Low cost diaphragms for pumps in modified PTFE
A
Tri-Ark product story
Edited by the Engineeringtalk editorial team
Feb 21, 2001
A new range of low cost diaphragms for air-operated double diaphragm (AODD) pumps manufactured from a specially modified PTFE material has been announced by Tri-Ark
A new range of low cost diaphragms for air-operated double diaphragm (AODD) pumps has been announced by Tri-Ark Ltd, a leading independent supplier of AODD pumps and components to UK industry.
With over 35 years experience in the pumping and chemical industry, Tri-Ark has been able to specify precisely the material used to give optimum performance.
The new diaphragms are manufactured from a specially modified PTFE material.
This particular formulation shows excellent resistance to aggressive fluids and has a wide operating temperature range.
The static and dynamic friction coefficient are numerically equal, preventing "stick slip".
Modified PTFE offers a number of benefits compared to normal (homopolymer) PTFE, and in particular for diaphragm applications, has good deflection characteristics.
This gives excellent durability and reliability in use and allows higher flow rates to be accommodated.
Pumps for which the Tri-Ark diaphragms are currently available are 1" and 2" SandPIPER pumps from Warren-Rupp and 1.5" and 2" AODD pumps from Wilden.
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