4SD Oil Filled Deep Well Pump

This oil-filled deep well pump is built for extracting groundwater from deep boreholes. With a sealed motor cooled by oil, it provides reliable performance for agricultural irrigation, residential water supply, and rural water systems operating at greater depths.

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Parameter

Model		Power		Q(m³/h)	DELIVERY n≈2850 r/min											Pump casing external diameter Φ(mm)
Model		Power		Q(m³/h)	0	0.3	0.6	0.9	1.2	1.5	1.8	2.1	2.4	2.7	3
1~220V/50HZ	3~380V/50HZ	Kw	Hp	l/min	0	5	10	15	20	25	30	35	40	45	50
4SDm2/8	4SD2/8	0.37	0.5	H(m)	58	58	54	52	49	47	43	38	32	26	19	96
4SDm2/11	4SDM2/11	0.55	0.75		80	76	74	71	68	64	59	52	45	36	27	96
4SDm2/14	4SDM2/14	0.75	1		101	97	94	91	86	82	75	66	57	46	34	96
4SDm2/19	4SDM2/19	1.1	1.5		137	132	127	123	117	111	102	90	77	62	46	96
4SDm2/25	4SDM2/25	1.5	2		181	174	168	162	154	146	134	119	101	82	60	96
4SDm2/30	4SDM2/30	2.2	3		217	209	201	194	185	175	161	143	122	98	72	96
4SDm2/35	4SDM2/35	2.2	3		253	243	235	226	216	204	187	166	142	114	85	96
	4SD2/40	3	4		289	278	268	259	247	233	214	190	162	131	97	96
	4SD2/45	3	4		326	313	302	291	278	263	241	214	182	147	109	96
	4SD2/52	4	5.5		376	361	348	336	321	303	278	247	211	170	126	96
	4SD2/60	4	5.5		434	417	402	388	370	350	321	285	243	196	145	96

Model		Power		Q(m³/h)	DELIVERY n≈2850 r/min									Pump casing external diameter Φ(mm)
Model		Power		Q(m³/h)	0	0.6	1.2	1.8	2.4	3	3.6	4.2	4.8
1~220V/50HZ	3~380V/415V	Kw	Hp	l/min	0	10	20	30	40	50	60	70	80
4SDm3/7	4SDm3/7	0.37	0.5	H(m)	53	49	46	43	40	35	29	22	14	96
4SDm3/9	4SDm3/9	0.55	0.75		68	63 59		55	51	45	37	28	18	96
4SDm3/12	4SDm3/12	0.75			91	84	79	74	68	60	50	37	24	96
4SDm3/16	4SDm3/16	1.1	1.5		121	112 105		98	91	80	66	50	32	96
4SDm3/21	4SDm3/21	1.5	2		159	147	138	129	119	105	87	65	42	96
4SDm3/26	4SDm3/26	2.2	3		197	182 171		160	147	130	108	81	52	96
4SDm3/30	4SDm3/30	2.2	3		227	210	197	184	170	149	124	93	59	96
	4SDm3/38	3	4		288	266 250		234	215	189	158	118	75	96
	4SDm3/48	4	5.5		363	336	315	295	272	239	199	149	95	96
	4SDm3/55	5.5	7.5		426	385 361		338	312	274	228	171	109	96
	4SDm3/60	5.5	7.5		454	420	394	369	340	299	249	186	119	96

Model		Power		Q(m³/h)	DELIVERY n≈2850 r/min											Pump casing external diameter Φ(mm)
Model		Power		Q(m³/h)	0	0.6	1.2	1.8	2.4	3	3.6	4.2	4.8	5.4	6
1~220V/50HZ	3~380V/50HZ	Kw	Hp	l/min	0	10	20	30	40	50	60	70	80	90	100
4SDm4/6	4SDm4/6	0.37	0.5	H(m)	46	43	40	38	36	33	30	26	21	15	7	96
4SDm4/8	4SDm4/8	0.55	0.75		61	57	53	51	48	45	40	35	28	19	10	96
4SDm4/10	4SDm4/10	0.75			76	71	67	63	60	56	50	43	35	24	12	96
4SDm4/14	4SDm4/14	1.1	1.5		107	100	93	89	84	78	71	61	49	34	17	96
4SDm4/17	4SDm4/17	1.5	2		129	121	113	108	102	95	88	74	59	41	21	96
4SDm4/21	4SDm4/21	2.2	3		160	149	140	133	126	117	106	91	73	51	26	96
4SDm4/24	4SDm4/24	2.2	3		183	171	160	152	144	134	121	104	84	58	30	96
	4SDm4/30	3	4		228	213	200	190	179	167	151	130	104	73	37	96
	4SDm4/38	4	5.5		289	270	254	240	227	212	191	165	132	92	47	96
	4SDm4/48	5.5	7.5		266	342	320	304	287	268	242	209	167	116	59	96
	4SDm4/52	5.5	7.5		396	370	347	329	311	290	262	228	181	126	64	96

Model		Power		Q(m³/h)	DELIVERY n=2850 r/min								Pump casing external diameter Φ(mm)
Model		Power		Q(m³/h)	0	1.2	2.4	3.6	4.8	6	7.2	8.4
1~220V/50HZ	3~380V/415V	Kw	Hp	l/min	0	20	40	60	80	100	120	140
4SDm6/5	4SDm6/5	0.37	0.5	H(m)	34	32	29	27	24	20	14	7	96
4SDm6/7	4SDm6/7	0.55	0.75		48	44	41	38	33	27	19	10	96
4SDm6/9	4SDm6/9	0.75			61	57	53	49	43	35	25	12	96
4SDm6/12	4SDm6/12	1.1	1.5		82	76	71	65	57	47	33	17	96
4SDm6/15	4SDm6/15	1.5	2		102	95	88	81	72	59	42	21	96
4SDm6/18	4SDm6/18	2.2	3		122	114	106	98	86	71	50	25	96
4SDm6/21	4SDm6/21	2.2	3		143	133	124	114	100	82	58	29	96
	4SDm6/26	3	4		177	165	153	141	124	102	72	36	96
	4SDm6/32	4	5.5		218	203	189	173	153	125	89	44	96
	4SDm6/36	5.5	7.5		245	228	212	195	172	141	100	50	96
	4SDm6/40	5.5	7.5		272	254	236	217	191	157	111	55	96
	4SDm6/45	7.5	10		306	285	266	244	215	176	125	62	96
	4SDm6/50	7.5	10		340	317	295	271	239	196	139	69	96

Model		Power		Q(m³h)	DELIVERY n≈2850 r/min										Pump casing external diameter Φ(mm)
Model		Power		Q(m³h)	0	1.2	2.4	3.6	4.8	6	7.2	8.4	9.6	10.8
1~220V/50HZ	3~380V/415V	Kw	Hp	l/min	0	20	40	60	80	100	120	140	160	180
4SDm8/5	4SDm8/5	0.55	0.75	H(m)	34	33	32	30	29	26	23	19	14	7	96
4SDm8/7	4SDm8/7	0.75			48	46	44	42	40	37	33	27	19	10	96
4SDm8/9	4SDm8/9	1.1	1.5		61	59	57	54	51	48	42	35	25	13	96
4SDm8/11	4SDm8/11	1.5	2		75	72	70	67	63	58	52	42	30	17	96
4SDm8/14	4SDm8/14	2.2	3		96	92	89	85	80	74	66	54	38	21	96
4SDm8/16	4SDm8/16	2.2	3		109	105	101	97	91	85	75	62	44	24	96
	4SDm8/20	3	4		137	132	127	121	114	106	94	77	55	30	96
	4SDm8/24	4	5.5		164	155	152	145	137	127	113	92	66	36	96
	4SDm8/28	5.5	7.5		191	184	177	169	160	148	132	108	77	42	96
	4SDm8/32	5.5	7.5		218	210	202	194	183	170	150	123	88	48	96
	4SDm8/36	7.5	10		246	237	228	218	205	191	169	139	9	54	96
	4SDm8/40	7.5	10		273	263	253	242	228	212	188	154	110	60	96

Model		Power		Q(m³/h)	DELIVERY n≈2850 r/min									Pump casing external diameter Φ(mm)
Model		Power		Q(m³/h)	0	1.8	3.6	5.4	7.2	9	10.8	12.6	14.4
1~220V/50HZ	3~380V/415V	Kw	Hp	Vmin	0	30	60	90	120	150	180	210	240
4SDm10/4	4SDm10/4	0.55	0.75	H(m)	24	23	22	20	19	16	13	10	6	96
4SDm10/6	4SDm10/6	0.75	1		36	34	32	30	28	24	20	15	8	96
4SDm10/8	4SDm10/8	1.1	1.5		48	46	43	41	37	33	27	20	11	96
4SDm10/10	4SDm10/10	1.5	2		60	57	54	51	47	41	34	25	14	96
4SDm10/12	4SDm10/12	2.2	3		72	69	65	61	56	49	40	30	17	96
4SDm10/14	4SDm10/14	2.2	3		84	80	6	71	65	57	47	35	20	96
	4SDm10/17	3	4		102	97	92	86	79	69	57	42	24	96
	4SDm10/21	4	5.5		126	120	114	107	98	8	71	52	30	96
	4SDm10/25	5.5	7.5		150	143	135	127	117	102	84	62	35	96
	4SDm10/28	5.5	7.5		168	160	152	142	131	114	94	70	40	96
	4SDm10/32	7.5	10		192	183	173	163	149	131	108	80	45	96
	4SDm10/36	7.5	10		216	206	195	183	168	147	121	90	51	96

Description

The 4SD Oil Filled Deep Well Pump is a high-performance, vertical multistage pump designed for deep water extraction in demanding environments. With its oil-filled, submersible motor, this pump ensures long-term reliability, stable operation, and energy efficiency. Built for deep wells, industrial water supply, and agricultural irrigation, the 4SD pump is an ideal choice for those requiring dependable and continuous water delivery.

Engineered for durability and low maintenance, the 4SD pump integrates advanced materials and design features that provide resistance to wear, corrosion, and harsh working conditions. Whether used in agriculture, municipal water systems, or industrial processes, the 4SD ensures efficient water pumping with minimal downtime.

Overview – What Makes It Special

The 4SD pump stands out due to its oil-filled submersible motor design, which allows smooth operation, heat dissipation, and long service life even in deep and continuous pumping applications. Unlike conventional pumps, the oil-filled motor provides lubrication and cooling simultaneously, reducing friction and wear over time.

This pump is particularly suited for applications where high reliability is critical and maintenance access may be limited, making it a preferred choice for wells, reservoirs, and industrial water systems. Its vertical multistage construction allows it to generate high pressure, making it effective for both water delivery and boosting systems.

Key Features & Functional Highlights

Oil-Filled Submersible Motor

Provides continuous lubrication and cooling
Reduces motor wear and prolongs operational life
Ensures stable performance for extended pumping durations

Deep Well Capability

Designed for water extraction from deep wells or reservoirs
Maintains strong and stable water flow even at substantial depths
Reliable for domestic, agricultural, or industrial pumping tasks

Corrosion and Wear Resistance

High-quality materials protect against corrosion and rust
Long-term durability in water with varying chemical compositions
Low maintenance requirements for continuous operation

Multistage Design

Vertical multistage structure increases water pressure efficiently
Optimizes energy consumption for long-distance water delivery
Flexible installation for various applications, from irrigation to municipal water supply

Practical Applications

The 4SD pump is versatile and adaptable, making it suitable for a broad range of water pumping tasks:

Agricultural Irrigation

Delivers water to crops, orchards, and greenhouses
Compatible with sprinklers, drip systems, and other irrigation setups
Provides reliable pressure for consistent water distribution

Domestic & Residential Water Supply

Supplies water to homes from deep wells or storage reservoirs
Enhances water pressure for taps, showers, and other household systems
Ideal for areas with low city water pressure or remote water sources

Industrial & Municipal Use

Suitable for factories, water treatment plants, and municipal water systems
Supports water transfer, pressure boosting, and reservoir management
Reduces downtime with reliable continuous operation

Other Applications

Circulates water in ponds, reservoirs, and tanks
Transfers water between storage locations efficiently
Supports dewatering and construction site operations when needed

Functional Advantages

Here's a concise overview of why the 4SD pump is preferred in demanding environments:

Feature	User Benefit
Oil-Filled Motor	Long-lasting performance and reduced maintenance
Deep Well Capability	Reliable water extraction from substantial depths
Multistage Pressure System	Efficient high-pressure water delivery
Durable Construction	Resistant to corrosion, rust, and wear
Flexible Installation	Can be used in wells, tanks, reservoirs, and irrigation systems

Where the 4SD Excels

The 4SD pump is particularly suited for applications where water reliability is critical and access for maintenance may be limited. Its oil-filled design allows continuous operation in industrial, agricultural, and municipal contexts.

Users appreciate the pump's ability to:

Extract water from deep wells consistently
Maintain steady pressure for irrigation and domestic supply
Operate with minimal noise and vibration
Handle continuous workloads without overheating or motor wear

From remote farms to urban water supply networks, the 4SD pump ensures smooth, reliable, and energy-efficient water delivery.

Company Advantages

We are a professional pump manufacturer with extensive experience and a commitment to quality. Our pumps are engineered to meet international standards for performance, durability, and reliability. With decades of industry expertise, advanced production facilities, and rigorous quality control, we ensure each 4SD pump is manufactured to deliver dependable operation for years.

Why Choose Us

Expertise in pump design and manufacturing
Advanced production equipment and strict quality control
Tailored solutions for diverse industrial, agricultural, and domestic needs
Focused on long-term performance and customer satisfaction

Every product is tested to guarantee consistent operation and high reliability, ensuring your investment in a 4SD pump provides lasting value.

Installation & Maintenance Guidelines

Installation Tips

Ensure a stable and level mounting surface for the pump
Maintain a secure, leak-free suction line for optimal priming
Follow local electrical codes for safe motor connection
Protect from debris or sand ingress to maximize efficiency

Maintenance Guidance

Inspect motor oil levels and seals periodically
Clear any sediment or buildup from pump intake areas
Conduct routine checks on electrical connections and fittings
Winterize or drain the pump in freezing conditions to prevent damage

Routine maintenance ensures the 4SD pump operates at peak efficiency and prolongs service life.

The 4SD Oil Filled Deep Well Pump is a robust, versatile, and reliable solution for deep water extraction and high-pressure water delivery. Its oil-filled motor, durable materials, and multistage design make it suitable for agricultural irrigation, domestic water supply, industrial, and municipal applications.

Whether installed in a deep well, tank, or reservoir, the 4SD pump provides continuous, efficient, and low-maintenance operation, making it an excellent investment for anyone seeking long-term reliability and superior performance in water pumping.

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About

Who we are

Caifu Pump Industry is a backbone enterprise in the domestic submersible pump, centrifugal pump and self-priming pump industries.

Caifu as a China 4SD Oil Filled Deep Well Pump manufacturer and sale 4SD Oil Filled Deep Well Pump producer, The company has strong strength, sophisticated testing equipment and complete experimental means. It has gathered a group of high-quality scientific and technological and management talents, formed obvious human resource advantages and strong technical advantages, and is in line with international standards.
The company has successively introduced internationally advanced intelligent CNC production equipment, and adopted international standard CAD drawings for auxiliary design. The company always adheres to strict implementation of standards in product design, production, sales and service and all aspects.

Caifu.

Industry experience
34+
Founded in 1990, the company has more than 34 years of industry experience.
Factory area
12000㎡
The company has a construction area of more than 12,000 square meters
Product Variety
1000+
The company has more than 1,000 varieties and specifications of products.

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