Electrically operated diaphragm pumps

Electrically operated diaphragm pumps

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Tapflo electrically operated diaphragm pump is an environmentally friendly alternative to the traditional air-operated diaphragm pump. It is designed for gentle pumping of the most aggressive media, including those containing abrasive particles.

This series pump features lower energy consumption compared to an air-operated pump, long diaphragm life and the ability to run dry without damage. The lack of seals and simple design ensures easy maintenance.

To increase versatility, Tapflo electric diaphragm pumps are available in HDPE/PTFE, metal and hygienic versions. Tapflo electric diaphragm pumps are intended for use in the chemical, mechanical, painting and hygienic applications, among others.

Tapflo electrically operated diaphragm pump is an environmentally friendly alternative to the traditional air-operated diaphragm pump. It is designed for gentle pumping of the most aggressive media, including those containing abrasive particles.

This series pump features lower energy consumption compared to an air-operated pump, long diaphragm life and the ability to run dry without damage. The lack of seals and simple design ensures easy maintenance.

To increase versatility, Tapflo electric diaphragm pumps are available in HDPE/PTFE, metal and hygienic versions. Tapflo electric diaphragm pumps are intended for use in the chemical, mechanical, painting and hygienic applications, among others.

Technical data
Pump capacity: 13.2 m3/h (220 l/min)
Max. discharge pressure: 4 bar
Max size of solids: plastic and metal version: 4-10 mm
hygienic version: 4-15 mm (up to 51 mm in the version with check valves for large solids)
Temperature: 110 °C
Housing materials: PE, PTFE, aluminum, PTFE-coated aluminum, AISI 316L stainless steel
Diaphragm materials: PTFE, PTFE 1705B, EPDM, NBR, FKM, white EPDM, PTFE with white EPDM backing
Valve ball materials: PTFE, EPDM, NBR, AISI 316L stainless steel, PU, Ceramic, FKM, PTFE TFM 1635, PE1000, SiC
Main differences in material designs:
PE HD (polyethylene) High abrasion resistance, 6-7 times better than polypropylene (PP) – this allows the use of such pumps for pumping, e.g., slurries with strong abrasive properties. PE is resistant to most aggressive chemicals, such as concentrated acids and alkalis. The maximum operating temperature is 70 °C.
PTFE (pure polytetrafluoroethylene) High chemical resistance – pumps made of this material can handle even the most corrosive substances, e.g., concentrated nitric acid. The maximum operating temperature is 100 °C.
Aluminum and cast iron For transporting media with a neutral pH, both thick and thin, containing solid particles or having abrasive properties. Pumps made of aluminum and cast iron can be used, for example, in workshops, the dyeing industry, wastewater treatment plants, etc.
PTFE-coated aluminum Created for the printing industry, where an alternative to more expensive PTFE pumps was needed, but aluminum was not chemically resistant. Pumps for use wherever a medium with slightly acidic or alkaline properties needs to be pumped.
AISI 316L stainless steel Castings for these pumps are made using the lost wax method, which ensures high surface quality and dimensional accuracy. They are characterized by mechanical strength combined with chemical resistance. AISI 316L steel is resistant to aggressive substances such as nitric acid and sodium hydroxide.
Available sizes:
Plastic version:
Model Max. capacity (l/min) BSP threaded connections
TE50 P 48 1/2″
TE100 P 110 1″
TE200 P 220 1 and 1/2″
TE50 T 48 1/2″
TE100 T 110 1″
TE200 T 220 1 and 1/2″
Metal version:
TE70 P 48 1/2″
TE120 P 110 1″
TE220 P 220 1 and 1/2″
TE70 A/C 48 1/2″
TE120 A/C 110 1″
TE220 A/C 220 1 and 1/2″
Hygienic version:
Model Max. capacity (l/min) Tri-clamp connections
TE80 48 DN 25 SMS 3017 tri-clamp
TE125 110 DN 38 SMS 3017 tri
Typical applications
  • Chemical industry
  • Surface conditioning
  • Water treatment
  • Paint, print industry
  • Pulp and paper industry
  • Hygienic applications
  • Mechanical industry
  • Varnish industry
Operation principle

Operating principle of the Tapflo electric diaphragm pump

The Tapflo electric diaphragm pump is driven by a gearmotor. In this type of pump, there is a need to convert rotary motion into reciprocating motion. This is achieved by using an eccentric shaft with a cam and piston. The rotary motion of the shaft (red part) is transferred to the reciprocating motion of the diaphragm shaft (yellow part).

SUCTION (chamber 1)
The first diaphragm creates suction force in one chamber (right side) by retracting the diaphragm in the direction that creates a vacuum.

DISCHARGE (chamber 2)
The second diaphragm simultaneously transfers air pressure to the medium in the second diaphragm chamber (left side), pushing it towards the discharge port.

Construction
Zawory klapowe do pomp higienicznych Tapflo Flapper Valves

Tapflo flapper valves are used for pumping liquids containing large solid particles. They consist of only two elements and are hygienic and easy to clean. They allow pumping larger solid particles than standard hygienic pumps:

  • T80 and T125 models: particles up to 17 mm in diameter
  • T225 and T525 models: particles up to 42 mm in diameter
  • T825 model: particles up to 95 mm in diameter

In addition, Tapflo hygienic diaphragm pumps equipped with flapper valves can dry-run from a height of up to 4.5 m.

Magnetic Ball Valve Lifters

The ability to empty the pump contents is crucial in most hygienic applications. The Tapflo ball valve lifting system ensures pump emptying without the need to dismantle it from the installation when other types of emptying are not possible. This way, the pump can be emptied without the need to rotate it.

Operating principle:

The ball valve, made of AISI 420 or PTFE with a steel core, is lifted by a magnetic lifter mounted on the manifold.

Working principle of Tapflo magnetic ball valve lifters

Podnośniki kul zaworowych do pomp higienicznych Tapflo
Extended Life Diaphragms

Tapflo diaphragms are composite constructions, ideal for heavy-duty applications, providing a completely uniform surface in contact with the medium. This avoids leaks through the diaphragm and keeps it clean.

Diaphragms are available in various materials and colors to suit all needs.

Available material versions: EPDM, NBR, FKM, PTFE, PTFE TFM 1705b, white EPDM, PTFE with white EPDM backing, white NBR.

Membrany w pompach membranowych Tapflo
Composite diaphragm construction

The advanced manufacturing, curing, trimming, and finishing process ensures a long service life for the composite diaphragm, which will withstand millions of strokes. The component materials are specially made and adapted to the composite diaphragm technology and the insert molding process.
The elements are bonded using chemical agents and adhesives.

Kompozytowa konstrukcja membran w pompach membranowych Tapflo

(1) PTFE TFM layer (2) front layer (3) core (metal) (4) fabric (5) back layer

Ball Check Valves

Tapflo pumps are equipped with four check valves to ensure that the liquid is pumped in the right direction.
Ball valves are the simplest and most reliable check valve design. They are characterized by tightness and ease of cleaning and replacement.

Available material versions: EPDM, NBR, PTFE, PTFE TFM 1635, PE1000, FKM, PU, Ceramic, SiC, AISI 316L.

Kule zaworowe w pompach membranowych Tapflo
ATEX version
ATEX Explosion-Proof Pumps | TXE Series

Tapflo’s electric diaphragm pumps made of metal and conductive plastic can be used in Ex 1 explosion hazard zones according to the ATEX Directive 2014/34/EU.

The use of antistatic materials ensures that no electrostatic charges will accumulate in the pump. Conductive material additives increase the electrical conductivity of the pump surface.

The pump unit is equipped with a clutch, gear motor and air treatment system in ATEX design.

Tapflo Electric Diaphragm Pumps in ATEX Design
Accessories
Pressure Switch

A device that monitors the discharge pressure value, protecting against closing the valve on the pump discharge. Protection against pump damage due to excessive pressure increase on the discharge side.

Frequency Converter/Inverter

The frequency converter/inverter allows for full control of operation by controlling the motor’s rotational speed, and thus the pump’s capacity.

 

  • Technical data

  • Typical applications

  • Operation principle

  • Construction

  • ATEX version

  • Accessories

Pump capacity: 13.2 m3/h (220 l/min)
Max. discharge pressure: 4 bar
Max size of solids: plastic and metal version: 4-10 mm
hygienic version: 4-15 mm (up to 51 mm in the version with check valves for large solids)
Temperature: 110 °C
Housing materials: PE, PTFE, aluminum, PTFE-coated aluminum, AISI 316L stainless steel
Diaphragm materials: PTFE, PTFE 1705B, EPDM, NBR, FKM, white EPDM, PTFE with white EPDM backing
Valve ball materials: PTFE, EPDM, NBR, AISI 316L stainless steel, PU, Ceramic, FKM, PTFE TFM 1635, PE1000, SiC
Main differences in material designs:
PE HD (polyethylene) High abrasion resistance, 6-7 times better than polypropylene (PP) – this allows the use of such pumps for pumping, e.g., slurries with strong abrasive properties. PE is resistant to most aggressive chemicals, such as concentrated acids and alkalis. The maximum operating temperature is 70 °C.
PTFE (pure polytetrafluoroethylene) High chemical resistance – pumps made of this material can handle even the most corrosive substances, e.g., concentrated nitric acid. The maximum operating temperature is 100 °C.
Aluminum and cast iron For transporting media with a neutral pH, both thick and thin, containing solid particles or having abrasive properties. Pumps made of aluminum and cast iron can be used, for example, in workshops, the dyeing industry, wastewater treatment plants, etc.
PTFE-coated aluminum Created for the printing industry, where an alternative to more expensive PTFE pumps was needed, but aluminum was not chemically resistant. Pumps for use wherever a medium with slightly acidic or alkaline properties needs to be pumped.
AISI 316L stainless steel Castings for these pumps are made using the lost wax method, which ensures high surface quality and dimensional accuracy. They are characterized by mechanical strength combined with chemical resistance. AISI 316L steel is resistant to aggressive substances such as nitric acid and sodium hydroxide.
Available sizes:
Plastic version:
Model Max. capacity (l/min) BSP threaded connections
TE50 P 48 1/2″
TE100 P 110 1″
TE200 P 220 1 and 1/2″
TE50 T 48 1/2″
TE100 T 110 1″
TE200 T 220 1 and 1/2″
Metal version:
TE70 P 48 1/2″
TE120 P 110 1″
TE220 P 220 1 and 1/2″
TE70 A/C 48 1/2″
TE120 A/C 110 1″
TE220 A/C 220 1 and 1/2″
Hygienic version:
Model Max. capacity (l/min) Tri-clamp connections
TE80 48 DN 25 SMS 3017 tri-clamp
TE125 110 DN 38 SMS 3017 tri

Performance curves

Electric diaphragm pump movies - assembly and disassembly