U-shaped impeller Vortex impeller, which can generate vortex flow and extract thicker sludge or liquids containing long fibers.	P-shaped impeller Open impeller, which can be divided into single-blade or double-blade impellers. The blades can cut off general foreign objects, preventing solid waste from blocking and reducing the occurrence of pump blockage failures.

 

Product Overview

The F-series non-clogging sewage submersible pump (hereinafter referred to as the pump) consists of three parts: a water pump, a seal, and a motor. The motor is located at the top of the pump and is a single-phase or three-phase asynchronous motor. The water pump is located below the motor and has a semi-open vortex impeller and volute structure. A double-end face mechanical seal plus a stuffing box oil seal is used between the water pump and the motor. The mechanical seal acts as a dynamic seal, and each fixed stop seal uses a "0"-type oil-resistant rubber seal ring as a static seal. The entire pump uses stainless steel bolts, and the pump casing is treated with electrophoresis and spray painting, effectively isolating air and water, preventing oxidation, and extending service life. The pump has an external current-type protector, F-class insulation grade, and the cable is waterproofed to prevent the pump from burning out.

 

Features

● Uses a non-blocking impeller design: It can exert maximum drainage function for sewage containing solids or fibrous materials;

● High-precision motor, high efficiency, the rotating shaft is processed by heat treatment, and the characteristics are stable;

● Motor with external current-type thermal protector: Prevents the water pump from burning out during abnormal operation such as overload and jamming;

● The motor uses a new sealing structure, which has good sealing performance and ensures that it will not be damaged during assembly;

● Single-phase motors are equipped with a mechanical centrifugal switch design: Solves the problem of difficulty starting the motor due to low voltage;

● All series cables use rubber cables with waterproof treatment: Prevents water vapor from entering the motor through the cables, avoiding motor dampness and water ingress;

● All cast iron parts use standard grade gray cast iron 200.

 

Applications

● Domestic sewage discharge;

● Rainwater accumulation discharge;

● Wastewater treatment in industries such as food, leather, pulp, steel, and electronics;

● Wastewater treatment in livestock and pig farms.

 

Operating Conditions

● The pump frequency is 50Hz, and the voltage is 220V single-phase AC and 380V three-phase AC;

● The voltage fluctuation range is ±10% of the rated value;

● Operating ambient temperature 0~40°C, conveying medium temperature does not exceed +40°C;

● Conveying medium viscosity ≤1.3x10 ³kg/m³；

● The solid content ratio of solid particles in the medium does not exceed 3%;

● Submersion depth does not exceed 5m;

● The PH value of the conveying medium is between 4-10.

 

Model Meaning

 

Performance Curve

 

Technical Parameters

Model Specifications	Rated Flow m³/h	Rated Head m	Maximum Flow m³/h	Maximum Head m	Rated Power kW	Synchronous Speed r/min	Rated Voltage V	Rated Current A	Pipe Inner Diameter mm	Pump External Dimensions (Length*Width*Height)m	Passing Particles mm
F-21U	12	9.5	19	15	0.75	3000	220/380	7.3/2.7	50	238×154×458	35
F-31U	18	7.5	32	13	0.75	3000	220/380	7.3/2.7	80	275x174x460	30
F-22U	12	15	26	20	1.5	3000	220	9.5	50	290x205x568	35
F-22U	12	15	26	20	1.5	3000	380	3.6	50	290x205x478	35
F-32U	25	9	42	16	1.5	3000	220	9.5	80	262x205x610	50
F-32U	25	9	42	16	1.5	3000	380	3.6	80	262x205x520	50
F-33U	25	12.5	50	19	2.2	3000	220	14	80	262x205x640	50
F-33U	25	12.5	50	19	2.2	3000	380	5.1	80	262x205x540	50
F-35U	30	16.5	59	23	3.7	3000	380	7.4	80	262x205x570	50
F-32P	36	8.5	58	15.5	1.5	3000	220	9.5	80	275x260x612	35
F-32P	36	8.5	58	15.5	1.5	3000	380	3.6	80	275x260x522	35
F-33P	36	12.5	65	19	2.2	3000	220	14	80	275x260x642	35
F-33P	36	12.5	65	19	2.2	3000	380	5.1	80	275x260x542	35
F-35P	36	19	76	27	3.7	3000	380	7.4	80	275x260x572	35

 

Installation Dimensions

Model Specifications	H	H1	L	L1	L2	W	DN	D	G	n-M1
F-21U	458	64	238	85	153	154	φ50	/	G2	/
F-31U	460	73	275	87	188	174	φ80	/	G3	/
F-22U(220V/50Hz)	568	60	290	116	175	205	φ50	/	G2	/
F-22U(380V/50Hz)	478	60	290	116	175	205	φ50	/	G2	/
F-32U(220V/50Hz)	610	82	402	116	147	205	φ80	φ150	G3	4-M14
F-32U(380V/50Hz)	520	82	402	116	147	205	φ80	φ150	G3	4-M14
F-33U(220V/50Hz)	640	82	402	116	147	205	φ80	φ150	G3	4-M14
F-33U(380V/50Hz)	540	82	402	116	147	205	φ80	φ150	G3	4-M14
F-35U(380V/50Hz)	570	82	402	116	147	205	φ80	φ150	G3	4-M14
F-32P(220V/50Hz)	612	122	415	130	145	260	φ80	φ150	G3	4-M14
F-32P(380V/50Hz)	522	122	415	130	145	260	φ80	φ150	G3	4-M14
F-33P(220V/50Hz)	642	122	415	130	145	260	φ80	φ150	G3	4-M14
F-33P(380V/50Hz)	542	122	415	130	145	260	φ80	φ150	G3	4-M14
F-35P(380V/50Hz)	572	122	415	130	145	260	φ80	φ150	G3	4-M14

The F-series non-clogging sewage submersible pump (hereinafter referred to as the pump) consists of three parts: pump, seal, and motor.