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It is most commonly chosen for pneumatic fittings because of its excellent performance and machinability. These types of fittings are ideally suited to a wide range of applications, such as industrial airlines, air tools, garages, robotics, automotive, textile, packaging, handling applications, and many more. Polypropylene is a thermoplastic that is widely used for pneumatic fittings, as it has high durability, low price and wide compatibility with other materials. Brands that can be found in widespread use across many industries and sectors today include: FestoFesto has an extensive range of fittings, such as pneumatic manifold tube-to-tube fittings, pneumatic pressure indicator function fittingsand pneumatic pressure relief valve function fittings. 0000007067 00000 n
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In many workplace environments, the power that a pneumatic system delivers can often prove more versatile, reliable, cost-effective and safer than an equivalent setup powered by various electric motors and actuators. Plastics are typically used for lower pressure systems whereas metal fittings may be required in higher-temperature applications or environments. It must be borne in mind that the ambient temperature of the inlet air to the compression unit will affect the compressed air output. 0000004958 00000 n
It can safely be used for applications in exposed areas, because it is resistant to weathering, ozone and UV radiation. Multiple leading brands are known for the manufacture and distribution of quality pneumatic fittings. trailer
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h RS ProWe also stock a range of pneumatic fittings from RS Pro, our in-house brand. This guide covers everything from the regulations to the best products available. 0000099868 00000 n
Polypropylene withstands UV radiation, is resistant to chemical attack and can be formulated for use in food-contact applications. _Iqiy]wP KL=}){P,
K&%\|V//qi}{/d=~CqEC/`Z hPdo 3vE|oH;h4"ErF3pG~ p2s1.|z>Alcj !tmq/j8mk If the correct operating pressure is not maintained, it could cause the whole system to fail, and components are likely to leak, break or lose their pressurised seal. 0000016816 00000 n
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A pipe in this context usually denotes a conduit constructed from more solid materials, often in a single layer or length, and generally seen as a better option for more permanent installations or runs. @C%fE"6p%i.3Bmeow"B?ef1.2hr8phDpd Kz83N4
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All Rights Reserved. 0000063233 00000 n
Always use straight runs wherever possible, and only use elbows and Ts if absolutely necessary. Although typically more expensive, stainless steel already has excellent corrosion and chemical resistance, with the durability and strength of ordinary steel. 0000068501 00000 n
This comprehensive guide examines the dangers of electrical equipment in factories and other industrial environments. When choosing your pneumatic fittings, there are some key environmental factors that must also be taken into account. Such contaminants in the air intake are commonly removed by the filtration system, usually comprising a filter-regulator-lubricator unit (FRL). Some of the most common include: This type is designed with speed and ease of assembly/disassembly in mind, but they are also built to provide a secure and reliable join. If above, it can lead to system failure through bursts and leaks. These fittings can be used in many varied roles, depending on the specific type of function performed. On: 23-09-2019 Read Time: 9 minutes - Guides - Pneumatics. 0000003151 00000 n
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Hose is designated by its internal diameter, and usually comes with rigid, swivel or quick-disconnect fittings that are attached at both ends. They also offer a range of more specialised products, such as pneumatic logic element function fitting. H\@E|E--l !y8 e)\b s"L}X{s4m==Z
Q_?4>O5b^~&>n2)KsK5|C-wM6c]|T$W#weas"7'HeTd|v!WkyG~g~9<9S9cs2[dYY-[7KedY,Y,Ked X,eg7["A?Xc. Polyurethane is flexible, strong, resistant to abrasion and kinks and can also withstand contact with oils and fuels. In these environments, the requirements for air purity are very strict, and may not allow for the use of compressors using oil-based lubricants. 0
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Pneumatic fittings are frequently rated for certain operational pressure ranges, based on the specifications of the equipment and what it is designed to do. The vast majority of these conduits are connected to each other - as well as to the various devices being powered - by a wide variety of pneumatic fittings, couplings, valves and adaptors. 0000028324 00000 n
LegrisLegris has a vast selection of fittings, includingpneumatic T fittings. 0000069559 00000 n
The table below shows nominal thread sizes with corresponding values. As a general description, a pneumatic fitting can be any type of connector designed to link components or devices in a sealed and pressurised dry-air system. 0000195068 00000 n
We have an array of common fittings, such as pneumatic T fittings, as well as more specialist fittings such as pneumatic silencer and exhaust restrictor function fittings. This type of fitting includes screw-down threading on either the inner (female) or outer (male) edge of the connector, which will be gauged to mate with matching threads on the end of a length of hose or conduit. f}i[+glz7HmHq"]6pr1lu2q5LPH+4@2f
-3E 6nLyV}tqX3c46(U31%F1`;>I>&TErdf@=&X:f;3\V7}t7nE7|2XXq5k>ZU9m{f;vS63} You will find a broad array of these fittings for sale online, covering a variety of different functions and connection types. The operating temperature specified by the manufacturer defines the range of temperatures or the operational temperature ratings within which the particular fitting is designed to work. 0000045553 00000 n
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Design standards are also applied to many products by the German Technical Control Board (TUV). FeE]60)lLE]wp5r$ C[PJ#2F-\vCgbKwrh,,9r'3-A,9-?,F:nFB~d0ApHz=abr&Rp XDAZLo+~eE.JU+:;6C>X+3Ebb|Hm~,bv[ .3j'j{6=b8h0kZ QGjI05b-&H"={]L|j. Elbow fittings change the flow direction at various angles without the risk of tube kinking. They also offer a large range of pneumatic fitting accessories. %PDF-1.5
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Although fittings may represent the minutiae of the overall pneumatic system design, they are perhaps the most important of all the elements. 0000008921 00000 n
This is typically a type of push-on fitting in which the hose or tube is pushed over a barbed end for initial grip, and then a knurled nut is tightened down around the pipe and barb to provide full security of the connection for use under air pressure. It is often designed to be replaced at fairly regular intervals due to general wear and tear. Hose is generally more expensive than tubing but is more rugged and durable, as it is often used for manual tools and gets dragged across abrasive surfaces. The most common type of push-in fitting features a collet or grab ring around the connection point, through which the hose or pipe slides and which then automatically grips and holds the tubing in place. They typically enable entirely tool-free connection and disconnection between various tubes, pipes and tools; ideal for fittings that will frequently need to be reassembled. 0000043179 00000 n
While the BCAS guidelines are based on the British Retail Consortium's global food safety standards (ISO 22000 / ISO TS 22002-1) there are also specific standards which relate to the provision of compressed air. D1VkN's Pneumatic tube is usually sized or gauged for fittings according to its outer diameter. 0000004364 00000 n
Pneumatic fittings are required in any kind of pressurised gas system to link together sections of tubing, pipe or hose. Compression fittings rely on compressive force to connect, and need no soldering to install. This guide provides practical advice on the legal requirements for employers and useful resources to ensure employees are working safely. 05220551 VAT No. '(X~w8s:?SbcE3\^cW"]wi& In general terms, every 5 F of temperature reduction produces a 1% improvement in efficiency and power conservation, but both high ambient air temperature and low intake pressures will significantly affect performance. A T-shaped intersection connects three flow sections, allowing flow to be split apart or combined. 0000140649 00000 n
Rowse Limited Trading as Rowse Pneumatics.Company No. Pneumatic elbow fittings are used to connect either single or multiple hoses and can allow the user to easily change the connections in a system for an assortment of tubes or pipes. PVC and CPVC (chlorinated polyvinyl chloride) is light and usually more flexible than polyethylene or nylon, with a good resistance to chemicals, and can sustain repeated sterilisation. Different materials will tend to have varying properties of their own, which will often dictate the best choice of fitting to use. 0000068009 00000 n
The most common air contaminants are water, oil and particulates, such as dirt, rust and metal shavings. 0000068201 00000 n
GB846844683, How To Choose The Correct Pneumatic Fittings, https://www.ryco.com.au/technical/thread-connector-identification/bspt-bspp-threads/, the specific environment in which your equipment will be working, the required air pressure or PSI specification of your equipment, any approvals that may be needed for the equipment and its components, the material(s) from which your fittings should be made, the type and size of tubing you will require, the type and size of thread your fittings will need. The lubricant also acts as a coolant in some types of compressor, but there is sometimes a danger of the heated lubricant getting back into the inlet air and causing contamination there. 0000064300 00000 n
These materials are also used in applications requiring high chemical resistance and temperature durability; they have a high melting point as well as low thermal and electrical conductivity. The tube is pushed as far as it can go over a barbed end on the fitting, and secured by tightening a nut onto the combined assembly. They are used to connect two lengths of tubing together, either straight or at an angle, and different types can be chosen to work with a range of materials such as nylon, polyurethane or polyamide conduit. 0000031701 00000 n
There are several ways to compress the fitting and most need no tools, but rely on a ferrule, ring or metal gasket to make the seal. Straight threads are the simplest, but tapered threads provide a better seal. 0000155469 00000 n
Aluminium fittings are commonly used for low pressure, low density applications where its low tensile strength is not an issue. hb```g` eaxG!~3|1}([J Pneumatic fittings, together with their pipes, hoses and tubes, connect all the other major components together, and can therefore have a major influence on the efficiency, safety and energy consumption of the entire system. 0000064002 00000 n
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The conduit size is measured in metric (mm) or imperial (inches), and proper sizing is critical, as over- or under-sized fittings will either be wholly incompatible or make an inadequate connection or seal. These fittings are characterised by having one threaded side and one with a tube connection, allowing for an assortment of hoses to be attached. 0000039311 00000 n
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Polyethylene and high density polyethylene (HDPE) are widely resistant to solvents and chemicals, and relatively cheap with good flexibility. ;bURd:3WW7
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_tWnAW}%AC$ RG T8V1m'f%u|}a]./_u]/Oa:i. f|,CZ:K0dg|1J1gb8Q`q4#. To maintain fittings quickly and efficiently to reduce production interruptions, Legris has also produced a range of pneumatic fittings maintenance kits. S+R>x\,iLc-TF0{cJr>l]+>W]q->O-J^
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Thread size is governed by standards, including BSP (British Standard Pipe) and NPT (National Pipe Thread), although there are many other international standards, and sometimes it depends on the industry and/or country of use. 0000017367 00000 n
Find out more about what pneumatic fittings are, how they are used, and what types are available in our guide. 0000019555 00000 n
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Why is machine safety so important? 0000003030 00000 n
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Fittings can be attached to a fairly wide range of conduit and device types - including hoses, tubing and pipe - at various points around air-powered systems. As air heats up or rises the pressure drops, so industrial automation equipment should generally only be used in a controlled temperature environment. HlW7WH]cFb1 =Y"oZr0AkRY$CjSIG[rhW0YKGymQ=m!`)C9%5r1&QD57p]pGGOMnaqgCq|>-8=meM)fSp|.u$77>cjwRQ]{)92pQ3\Lf2\ 27o,!1y Thread size is always measured and formulated on the interior diameter of the conduit and corresponds to a specific number of threads per inch (TPI). The equipment also needs to be stable with no possibility of vibration. 0000125830 00000 n
Threaded fittings have screw threads on the outer (male) or inner (female) surfaces, so that they can match other threaded fittings. 0000058736 00000 n
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This guide explores industrial health and safety, describing the main responsibilities and how to assess and prepare for key risks. When deciding how to choose the correct pneumatic fittings for your application, you should examine the different materials that are commonly used in order to determine their different physical properties, gas compatibility, and reaction to, for example, temperature changes. Pneumatic specifically denotes the delivery of power through controlled movement of pressurised gases (including air). This pressure range (in PSI, or pounds per square inch) is the one at which a pneumatic system will generally be running at its optimum level of performance. However, when choosing a specific fitting type, its also important to be mindful of the exact sort of conduit that you are pushing the compressed air through on either side of the fitting in question. _v8e;*vk2 E ob
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An inner tube is reinforced with one or more layers of spiral-wound or braided fibres, with a protective outer cover. When deciding how to choose your pneumatic fittings, you need also to determine what type and size of tubing or hose you will need, whether it is measured in metric or imperial sizes, and whether it's made of metal or thermoplastic. 0000009652 00000 n
It is important for the safety of your personnel, and the optimal performance of your equipment, that you comply with all relevant standards. Pipe is commonly graded or sized for fittings according to its inner diameter. The obvious counter-reference here would be hydraulic systems, in which motion is driven by liquids held under similar compression forces within a sealed system. 0000062101 00000 n
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These fittings are typically used in vacuum or pressure applications. 0000006548 00000 n
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For specialised environments, enhanced fittings can be engineered with additional protections such as integral lining, surface coating or plating, or special insulation. 0000061366 00000 n
In general terms, your system performance will suffer if it is operating at a pressure that is either above or below its specified operating range. Composites are fittings made from various material combinations, such as carbon, graphite and fibreglass. It seems simple, but it is essential to ensure that there is sufficient space around the installation to allow the best configured construction, as well as access for maintenance and repairs. Push-in fittings can be made from plastic or various metals. Push-in Fittings allow the tube to be secured by pushing it through a collet or grab ring and can be released simply by pushing a release collar. Some common examples include: These fittings are characterised by an angled joint, commonly 90 degrees (right-angle). 0000068174 00000 n
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Pneumatic power systems include any type of mechanised or automated processes or machinery in which motion is driven by pressurised gas or compressed air. If below, it is likely that the system won't function at all, since it has insufficient input energy. Post By: Ryan King Brass is also corrosion resistant, but much stronger and more durable, and it offers good conductivity and high temperature ductility. 0000072066 00000 n
Fittings sold with straight threading are intended to form a solid connection between parts, but not necessarily to form an air-tight seal on their own - this threading type will require additional sealant coating or a layer of Teflon tape for use in pneumatic applications. Shaped fittings ensure the effective design of a pneumatic system, with various unions and adaptors to reduce or increase the pipe diameter, or provide a neat continuity across fittings. 0000299353 00000 n
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They are available to be purchased in many different body materials, such as aluminium alloy, brass, copper, PBT and steel alloy. 0000086887 00000 n
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H\@yp$^O@h]o]5k!\}}1\XwKkz_4..S8cKi9IM~m._O8nrZ&jZKe/&oK\!l^p:Uw Bacteria and microorganisms are also a source of major concern. Knowing how to choose pneumatic fittings is therefore all about suiting the materials to the job and its environment. 0000007573 00000 n
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And in the first instance, you need to differentiate between tube, pipe or hose. When shopping for connectors and adaptors for this type of system, you will be presented with numerous options covering a wide variety of different assembly methods and styles. HWkoS~~BU! Pipes and hoses should be configured as simply as possible, so that no energy is lost in the air's passage through the system. A hose is typically understood to refer to a flexible type of conduit, constructed from multiple layers of robust rubberised or plastic material. Reducer fittings connect two or more conduits of differing sizes. 0000053950 00000 n
These standards govern all aspects of compressed air installation, from thermometers and pressure gauges to pipe supports, pipework and hoses. Tubing and hose may seem to be the same, but tubes are designated by their external diameter so as to be compatible with push-to-connect fittings. Cross-shaped fittings do the same for four flow sections. 0000070226 00000 n
The most common elbow angles are 45 and 90, but elbows also exist in 22.5. 0000225065 00000 n
Tubing in pneumatic systems is often something of a halfway house between hose and pipe; a relatively rigid option but with some degree of flexibility and aimed at less permanent setups than most conduit pipe assemblies. The British Compressed Air Society (BCAS), for example, has a best practice guideline offering useful guidance on compressed air equipment for the food and beverage industry, including its selection, installation and maintenance. Additional contaminants in the form of bacteria or microorganisms can also be critical in some types of application, such as pharmaceuticals or food. 0000060592 00000 n
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The Health and Safety Executive (HSE) publishes a comprehensive list of applicable safety standards for use of compressed air, including both BS, EN and ISO standards. 0000073906 00000 n
These systems and fittings are widely used today in all manner of industries and applications, ranging from construction, assembly and production line setups to a huge variety of industrial machinery, handheld tools and workbench equipment. It should be large enough to allow pipework to run naturally, and to permit a free flow of ambient air so the space doesn't overheat externally. 0000308751 00000 n
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In addition,we also offer a range of additional pneumatic products, including pneumatic tee tube-to-tube adaptors. 0000032535 00000 n
Pushing down on the collet with two fingers (or a quick-release tool) instantly disconnects the fitting from the tubing.
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