HDPE & PTFE Diaphragm Pump | Tapflo Pumps UK

Thanks to Tapflo’s innovative and simple design the HDPE Pumps and PTFE Pumps are compact, robust and reliable. Furthermore, they are quick and easy to maintain, keeping your service costs and process downtime to an absolute minimum. This simple design is visible across the full Tapflo Air Operated Double Diaphragm Pump range.

Tapflo’s patented control and monitoring equipment are accurate for precise control when paired with routine maintenance, the pump can perform at its optimal ability.

Benefits of the range include:

Self-Priming capabilities up to 9m when wetted
A range of pneumatic accessories to support the pumping process, designed and manufactured in the UK
Discharge Pressure up to 8 Bar as standard or 16 Bar when system features a booster
Air Operated – simple to install and intrinsically safe
Able to run dry without damage to the pump. Please note that dry running for long periods of time will cause increased wear to the pump’s internals.

Tapflo’s Air Operated Double Diaphragm Pumps are machined from either solid block HDPE or PTFE.

HDPE

HDPE Pumps have a superior wear resistance than standard Polypropylene which ensures they can handle abrasive fluids. For parts that are more vulnerable to wear inside the pump, such as valve seats and ball stoppers, user a different grade of HDPE that has an even greater resistance to abrasion and mechanical stress.

HDPE is also resistant to most aggressive chemicals such as concentrated acids and alkalis. This means that Tapflo’s HDPE Pumps are ideal for chemical handling.

PTFE

Another option for Tapflo’s plastic AOD Pumps is PTFE. These are manufactured from solid block virgin PTFE and has a superior chemical and temperature resistance to HDPE. For example, PTFE can handle temperatures up to 100°C instead of 70°C for HDPE.

Technical Data

	Pump Size
Data	9	20	50	100	200	400	800
Pump housing and all wetted	PE or PTFE							PE
Centre block (not wetted)	PP
Diaphragms	PTFE, FKM	PTFE, PTFE 1705B, EPDM or NBR
Valve Balls	–	–	PTFE, EPDM, NBR, AISI 316L*, PU, Ceramic*
Rod Valves (TR9 and TR20)	PTFE		–	–	–	–	–
Air Valve	Brass (standard), stainless steel AISI 316L, PET with NBR (standard), EPDM or FKM O-Rings
O-Rings (wetted)	FEP/FKM (standard on pumps with PTFE diaphragms), EPDM, NBR or FKM
Housing Pin Screws	Stainless steel AISI 316L
Diaphragm Shaft	Stainless steel AISI 316L
Drum Handle (TD pumps)	–	Stainless steel AISI 316L			–	–	–
Reinforcement Plates (TF pumps)	–	–	Stainless steel AISI 316L				–

*** = Not available on T800

Performance Range

The Tapflo PE & PTFE 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 11 – 820 l/min with discharges pressures up to 8 bar as standard & solids passage up to 15 mm.

Data	Pump Size
Data	9	20	50	100	200	400	800
Max Capacity, l/min (*)	11	24	60	125	330	570	820
Volume / Stroke, ml (**)	13	50	87.5	280	933	2300	5125
Max Discharge Pressure, Bar	8	8	8	8	8	8	8
Max Air Pressure, Bar	8	8	8	8	8	8	8
Max-Dry Suction Lift, m (***)	1.6	2.5	2.5	3.5	4	4	5
Max Wet Suction Lift, m	8	8	9	9	9	9	9
Max Permissible ø of Solids, mm	2	3	4	6	10	15	15
Max Fluid Temp in PE, ºC	70
Max Fluid Temp in PTFE, ºC	100
Min Fluid Temp, ºC	-20

* = Recommended flow is half of the max flow, i.e. recommended flow for a T100 is 50 l/min

** = The value is based on pumps with EPDM diaphragms. Pumps with PTFE diaphragms produce approx. 15% less volume

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

Additional information

Drive Type	Pneumatic
Flow Rate	up to 820 l/min
Pressure	up to 16 Bar
Material	PE & PTFE
Self-Priming	Yes
Solids Handling	up to 15mm
Viscosity	0-200+ cSt

HDPE & PTFE Air Operated Double Diaphragm Pump

HDPE

PTFE

Technical Data

Performance Range

Additional information

HDPE & PTFE Diaphragm Pump Performance Curves

Looking for more information about Tapflo’s Solid Block HDPE and PTFE Diaphragm Pumps?

02380 252 325

About Tapflo