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Denwell Fluid Controls
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Magnetic Sealless Pumps

Magnetic Sealless Pumps Specification

Control System
Manual/Automatic

Max Suction
Up to 3 meters

Caliber
25mm, 40mm, 50mm

Frequency
50 Hz / 60 Hz

Mounting Type
Baseplate Mounted

Flow Rate
Up to 15 m/hr

Noise Level
< 75 dB

Voltage
230V / 415V

Features
Leakproof, Corrosion-Resistant, Maintenance-Free

Inlet/Outlet
25mm x 25mm to 50mm x 40mm

Working Temperature
Up to 80C

Theory
Centrifugal Pump Theory

Discharge Pressure
Up to 2.5 Bar

Head Size
Up to 18 meters

Speed
2900 RPM (at 50 Hz)

Material
PP / PVDF / Stainless Steel / FRP

Structure
Horizontal Single Stage

Power
0.37 kW to 5.5 kW

Standard
ISO 2858 / DIN

Fuel Type
Electric

Pressure
Up to 2.5 Bar

Usage
Chemical Transfer, Acid Handling, Pharmaceuticals

Application
Chemical, Pharmaceuticals, Dyes, Effluent, Water Treatment

Suction Type
Self / Non-Self Suction

Seals Type
Magnetic Sealless (Leakproof)

Priming
Self Priming (Specific models only)

Pump Type
Magnetic Drive

Capacity
Up to 15 m/hr

Direction of Rotation
Clockwise

Weight
Depending on Model: 17 kg to 90 kg

Bearing Type
Carbon / Ceramic

Color Options
Blue, White, Custom

Suitable Media
Acids, Alkalis, Corrosive Liquids, Slurry

Connection Type
Flange / Threaded

Motor Protection
IP55 / IP54

Maximum Viscosity
Up to 200 cP

Maximum Ambient Temperature
45°C

Impeller Type
Closed / Semi-Open

Installation Position
Horizontal

About Magnetic Sealless Pumps

Denwell seal-less magnetic drive centrifugal pump operates by connecting anexternal magnet directly to the motor shaft, which then conveys torque toan internal magnet. This setup generates a magnetic field that allows theimpeller to rotate and move the fluid without any physical contactbetween the moving parts. The rear casing, situated between the two magnetic assemblies, hermetically seals the hydraulic section from themotor, ensuring no fluid leakage.

Engineered for Leakproof Chemical Transfer

Our magnetic sealless pumps offer superior leakproof performance thanks to their magnetic drive design, eliminating shaft seals and hence the risk of leakage. Constructed from robust materials such as PP, PVDF, stainless steel, and FRP, they handle corrosive and hazardous fluids safely. Ideal for chemical, pharmaceutical, and water treatment industries, these pumps run quietly while maximizing operational safety.

Flexible Installation and Broad Compatibility

Designed for horizontal baseplate mounting, these pumps feature versatile connection types, including flange and threaded options, accommodating various system setups. The range supports multiple voltage and frequency standards (230V/415V, 50Hz/60Hz), with a maximum working temperature of 80C and ambient up to 45C. Select from self-priming or standard variants to match your process requirements.

Low Maintenance, High Durability

With their magnetic sealless construction and high-quality carbon or ceramic bearings, these pumps are virtually maintenance-free. They minimize downtime and costs, resisting wear from aggressive and particulate-laden fluids. IP54/IP55-protected motors and corrosion-resistant builds further ensure extended service life, making them a cost-effective solution for demanding fluid transfer applications.

FAQ's of Magnetic Sealless Pumps:

Q: How do magnetic sealless pumps ensure leakproof operation for corrosive fluids?

A: These pumps use a magnetic coupling to drive the impeller, eliminating mechanical shaft seals that are prone to wear and leakage. Their sealless design, combined with corrosion-resistant materials like PP, PVDF, stainless steel, or FRP, provides a completely leakproof solution for handling aggressive chemicals and hazardous liquids.

Q: What types of chemicals and fluids are suitable for these magnetic drive pumps?

A: The pumps are suitable for acids, alkalis, corrosive liquids, and slurries, making them ideal for applications in chemical processing, pharmaceuticals, effluent treatment, dyes, and water treatment plants. Thanks to their robust materials, they can handle liquid viscosities up to 200 cP and solids-laden media with ease.

Q: When should I consider using a self-priming magnetic pump model?

A: Self-priming models are recommended when the pump needs to start with air present in the suction line or where the suction source is below the pump level (up to 3 meters). Choose self-priming versions for processes that require efficient and reliable startup without manual priming.

Q: Where can these pumps be installed, and what mounting options are available?

A: These pumps are designed for horizontal installation on a baseplate, making them suitable for both indoor and outdoor industrial environments. Their IP54/IP55 motor protection ensures safe operation in a variety of locations. Installation flexibility is enhanced through flange or threaded connections.

Q: What is the process for selecting the correct pump model for my application?

A: To select the right model, consider the fluid type, required flow rate (up to 15 m3/hr), head (up to 18 meters), operating temperature (up to 80C), chemical compatibility, installation conditions, and power supply (230V/415V). Consult with your supplier or manufacturer for sizing and customization based on your specific needs.

Q: How maintenance-free are these pumps in regular use?

A: Thanks to their sealless design and high-quality carbon or ceramic bearings, these pumps are virtually maintenance-free. They require minimal service, reducing downtime and maintenance costs even with aggressive or slurry-laden fluids.

Q: What are the main benefits of using magnetic drive sealless pumps in my facility?

A: Key benefits include leakproof operation, enhanced safety when handling hazardous substances, corrosion resistance, low noise levels (<75 dB), adaptability for manual or automatic control, and compliance with international standards (ISO 2858 / DIN). Their durable, easy-to-maintain design ensures long-term, economical operation.

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