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SYW Type Vertical Cast Iron Submersible Sewage Pump

Flow Range：8-600 m³/h
Head Range：5-80 m
Inlet/Outlet Range：DN25-DN200
Motor Power：0.75-75 kw
Submersible Depth：0.5-7 m

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SYW Type Vertical Cast Iron Submersible Sewage Pump

The Vertical Cast Iron Double-pipe Submersible Sewage Pump is a specialized type of sewage submersible pumps, designed to efficiently handle the discharge of sewage and wastewater containing solids and debris much like a high-performance sewage ejector pumps. This sewage submersible pump features a robust cast iron construction, ensuring durability and resistance to corrosion in harsh environments. Its unique double-pipe design enhances the pump's ability to pass solids smoothly, reducing the risk of clogging and ensuring reliable operation—making it a dependable choice for any sewage tank and pump setup. As a cast iron water pump, it combines the strength of cast iron with advanced submersible technology, making it suitable for a wide range of applications in municipal sewage systems, industrial wastewater treatment, and construction site drainage as a powerful sewage ejection pump. With its vertical installation, this pump offers a compact footprint and easy maintenance, making it an ideal choice for efficient and reliable sewage pumping solutions.

Application Scenarios

Municipal Sewage Systems

The pump is widely used in municipal sewage treatment plants for pumping raw sewage, sludge, and screenings.

Industrial Wastewater Treatment

It is suitable for handling industrial wastewater containing solids, chemicals, and other contaminants in various industries such as chemical, petroleum, pharmaceutical, and mining.

Construction Site Drainage

The pump is ideal for dewatering construction sites, excavations, and tunnels, where it can efficiently remove groundwater and sewage.

Agricultural Irrigation and Drainage

In agricultural settings, the pump can be used for irrigation, drainage, and the handling of livestock wastewater.

Product Advantages

Strong Sewage-discharging Capabilities

The pump is capable of efficiently discharging sewage and wastewater containing large solids and debris, with a high tolerance for foreign matter.

High Efficiency

The advanced hydraulic design and optimized impeller shape result in high pumping efficiency, reducing energy consumption and operating costs, making it ideal for use in sewage ejector pumps, whether as part of a complete sewage tank and pump system or as a dedicated sewage ejection pump.

Reliable Operation

The pump is designed for continuous operation in harsh conditions, with robust construction and reliable components—similar to high-performance sewage ejector pumps—that ensure long service life and minimal maintenance requirements. This makes it an ideal fit for any sewage tank and pump setup, delivering the dependable action of a premium sewage ejection pump even in the most demanding environments.

SYW Type Vertical Cast Iron Submersible Sewage Pump vs CNY Type Vertical In-Tank Chemical Pump

comparison table
Comparison Item	SYW Type Vertical Cast Iron Submersible Sewage Pump	CNY Type Vertical In-Tank Chemical Pump
Applicable Medium & Working Condition	Wastewater and sewage containing small solid particles, industrial waste sump drainage. Designed for non-corrosive sewage medium.	Clean low-viscosity chemical liquids, acid & alkali circulating fluids. For corrosive, particle-free industrial liquid transfer.
Main Construction Material	Cast iron for pump casing and impeller. Metal structure for sewage service.	FRPP / Stainless steel wetted parts, plastic or stainless anti-corrosion components.
Core Strengths	Motor mounted above liquid level, completely separated from pumped sewage. Low risk of motor burnout, simple on-site inspection and maintenance.	Outstanding chemical resistance against corrosive fluids, stable operation for continuous chemical circulation, low vibration.
Restrictions & Drawbacks	Not compatible with strong corrosive liquids. Shaft length has a certain limit for long custom models.	Not suitable for media with solid particles, solid impurities will cause abrasion and damage to pump wet-end parts.

WTY Conclusion: SYW pump is specially developed for sewage with small solids, while CNY chemical pump focuses on corrosive particle-free chemical fluids. The key selection difference lies in whether the conveyed medium contains solid impurities and its corrosion property.

FAQ for SYW Type Vertical Cast Iron Submersible Sewage Pump

FAQ 1

Q: Can the SYW vertical cast iron submersible sewage pump handle sewage with solid particles?

A: Yes. This pump adopts cast iron flow passage design, which allows pumping sewage containing small solid particles. It is suitable for industrial wastewater and sump drainage. Large hard solids are not recommended to avoid impeller abrasion.

WTY Conclusion: SYW pump is engineered for media with small solids, but pre-filter is suggested if large impurities exist.

FAQ 2

Q: What is the biggest advantage compared with fully submersible sewage pumps?

A: The motor of SYW pump is installed above the liquid surface and will not be immersed in sewage. It avoids motor burnout risk caused by seal failure, and inspection & maintenance can be carried out without draining the tank.

WTY Conclusion: The above-liquid motor structure is the core merit, greatly reducing maintenance downtime.

FAQ 3

Q: Can SYW pump be used to transport strong corrosive chemical liquids?

A: No. Its wetted components are cast iron material, which is not resistant to strong acid and strong alkali corrosive media. For corrosive liquid transfer, CNY vertical chemical pump is recommended instead.

WTY Conclusion: Cast iron construction limits SYW to non-corrosive sewage only; select anti-corrosion pump models for chemical service.

The key technical parameters of this cast iron water pump are detailed below, defining its operational capabilities and design standards.

Serial number	Model	bore (mm)	Traffic (m3/h)	Head (m)	Power (kW)	Rotation speed (r/min)	Eff. (%)	Range of Heads Used
1	25YW8-22-1.1	25	8	22	1.1	2825	38.5	9-25
2	32YW12-15-1.1	32	12	15	1.1	2825	40	9-25
3	40YW15-15-1.5	40	15	15	1.5	2840	45.1	10-10
4	40YW15-30-2.2	40	15	30	2.2	2840	48	10-10
5	50YW20-7-0.75	50	20	#	0.75	1390	54	10-21
6	50YW10-10-0.75	50	10	10	0.75	1390	56	10-21
7	50YW20-15-1.5	50	20	15	1.5	2840	55	10-10
8	50YW15-25-2.2	50	15	25	2.2	2840	56	10-10
9	50YW18-30-3	50	18	30	3	2880	58	11-19
10	50YW25-32-5.5	50	25	32	5.5	2900	53	12-9
11	50YW20-40-7.5	50	20	40	7.5	2900	55	12-9
12	65YW25-15-2.2	65	25	15	2.2	2840	52	10-10
13	65YW37-13-3	65	37	13	3	2880	55	11-19
14	65YW25-30-4	65	25	30	4	2890	58	11-29
15	65YW30-40-7.5	65	30	40	7.5	2900	56	12-9
16	65YW35-50-11	65	35	50	11	2930	60	1-8
17	65YW40-50-15	65	40	50	15	2930	63	1-8
18	80YW40-7-2.2	80	40	#	2.2	1420	52	11-20
19	80YW43-13-3	80	43	13	3	2880	50	11-19
20	80YW40-15-4	80	40	15	4	2890	57	11-29
21	80YW65-25-7.5	80	65	25	7.5	2900	56	12-9
22	100YW80-10-4	100	80	10	4	1440	62	12-10
23	100YW110-10-5.5	100	110	10	5.5	1440	66	12-10
24	100YW100-15-7.5	100	100	15	7.5	1440	67	12-10
25	100YW85-20-7.5	100	85	20	7.5	1440	68	12-10
26	100YW100-25-11	100	100	25	11	1460	65	12-30
27	100YW100-30-15	100	100	30	15	1460	66	12-30
28	100YW100-35-18.5	100	100	35	18.5	1470	65	1-9
29	125YW130-15-11	125	130	15	11	1460	62	12-30
30	125YW130-20-15	125	130	20	15	1460	63	12-30
31	150YW145-9-7.5	150	145	#	7.5	1440	63	12-10
32	150YW180-15-15	150	180	15	15	1460	65	12-30
33	150YW180-20-18.5	150	180	20	18.5	1470	75	1-9
34	150YW180-25-22	150	180	25	22	1470	76	1-9
35	150YW130-30-22	150	130	30	22	1470	75	1-9
36	150YW180-30-30	150	180	30	30	1470	73	1-9
37	150YW200-30-37	150	200	30	37	1480	70	1-19
38	200YF300-7-11	200	300	7	11	970	73	8-27
39	200YW250-11-15	200	250	11	15	970	74	8-27
40	200YW400-10-22	200	400	10	22	1470	76	1-9
41	200YM400-13-30	200	400	13	30	1470	73	1-9
42	200YT250-15-18.5	200	250	15	18.5	1470	72	1-9
43	200YW300-15-22	200	300	15	22	1470	73	1-9
44	200YT250-22-30	200	250	22	30	1470	71	1-9
45	200YW350-25-37	200	350	25	37	1480	75	1-19
46	200YW400-30-45	200	400	30	45	1480	70	1-19
47	250YW600-9-30	250	600	9	30	980	74	9-6
48	250YW600-12-37	250	600	12	37	1480	78	1-19
49	250YW600-15-45	250	600	15	45	1480	75	1-19
50	250YW600-20-55	250	600	20	55	1480	73	1-19
51	250YW600-25-75	250	600	25	75	1480	73	1-19
52	300YW800-12-45	300	800	12	45	980	76	9-6
53	300YW500-15-45	300	500	15	45	980	70	9-6
54	300YW800-15-55	300	800	15	55	980	73	9-6
55	300YW600-20-55	300	600	20	55	980	75	9-6
56	300YT80/-20-75	300	800	20	75	980	78	9-6
57	300YW950-20-90	300	950	20	90	980	80	9-6
58	300YW1000-25-110	300	1000	25	110	980	82	9-6
59	350YW1100-10-55	350	1100	10	55	980	84.5	9-6
60	350YW1500-15-90	350	1500	15	90	980	82.5	9-6
61	350YW1200-18-90	350	1200	18	90	980	83.1	9-6
62	350YW1100-2H-132	350	1100	28	132	740	83.2	1-9
63	350YW1000-36-160	350	1000	36	160	740	78.5	1-9
64	400YW1500-10-75	400	1500	10	75	980	82.1	9-6
65	400YW2000-15-132	400	2000	15	130	740	85.5	1-9
66	400YW1700-22-160	400	1700	22	160	740	82.1	1-9
67	400YW1500-26-160	400	1500	26	160	740	83.5	1-9
68	400YW1700-30-200	400	1700	30	200	740	83.5	1-9
69	400YW1800-32-250	400	1800	32	250	740	82.1	1-9
70	500YW2500-10-110	500	2500	10	110	740	82	1-9
71	500YW2600-15-160	500	2600	15	160	740	83	1-9
72	500YW2400-22-220	500	2400	22	220	740	84	1-9
73	500YW2600-24-250	500	2600	24	250	740	82	1-9

Data is for reference only. Please consult our technicians for further details.

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Sales Manager：+39 389 949 9067
+86 198 1685 5829

Sales Representative：+39 349 721 3297

ivy@witneat.com

No. 8, North Road, Pump and Valve Industrial Zone, Dongou HE TIAN Industrial Zone

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WENZHOU WITNEAT FLUID EQUIPMENT CO., LTD.

IBAN: LU314080000047209373

Account Holder Name: WITNEAT FLUID EQUIPMENT CO., LTD.

Currency of Receipt: EUR GBP PLN

Bank Name: Banking Circle S.A.

Bank Location: Luxembourg

Bank Address: 2 Boulevard de la Foire L-1528 Luxembourg Luxembourg

Account Type: Checking

Swift Code: BCIRLULL (BCIRLULLXXX, if 11 characters are required)