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Product Dewspiption
The Meibao QDX/QX Series all stainless steel small submersible electric pump is a compact, lightweight, and highly efficient pumping solution designed for clean water transfer, domestic water supply, and light industrial circulation. Featuring a precision-cast stainless steel (SUS304) shell, this series offers excellent corrosion resistance, durability, and a sleek, rust-free appearance in a small form factor. The pump consists of three main parts: water pump, seal, and motor. The motor is located at the upper part with a single-phase or three-phase asynchronous motor structure, while the pump is at the lower part employing an upward suction structure to prevent clogging from sludge . With F-class insulation, thermal overload protection, and double mechanical seals, the QDX/QX series ensures reliable and safe operation for residential, agricultural, and light industrial applications .
All Stainless Steel Construction
Precision-cast stainless steel (SUS304) shell provides superior corrosion resistance, rust prevention, and a sleek, pollution-free appearance, suitable for clean and mildly corrosive water applications .
Floating Oil Device Small size and light weight make the pump easy to install, transport, and handle, ideal for use in confined spaces such as small wells, residential buildings, and tight work areas .
F-Class Motor with Thermal Protection
Equipped with high-temperature motor winding wire, F-class insulation, and built-in thermal overload protector to prevent motor burnout from overcurrent or overheating, significantly extending service life .
Advanced Sealing System
Utilizes double mechanical seals with fluororubber (FKM) for reliable sealing and leak-free performance, effectively protecting the motor from water ingress .
Upward Suction Design
The water pump is located at the lower part of the motor with an upward suction structure, which prevents clogging caused by the pump getting stuck in sludge .
Typical Applications
Domestic Water Supply: Household water boosting, well water pumping, rainwater harvesting, and water tower supply .
What is the maximum viscosity the MB pump can handle?
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The MB magnetic drive pump is optimized for low-to-medium viscosity liquids (up to ~200 cPs at operating temperature). For high-viscosity media above 200 cPs, please contact our engineering team — we may recommend a reduced speed operation or a gear pump alternative.
Can the MB pump handle HF acid?
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Yes. The MB pump with PTFE or PVDF wet-end is fully compatible with hydrofluoric acid at concentrations up to 50% and temperatures up to 80°C. PTFE offers the best HF resistance. For semiconductor-grade HF applications, we recommend our dedicated HF Series with ultra-pure material specifications.
What is the pump's NPSH requirement?
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NPSH requirements vary by model and operating point. Typically, the MB series requires 2-3m NPSHa. We recommend ensuring the available NPSH (NPSHa) from your installation is at least 1m higher than the pump's required NPSHr. Full NPSH curves are available in the product datasheet.
Do you offer ATEX / explosion-proof versions?
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Yes. ATEX Zone 1 and Zone 2 certified models are available for environments where flammable gases or vapors may be present. Please specify the ATEX zone and gas group (IIA, IIB, or IIC) when requesting a quote.
Can I get spare parts for this pump?
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Yes. We stock a comprehensive range of spare parts for the MB series including magnet assemblies, impellers, shaft sleeves, and containment shells. Parts can be shipped within 5-10 working days to most destinations. We recommend ordering a spare parts kit with your initial order for critical applications.
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