I. Overview

The WFB series sealless self-priming pumps are the pioneering products that fill a domestic gap, featuring multiple functions such as temperature and pressure resistance, "single-pass suction," and "lifetime self-priming." Currently, we produce a series of complete sets in various materials including 321, 304, 316, 316L, A3, and PP (reinforced polypropylene), with five different designs and over a thousand specifications. These pumps are widely applicable in industries such as electronics, power, chemicals, metallurgy, food, electroplating, environmental protection, fire protection, municipal construction, water purification, textile dyeing, mining, and civil construction, and have received high praise from customers.

Section 2: Unique Advantages

1. Employing the "pump-type annular multi-face centrifugal seal device," it eliminates the traditional stuffing box seal, packing seal, mechanical seal of water pumps, completely controls "leakage, overflow, dripping, and seepage," and is an ideal equipment for replacing various long-shaft submersible pumps and submersible pumps.

2. The sealing device operates without friction and has minimal wear, boasting a lifespan up to 10 times longer than similar products.

3. Adopted the principle of vacuum pump transplant, featuring stable and reliable self-priming performance. Particularly, with the use of "electrical air control valve," it truly achieves "one-time priming, lifelong self-priming."

4. Low vibration, low noise, easy movement, simple disassembly and installation, no need for anchoring.

5. Features superior self-control functions, compatible with high-tech fields and highly automated systems.

Section 3: Selection Methods

  50WFB-AD1

50 - Pump Inlet Diameter (mm)

WFB - Sealless Self-Priming Pump

AD1 - Performance Classification

The flanges of our water pumps are manufactured according to the Chinese National Standard. The standard codes are GB9115.2-88 and GB9115.3-88. The pressure of the flanges for non-metallic water pumps is 0.6 MPa; for metallic water pumps, it is 1.0 MPa. Each of our water pumps is supplied with a reverse flange at the inlet and outlet ports upon factory shipment.