HDPE & PTFE Air Operated Double Diaphragm Pump

Benefits of the range include:

• Self-Priming capabilities up to 5m from dry and 9m when wetted
• A range of pneumatic accessories to support the pumping process, control & maintenance of the pump. The full range has been designed and manufactured in the UK by our team.
• Discharge Pressure up to 8 Bar as standard or 16 Bar when system features a booster
• Air Operated – simple to install and intrinsically safe. ATEX rated HDPE/PTFE Pumps available.
• 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.
• Lubricant-free air distribution system
• Various installation options including flooded, self-priming & submerged
• Various configurations are available including pumps with twin inlet and/or outlet ports, Barrier Diaphragm Pumps and Filter Press options to name a few.
• Features a no-nut, clean face diaphragm which aids in extending the life of the diaphragms. The layers of the diaphragm are chemically bonded rather than being held together with a nut, like many of our competitors’ diaphragms. No-nut reduces the risk of leakage and means the diaphragms are easy to clean.

Tapflo’s 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

*** = 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.

* = 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

HDPE & PTFE Diaphragm Pump Performance Curves