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Specialty Pump

Specialty / Seal-less Pump in Singapore


Leak free pump for corrosive and toxic liquid


Integrated into operations and systems producing, handling, and disposing chemicals, chemical pumps fall under a subcategory of speciality pumps. These pumps are specifically designed and constructed to withstand a range of substances of varying toxicity, corrosiveness, chemical formulations, and viscosity. They are manufactured with durable and robust materials. There are two main types of speciality pumps – the centrifugal and the positive displacement pumps. Browse some of the available options on our website or get in touch with us directly to discuss how we can meet your needs with any speciality supply order.

Positive Displacement Pump


With its seal-less pumping chamber and hydraulically-balanced diaphragm design, the Hydra-Cell positive displacement pumps ensure leak-free pumps, performing at low-maintenance while undertaking heavy fluids over an expansive scale of pressures and flows.

Hydra-Cell pumps can run dry and free from damage, effectively managing particulates and abrasives of up to 500 microns, which typically would have destroyed other pumps. Multiple diaphragms minimise pulsations for the Hyrda-Cell to operate practically pulse-free, negating the need for exorbitant pulsation dampeners.

Centrifugal Pump


Finish Thompson Inc. (FTI) is a magnetic drive, seal-less, centrifugal pump that is seal-less and offers complete encasement of process liquid, using product bearings that are lubricated within a pressure margin and a magnetic coupling to relay torque across the encasement shell.

Magnetic drive pumps usually suit small and medium-sized services involving corrosive, toxic, dangerous and other troublesome liquids that should not be in contact with the environment or the electric motor.

Chemical Pumps for Any Application


The best chemical handling pumps


In multiple industries, chemical pumps are commonly used in oil and gas production facilities and general industrial applications. When sourcing for chemical pumps, it is crucial to consider its construction material, pump sizing and performance capabilities, pump type and actuation, and certifications and features. At Winston Engineering, we work closely with our clients to design custom systems that meet industry standards.

Quality Speciality Pumps Supplied in Singapore


The leading chemical pump supplier


Our extensive inventory of speciality pumps caters to domestic, commercial, and industrial clients. Winston Engineering specialises in all systems, including chemical pumps built to handle the most challenging jobs, taking abrasive and corrosive substances.

Whether you seek an ordinary magnetic drive centrifugal pump, a positive displacement pump, or would like to design a pump built directly to your specifications, our team of experienced engineers and machinists in Singapore will be able to see you through your project. Get in touch with us and find out how our designs can be modified to tackle higher capacities or other specific requirements relevant to your industry.

FAQ

Magnetic pumps offer maximum safety because the containment shell forms an impenetrable barrier between the pumped fluid and the atmosphere. This prevents the release of hazardous vapours or corrosive liquids, which is critical for meeting strict Singapore workplace safety (WSHO) and environmental (NEA) regulations.

In demanding environments, especially in chemical pump applications like electroplating or semiconductor manufacturing, highly aggressive chemicals rapidly degrade standard mechanical seals. A magnetic pump, built with chemically inert materials (like PFA-lined or specialist plastics), guarantees that the fluid only contacts corrosion-resistant components, leading to significantly extended service intervals, often multiple years between major overhauls, compared to 6-12 month seal replacement cycles on traditional units.

Correct sizing requires defining the fluid's properties (viscosity, specific gravity, temperature) and the system's requirements (flow rate, total dynamic head). Simply matching the pump's discharge size to the pipe size is a common and costly mistake. Oversizing a centrifugal magnetic pump leads to excessive motor strain, high utility bills, and accelerated wear (e.g., increased internal bearing wear due to operation far left of the Best Efficiency Point, or BEP).

While magnetic centrifugals handle high-volume transfer, other specialty pump types are essential for precision.

  • High-Pressure Applications: Used for reverse osmosis (RO) systems in water treatment plants, boiler feed injection in power generation, or specialised high-pressure etching/cleaning in electronics manufacturing.
  • Metering/Dosing: High-accuracy diaphragm or piston metering pumps are indispensable for water and wastewater treatment, where minute adjustments to chemicals like sodium hypochlorite or coagulants must be precise to meet PUB discharge standards. They ensure the right amount of chemical is dosed every single time, minimising chemical wastage and ensuring regulatory compliance.

Industries requiring high-precision flow control (Pharmaceutical, Food & Beverage for CIP/SIP, and Water Utilities) rely on these specialty positive displacement pumps rather than volumetric centrifugal units.

Dry running is the most common cause of catastrophic failure for a standard centrifugal magnetic pump, as the pumped fluid provides the lubrication and cooling for the internal bearings. Winston Engineering supplies pumps equipped with:

  1. Advanced Bearing Materials: Use of proprietary high-grade ceramic (SiC) bearings and thrust rings designed for minimal friction and enhanced heat dissipation.
  2. Internal Circulation Paths: Optimised internal flow paths to ensure critical bearing areas are cooled and lubricated, even at low flow.
  3. External Monitoring: Installation of dry-run sensors and power monitors that detect a sudden drop in fluid load/power draw (which precedes bearing failure) and instantly trip the motor, limiting damage to a quick restart after priming.