Aseptic Diaphragm Pump (EHEDG)

Tapflo’s Aseptic Diaphragm 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. When used in conjunction with Tapflo’s patented control and monitoring equipment, preventive and routine maintenance is also easily integrated into any process, whilst also enabling accurate and precise control of the pump’s performance, optimising your system to the best of its ability!

Thanks to Tapflo’s innovative, simple & ingenious design these pumps are compact, robust & reliable. Furthermore, they are quick & easy to maintain, keeping your service costs and process down time to an absolute minimum.

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

The pumps are supplied as standard with ISO Tri-Clamp connections, however, they may also be equipped with almost any type of connection used in the hygienic field – DIN clamps, SMS milk, RJT, DIN aseptic to mention a few.

ATEX rated. Now also available int he TZ ATEX Pump series which covers Zone 0 for environments where flammable materials are continuously present. The TZ range covers all materials in our ATEX AOD range except our Aluminium Metal Diaphragm Pump.

What applications can our Aseptic EHEDG Diaphragm Pump be used for?

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), FEP/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 340L

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
Data	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 w/ EPDM/NBR Diaphragm (ºC)	80
Max Fluid Temp (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.

Technical Data

Drive Type	Pneumatic
Flow Rate	Up to 330 l/min
Pressure	Up to 16 Bar
Material	Stainless Steel AISI 316L
Self-Priming	Yes
Solids Handling	Up to 10mm
Viscosity	0-200+ cSt

Aseptic Diaphragm Pump Performance Curves

General Dimension 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.

Aseptic Diaphragm Pump Dimensions Diagram

Dim	Pump Size
Dim	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
DIM 32676¹	DN40	DN50	DN65
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 diagram

TX94
Direction	Load (N)	Moment of Force (Nm)
X	31	6.3
Y	31	6.3
Z	31	6.3

TX144
Direction	Load (N)	Moment of Force (Nm)
X	35	7.3
Y	35	7.3
Z	35	7.3

TX244
Direction	Load (N)	Moment of Force (Nm)
X	43	8.8
Y	43	8.8
Z	43	8.8