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Applications And Benefits Of PTFE Products


Polytetrafluoroethylene (PTFE) is a form of thermoplastic resin that is resistant to practically most of the corrosive services. It is one of the best materials for diaphragm pump because of its chemical stability and resistance.

Polytetrafluoroethylene (PTFE) is a durable and flexible elastomer of average tensile strength but remarkable chemical resistance, as well as excellent thermally and electrically resistive properties. At a molecular level, PTFE consists of a chain of carbon atoms with two fluorine atoms bonded to each carbon. These fluorine atoms surround the carbon chain, creating a dense molecule with very strong carbon-fluorine bonds and a polymer structure that is inert to most chemicals.
PTFE diaphragms have been one of the most thriving components that have lead to a breakthrough in the pump industry. They have been widely produced and are extremely successful in various industries across the globe. Following the pump industry:

A peristaltic pump or hose pump is a type of positive displacement pump used in various industrial applications for pumping variety of fluids. The fluid is contained within a flexible tube (i.e Hose) fitted inside the pump casing having no contact with any other part of the industrial hose pump. A rotor having rollers attached to the external circumference compresses the flexible tube in the peristaltic pump. As the rotor revolves, compression motion forces the fluid to move through the tube.

Applications or Uses of PTFE Diaphragm:

The PTFE the diaphragm has been widely accepted by all the consumers because of its stability and resistance. However, the most common consumers of the diaphragm are:

Neoprene: 

An excellent general purpose diaphragm for use in nonaggressive applications such as water-based slurries, well water or sea water. Exhibits excellent flex life and low cost.

Buna-N: 

Excellent for applications involving petroleum/oil-based fluids such as leaded gasoline, fuel oils, hydraulic oils, kerosene, turpentine, and motor oils.

EPDM: 

Excellent for use in applications requiring extremely cold temperatures. It may also be used as a low-cost alternative for pumping dilute acids or caustics.

Viton: 

Excellent for use in applications requiring extremely hot temperatures. Viton may also be used in aggressive fluids such as aromatic or chlorinated hydrocarbons and highly aggressive acids. PTFE would normally be used with these aggressive fluids as its flex life are better than Viton; however, in applications involving SUCTION LIFT (meter) outside the range of PTFE, Viton will be the the preferred choice for highly aggressive fluids.

PTFE: 

Excellent choice when pumping highly aggressive fluids such as aromatic or chlorinated hydrocarbons, acids, caustics, ketones, and acetates.

Benefits of PTFE Diaphragm Over Other Materials Are:

·        Intense heat resistance
·        Intense chemical resistance
·        Intense steam resistance
·        Lowest coefficient of friction
·        Partially Flexible
·        Non-toxic
·        Odorless and tasteless
·        Can be sterilized
·        Steam-proof
·        FDA approved for food applications

Antlia specializes in PTFE lined Rubber Diaphragms (0.25mm, 0.5mm, 1.00mm lining thickness) as well as Pure PTFE Rigid (up to 3mm thickness) Diaphragms for all kind of pumps, like AODD Pump, and Hose Pump and actuators used in critical corrosive applications. The Rubber used with PTFE Linings are Neoprene, EPDM, Butyl, and Hypalon.

Antlia PTFE Lined Diaphragms are made from size ranging from 12mm to 600mm Diameter in various shapes. The diaphragms have been tested up to 6kg/cm2 and operated up to 1000 cycles. These diaphragms are not suitable for vacuum service and high pressures.

We are involved in the manufacturing of a comprehensive assortment of industrial rubber components. These industrial rubber components find wide application in several engineering and other heavy industries and are known for their features of resilience and high tensile strength. We undertake the customization of these industrial rubber components in accordance to their application or the demands of our clients.
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