100x80
80-315/550	55	75		98	97	95.6	95	91	81.3	74	69											100x80
80-315/750	75	100		124	123	121.6	121	117	1073	100	95	90	80.8									100x80
80-315/900	90	125		144	143	141.6	141	137	1273	120	115	110	100.8									100x80
100-160/150	15	20		35	335	325	30	278	24.5	21.5	20	183	15									125x100
100-160/185	18.5	25		38.5	37.5	36.5	34.3	32.2	29	25.7	24	22	18									125x100
100-160/220	22	30		43	41	40	37.6	35.2	31.5	28.5	27	25.3	22									125x100
100-200/220	22	30		38.5	36.7	35.7	33.8	31.7	28.5	26.8	26	25	22.9	16.3	13							125x100
100-200/300	30	40		44.5	42.5	42	40.2	38.8	36.7	34.2	33	31.7	29	21.7	18							125x100
100-200/370	37	50		55	53	51	50.6	49.2	47	45	44	42.8	40.5	32.8	29							125x100
100-250/450	45	60		65	65	64	63	61	58	56	55	53.3	50	39	33.5							125x100
100-250/550	55	75		77	76	75.5	75	73.8	72	71.7	71.5	70.7	69	62.3	59							125x100
100-250/750	75	100		91	91	90.5	89.7	88	85.5	84	83.3	81.5	78	71.7	68.5	48						125x100
100-315/550	55	75		80			79	77.4	75	74	73.5	73	71.3	68	66	60						125x100
100-315/750	75	100		100			99	97.4	95	94	93.5	93	91.3	88	86	80						125×100
100-315/900	90	125		118			116.5	114.7	112	111	110.8	110.5	108.7	106	104	98						125x100
100-315/1100	110	150		138			136.5	134.7	132	131	130.8	130.5	128.7	126	124	118						125x100
125-200/450	45	60		398			39.3	39.2	39	38.9	38.9	38.8	37.5	35	34	28.6	25					150x125
125-200/550	55	75		498			49.3	49.2	49	48.9	48.9	48.8	47.5	45	44	38.6	35					150x125
125-200/750	75	100		60.8			60.3	60.2	60	59.9	59.9	59.8	58.5	56	55	49.6	46					150x125
125-250/550	55	75		70			67	65	64	63	62	61	59.5	57	56	53						150x125
125-250/750	75	100		80			77	75	74	73	72	71	69.8	671	66.2	63	58.5					150x125
125-250/900 ·	90	125		87			84	82	81	80	79	78	77	74.5	73.5	70.2	65.7					150x125
125-250/1100	110	150		97			94	92	91	90	89	88	87	84.6	83.9	80.4	76					150x125
125-315/900	90	125		89						87	86	85	83.7	815	81	77	74	61				150x125
125-315/1100	110	150		103						101	100	99	97.8	95.5	95	91.5	88.2	75.6				150x125
125-315/1320	132	180		118						116	115	114	112.5	110.5	110.3	106.5	103.2	91				150x125
125-315/1600	160	220		138						136.8	135.9	135	133.7	131.5	131	127.5	124.2	112				150x125
150-200/750	75	100		50								48	47.9	47.6	47.2	46.7	46.4	40.6	36.8	25.2		200x150
150-200/900	90	125		56								54	53.9	53.6	53.2	52.7	52.4	48	42.8	31.2		200x150
150-200/1100	110	150		65.2								62	61.7	61.2	60.8	59.8	59.2	57.2	54	46		200x150
150-250/1100	110	150		67											64.2	62	60.6	55.8	49.8	33.8		200x150
150-250/1320	132	180		80.2											78.2	76.3	75	70.6	65	50.2	29.8	200x150
150-250/1600	160	220		90											88.4	87	86	82	77.2	62.4	42	200x150
150-315/1600	160	220		92											90	88.3	87.2	82.8	76.8	60.4		200x150
150-315/2000	200	270		111											110.6	108.7	107.4	103.4	98.2	83.4	62.2	200x150
150-315/2500	250	340		135											135.4	133.7	132.6	128.6	123.8	110.2	91	200x150

RST.pdf

RST Series Centrifugal End Suction Pump

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