Aseptic EHEDG Air Operated Double Diaphragm Pumps

Aseptic EHEDG Air Operated Double Diaphragm Pumps

Aseptic EHEDG Air Operated Double Diaphragm Pumps



Aseptic EHEDG Air Operated Double Diaphragm Pumps

The Tapflo Aseptic EHEDG Air Operated Double Diaphragm Pumps Series has been developed for service within the pharmaceutical, bio-tech and food industries where a clean process and ability to clean components quickly is critical. This series of pumps is EHEDG Certified and is constructed from FDA & USP VI approved materials and also conforms to ATEX directive 94/9/EC which means it is perfectly suited to almost any applications in the aforementioned markets.

The EHEDG (European Hygienic Engineering & Design Group) certificate is your guarantee that the design is according to the hygienic guidelines. Furthermore, the pump is cleanability tested, which means bacteria does not grow in the pump after the cleaning and draining procedure. Units can also be delivered with backup diaphragm systems.

There are no hidden areas where bacteria can grow. The manifold clamps and the housing screws are simply removed for complete disassembly and cleaning. The pump is also designed for cleaning and sterilization in place – C.I.P. and S.I.P. After such operations, the pump is easily turned in its support for drainage.

Models are supplied with an extra fine surface finish to Ra 0.8 as standard and to Ra 0.5 upon request.


Typical Applications

The Tapflo Sanitary Air Operated Diaphragm Pumps are ideally suited to a plethora of applications in numerous industries, such as:

Industry Example of application
Food & Dairy Soup, Cream, Syrup, Dairy Products, Flavouring, Alcohol, Chocolate, Paste
Grocery Ketchup, mayonnaise, tomato products, mustard
Beverages Flavours, colouring, fruit juice
Bakery Dough, ingredients
Brewery Beer, flavours, colouring, wort
Hygiene Soap, toothpaste, shampoo
Cosmetics Cream, alcohol, perfume
Pharmaceuticals & Cosmetics Cream, Paste, Alcohol & Filtration Gels

Materials Data
Component Material
Wetted Metal Parts AISI 316L, Ra 0.8, Ra 0.5 on request
Centre Block PP Conductive
Diaphragms PTFE (FDA & USP VI approved), PTFE 1705B (Solvents, FDA & USP VI approved), EPDM (FDA on request) White EPDM (FDA approved), PTFE with White Back (FDA & USP VI approved)
Valve Balls PTFE (FDA approved), PTFE (FDA & USP VI approved), AISI 316L
Air Valve Body: brass (standard), AISI 316L or PET, O-rings: NBR (standard), EPDM (FDA & USP VI approved) or FKM (FDA approved)
Sealing (Wetted) EPDM (FDA approved), EPDM (FDA & USP VI approved) FEP/FKM (FDA approved)
Housing Pin Screws Stainless Steel AISI 316
Diaphragm Shaft Stainless Steel AISI 304L

Performance Range

The Tapflo Aseptic EHEDG Air Operated Double Diaphragm Pumps have a wide range of capacities to suit almost any application, from metering and dosing to general transfer. The max capacity range varies from 94 – 330 l/min with discharges pressures up to 8 bar as standard & solids passage up to 10 mm.


Data Pump Size
TX94 TX144 TX244
Max Capacity, l/min 94 144 330
Volume / Stroke, ml (*) 320 515 1415
Max Discharge Pressure, Bar 8 8 8
Max Air Pressure, Bar 8 8 8
Max Dry Suction Lift, m (**) 2 3 4.4
Max Wet Suction Lift, m 8 9 9
Max Permissible ø of Solids, mm (Ball Valves / Flap Valves) 6 6 10
Max Fluid Temp with EPDM Diaphragms, ºC 80
Max Fluid Temp with PTFE Diaphragms, ºC 110
Min Fluid Temp, ºC -20
Weight, Kg 15 22 46

* = Based on pumps fitted with EPDM Diaphragms, pumps with PTFE Diaphragms are subject to approx. 15% loss in flow.

** = This is max value with stainless steel valve balls, other valve ball materials may reduce the suction.

Performance Curves

aseptic curves

General Dimensional Information

NOTE: Build specific GA Drawings in 2D as well as DWG and STEP Files are available on request for easy integration into system installations and OEM products. Dimensions are in mm and based on standard build constructions.

General Dimensional EHEDG

Dim Pump Size
TX94 TX144 TX244
A 304 324 405
B 295 298 380
C 185 188 270
D 594 652 903
E 457 488 700
F 11 11 11
G 52 70 102
H 70 70 70
I 112 131 158
J DN40 DN50 DN65
DIN 326761
K 40 40 40
L ¼″ ¼″ ½″
M 50.5 64 91
N 38 50 66
X 260 280 360
Y 275 278 360

Permitted Loads on Manifolds

We recommend not exceeding the following loads & forces reacting on the manifolds.

Permitted Loads on Manifolds EHEDG

Direction Load (N) Moment of Force (Nm)
X 31 6.3
Y 31 6.3
Z 31 6.3
Direction Load (N) Moment of Force (Nm)
X 35 7.3
Y 35 7.3
Z 35 7.3
Direction Load (N) Moment of Force (Nm)
X 43 8.8
Y 43 8.8
Z 43 8.8

Additional information

Pump Size

TX94, TX144, TX244

Connection Size

, ,

Drive Type

Flow Rate

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Self Priming

Solids Handling




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