What is PTFE?
Polytetrafluoroethylene ( PTFE) is a Fluoropolymer that has a large number of industrial applications because of its many properties. One brand name for PTFE is Teflon®, which is well-known for its non-stick and heat-resistant properties.
What makes PTFE so useful?
The properties that make Polytetrafluoroethylene or PTFE so useful include: Its properties mean that we commonly know it as a non-stick coating for cookware (where its inertness & heat resistance are of particular importance . PTFE was an accidental discovery, made in 1938 by a DuPont engineer who was working on refrigeration.
How many microns does PTFE need to be to be coated?
The coating will then be heated in an oven to form a dry coating. It will typically be 15 to 35 microns depending upon the customer specification and the number of coats of PTFE that have been applied.
How many coats of PTFE?
This is primarily done with two coats (a primer & a top coat). The PTFE coating is applied to areas where either a low friction, a corrosion-resistant or a dry lubricant is required. To coat a product with PTFE, it will need to be prepared first of all.
When was PTFE invented?
PTFE was an accidental discovery, made in 1938 by a DuPont engineer who was working on refrigeration. That happy accident led to the creation of an industry.
Is PTFE a good insulator?
It is an excellent electrical insulator – this is why it is often used on printed circuit boards and electrical cables. There are some disadvantages to PTFE which give the product some limitations. For example, when overheated, it can release mildly toxic fumes.
What is PTFE line?
The PTFE Lined Plug Valve uses a cylindrical or tapered plug to stop or trigger a flow. The plug-passage is in an open position, with the inlet and outlet ports on one side The solid part of the plug blocks the port and stops flow if the plug is rotated from the open position.
What is PTFE ball valve?
A PTFE Lined Ball Valve is a quarter-turn rotational motion valve that controls flow using a ball-shaped disk. When the valve is opened, the holes in the ball remain in line with the body inlet which allows contents to flow. PTFE Lined Ball Valves, which are primarily used for air, gases, and liquids, are quick to turn on and off and have a strong low torque seal. The only downside to these valves is the lack of throttling properties available.
What is a PTFE lined valve?
Lined valves are a safe and reliable solution to any level of corrosion flow for chemical industrial. The lining of the valves and fittings ensures extremely high chemical resistance and longevity. PTFE lined valve and PFA lined valves are the commonly used valves that used as more economic alternatives to high-grade alloys in corrosive ...
What is PTFE made of?
PTFE (Teflon) is a polymer compound formed by the polymerization of tetrafluoroethylene with excellent chemical stability, corrosion resistance, sealing, high lubrication and non-viscosity, electrical insulation and good aging resistance for media such as strong acid, strong alkali, strong oxidant.
What are the properties of PFA and PTFE?
PFA and PTFE have similar chemical properties: excellent mechanical strength and stress-cracking resistance. The features of good molding performance and wide processing range made it’s suitable for molding, extrusion, injection, transfer molding and other molding processing, can be used for making wire and cable insulation sheath, ...
Is PFA a good resin?
PFA has similarly excellent performance as PTFE but superior to PTFE in terms of flexibility, which is the more popularly known form of Teflon. What distinguishes it from the PTFE resins is that PFA is melt processable. PFA has a melting point of about 580F and a density of 2.13-2.16 (g/cm3).
Is PFA valve better than PTFE?
In general, the combined performance of PFA lined valves is much better than PTFE lined valves. PTFE valve is more common and popular due to its cheaper cost, PFA is more often used in industrial applications, particularly industrial tubing and valves. PFA lined valve guarantees high sealing performance in the large range of pressure and temperature difference and is suitable for transportation of liquid and gas media in various industrial pipelines, such as sulfuric acid, hydrofluoric acid, hydrochloric acid, nitric acid and other highly corrosive media.
Why do you need PTFE lined fittings?
Why do you need PTFE lined pipe fittings? Line pipes systems are widely used in the most of the Chemicals , Petrochemicals , Food industries , Pharmaceuticals .Due to the highly acidic and corrosive nature of these chemicals, they have a tendency to corrode and corrode the steel piping which are used as conveyors,making ...
What is a pipe fitting?
Pipe fittings are made of seam steel pipes. Due to process requirements, the effective diameter of the pipe inside the lining is smaller than the nominal diameter of the steel pipe. Designers and users determine the diameter of the steel pipe after necessary effective flow standards.
Why use fluoropolymers in piping?
Corrosion engineers realise the long-term benefits associated with using high performance fluoropolymers to prevent corrosion in process piping systems. Lined pipes and fittings have excellent temperature resistance and corrosion resistance. It is ideal for the transportation of strong corrosive media such as nitric acid, sulfuric acid, ...
What is PTFE hose?
PTFE hose is used in stainless steel hose so the hose lasts much longer than rubber hose or rubber encased in stainless steel. It has many benefits over rubber products.
What is nylon braided hose?
Nylon braided hose – PTFE – helps to prevent gas odors from permeating the hose itself and allowing odors in your shop or garage. This type of hose resists all types of fluids and chemicals, including gas, ethanol, transmission fluid, brake fluid, power steering fluid and antifreeze.
