Pipe Fitting Selection Guide

04 Nov.,2024

 

Pipe Fitting Selection Guide

Pipe Fitting Selection Guide


Pipe fittings are available in various shapes, sizes and materials. Used to connect pipes of different lengths and sizes, these pipe fittings and flanges should make the right connections. Pipe and pipe-fittings are produced from a various materials for the transport of wide variety of solids and fluids. The wrong pipe fittings can lead to many problems like:

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  • leaks
  • unwanted flow restrictions and
  • extra cost

The proper pipe fittings and flanges let your equipment do the work that you intend it to do. The various types of pipe fittings include adapters, bulkhead fittings, plugs, rigid couplings, flexible couplings, 90 degree elbows, 45 degree elbows, reducing elbows, flanges, nipples, concentric reducers, eccentric reducers, side outlet tees, standard tees, reducing tees, bullhead tees, unions, standard wyes, reducing wyes and many more. You should select the right fitting for your application among the wide range of fitting types and sizes offered.
Common points to consider:
The integrity of any fitting for proper functioning depends upon the following:
  • Selection of correct components or fittings appropriate for the application
  • Careful preparation and cleaning
  • Careful installation and assembly
  • Correct tightening and loading
Selecting Your Pipe Fittings:
The points to consider are as follows:
  • Consider the Tubing Used: For instance, barbed fittings work better in flexible tubing while compression fittings work best with rigid tubing.
  • Determine Material Compatibility: Material selection plays a vital role in the proper working of fittings. There are certain fluids which are not compatible with fitting material and these fittings cause leakage or system damage. It is very essential to check the material compatibility of your fluid with any chemicals.
  • Check Temperature and Pressure Conditions: Appropriate temperature and pressure ratings are needed for proper operating conditions. It is necessary to know whether the fittings are capable of performing at their maximum temperature and maximum pressure ratings because most fittings cannot perform both the task simultaneously.
Some popular fitting types:

Barbed Fittings:

They slide into soft tubing. For low-pressure installations, tubing elasticity holds the tubing onto the fitting.

They slide into soft tubing. For low-pressure installations, tubing elasticity holds the tubing onto the fitting.

Threaded Pipe Fittings:

These are the most commonly used fittings based on certain standards. For instance, there are threaded fittings of pipes in BSP (British Standard Pipe), NPT (National Pipe Taper), UNF (Unified Fine Thread) sizes for permanent, high-pressure pipe connections.

These are the most commonly used fittings based on certain standards. For instance, there are threaded fittings of pipes in BSP (British Standard Pipe), NPT (National Pipe Taper), UNF (Unified Fine Thread) sizes for permanent, high-pressure pipe connections.

Cam Fittings:

They are considered to be quick-disconnecting fittings which are used with pipes and hoses. For instance, you can connect a female coupler to a male adapter and for a secure connection, pull down the arms. These fittings are capable of withstanding high-pressure applications.

They are considered to be quick-disconnecting fittings which are used with pipes and hoses. For instance, you can connect a female coupler to a male adapter and for a secure connection, pull down the arms. These fittings are capable of withstanding high-pressure applications.

Quick Disconnect Fittings:

These fittings make and break tubing connections without separating tubing from fitting.

These fittings make and break tubing connections without separating tubing from fitting.

Chromatography Fittings:

These fittings are designed for HPLC and other high-pressure applications and they can withstand pressures as high as psi.

These fittings are designed for HPLC and other high-pressure applications and they can withstand pressures as high as psi.

Compression Fittings:

These fittings have a nut that compresses rigid tubing against fitting body and are mainly used for high-pressure applications.

These fittings have a nut that compresses rigid tubing against fitting body and are mainly used for high-pressure applications.

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Pipe Thread Sizes:
This is a very important consideration for any pipe fitting. All pipes were manufactured with specification of a standardized outside diameter (OD) and wall thickness which in turn implies that the nominal pipe size is approximately equal to the inside diameter (ID). Nowadays, various thread configurations are used. We give below an example of British Standard Pipe (BSP) fittings for connecting systems that use both NPT and BSP thread configurations. The table shows a comparison of these two thread styles.

Size

Threads per inch

 

NPT

BSP

1/8" 27 28 1/4" 18 19 3/8" 18 19 1/2" 14 14 3/4" 14 14

To sum up: Selection criteria for buyers:
  • Materials
  • Pressure Ratings
  • Design and operation
  • Safety information
  • Temperature

Buyer's assistance:
Before purchasing pipe fittings and flanges, certain questions need to be answered for that particular pipe fitting and the manufacturer who is manufacturing that particular fitting. Some of these questions are as follows:
  • Can it handle pressure?
  • Can it handle high temperature?
  • Does it have proven long-term performance?
  • Are the joints or seals reliable?
  • Can it be fitted properly?
  • Does it have confidence of manufacturers?
  • Can it withstand outdoor storage and ultraviolet rays?
  • Can it resist punctures and abrasion?
  • Does it have widespread approval and acceptance from inspectors and engineers?
  • Does it have quality and value?
The more the number of &#;YES&#;, the better is your product.

The proper pipe fittings and flanges let your equipment do the work that you intend it to do. The various types of pipe fittings include adapters, bulkhead fittings, plugs, rigid couplings, flexible couplings, 90 degree elbows, 45 degree elbows, reducing elbows, flanges, nipples, concentric reducers, eccentric reducers, side outlet tees, standard tees, reducing tees, bullhead tees, unions, standard wyes, reducing wyes and many more. You should select the right fitting for your application among the wide range of fitting types and sizes offered.The integrity of any fitting for proper functioning depends upon the following:The points to consider are as follows:This is a very important consideration for any pipe fitting. All pipes were manufactured with specification of a standardized outside diameter (OD) and wall thickness which in turn implies that the nominal pipe size is approximately equal to the inside diameter (ID). Nowadays, various thread configurations are used. We give below an example of British Standard Pipe (BSP) fittings for connecting systems that use both NPT and BSP thread configurations. The table shows a comparison of these two thread styles.Before purchasing pipe fittings and flanges, certain questions need to be answered for that particular pipe fitting and the manufacturer who is manufacturing that particular fitting. Some of these questions are as follows:The more the number of &#;YES&#;, the better is your product.

How to choose a fitting? [A Hawle guide to pipe connections]

02-2

System connections are unique mechanical pipe fittings designed to attach water pipes made of plastic, such as HDPE/PE/PEX and OPVC/PVC.

There are still many pipes older than a century in several European cities that need to be replaced because of significant leakage rates. When these pipes fail, they are frequently replaced by PE and PVC pipes, as they offer lower failure rates than other materials. To meet this need, Hawle offers System pipe connections that are perfect for plastic pipes. System pipe connections are attached to the pipes using a brass grip ring with teeth elements, providing a restraint connection for plastic pipes.

Compared to other pipe laying technologies like PE-welding, for the System installation, no special tools or machinery or specially trained personnel are needed. Cold, rainy weather or groundwater in the pit also do not affect the fast and safe System assembly. In addition to that, Hawle has a certificate from an external independent institution &#;100 Years Expected Lifetime&#;.

Among other valve manufacturers of comparable mechanical connections for PE pipes, Hawle offers one of the broadest product pallets with System : Pipe connections, bends, couplings, end caps, combi- and gate valves, suited for all types of installations are all part of the Hawle System offering. System diameters might be as little as d63 or as large as d630, depending on the product.

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