Explosion Proof Pumps Information
Explosion proof pumps are pumps specially designed to enclose parts of the pump that could be subject to internal damage or could cause explosion of the transfer media or surrounding atmosphere. They are used in applications which involve flammable media or combustible environments that require protection or isolation from ignition sources.
Explosion proof pumps can be designed to operate based on a dynamic or positive displacement principle. Dynamic pumps, and their subtype centrifugal pumps, utilize fluid momentum and velocity to generate pump pressure while positive displacement pumps use expanding and contracting cavities to move fluids. Dynamic pumps produce a variable flow suited for generating high flow rates with low viscosity fluids, while positive displacement pumps produce a constant flow suited for producing high pressures (and low flow rates) with high viscosity fluids.
Selecting a suitable pump requires an analysis of different pump types. Most types of pumps can be designed as explosion proof, so users must distinguish between types based on their performance and application. Information on the different pump types can be found on Engineering360's Pump Types page.
The primary specifications to consider when selecting explosion proof pumps are flowrate, pump head, pressure, horsepower, power rating, outlet diameter, and operating temperature. These specifications are described in detail in Engineering360's Pump Flow page.
Materials of construction are an important factor to consider, particularly for explosion proof pumps where isolation and protection from ignition sources is the primary feature. Materials also must be compatible with the media to prevent contamination of the fluid or corrosion within the pump. Materials and other pump features can are described in the Pump Features page on Engineering360.
Flygt, a Xylem brand | KSB AG
Related Products & Services
Dosing pumps are low-volume fluid pumps with controllable discharge rates used to inject additives into the mixing or pumping system.
Hydraulic pumps deliver high-pressure fluid flow to the pump outlet. Hydraulic pumps are powered by mechanical energy sources to pressurize fluid.
Magnetic Drive Pumps
Magnetic drive pumps are sealless pumps that use a coaxial magnetic coupling to transmit torque to an impeller. A standard electric motor drives a set of permanent magnets that are mounted on a carrier or drive assembly.
Plastic pumps are designed to move fluids that would corrode or damage other types of pumps. They provide broad chemical resistance and are less costly and lighter in weight than metal pumps.
Positive Displacement Pumps
Positive displacement pumps use a mechanical force such as gears, bladders, pistons, plungers or diaphragms to push liquid through and out of the pump.
Sanitary pumps are used to transport and meter solutions, slurries, and colloids of food and agricultural materials in operations such as food processing that require cleanliness. There are four basic types of sanitary pumps: centrifugal, positive displacement, jet, and airlift.
Infusion or withdrawal syringe pumps provide high pressure and high accuracy for applications such as high performance liquid chromatography (HPLC). Used to deliver precise amounts of fluid at specific time intervals.