Pump Repair Parts

What are flanges?

Flanges are used to connect pipes to pumps, valves, and other components. They come in a variety of shapes and sizes to specifically suit different applications. Flanges can be made of such materials as bronze, cast-iron, stainless steel, and brass.

Below you will find a brief description of some of the more common types of flanges.


Types of flanges

Slip On Flange

Slip on flanges are slipped over a pipe and fillet welded from both the inside and the outside to strengthen the connection. These flanges are suitable for low temperature and pressure applications. Slip on flanges come at a low cost and require less accuracy when cutting a pipe to length.


Threaded Flanges

Threaded flanges are fast and simple to attach. Threaded flanges are similar to slip on flanges however the bore is threaded which allows for assembly without welding. This type of flange is not suitable for high pressure and high temperature applications.


Lap Joint Flange

Lap joint flanges are divided into two parts, a stub end and loose backing flange. The stub end is butt welded to a pipe and the backing flange can move freely over the pipe. Lap joint flanges are used in applications where space is minimal and intermittent dismantling is necessary for fixes and inspection.


Welding Neck Flange

Welding neck flanges are designed to be joined to a piping system by butt welding. They tend to be more expensive but are suited for high pressure applications as they feature the greatest joint integrity. Pressures are transferred from the flange to the pipe. The inner diameter of the flange matches the piping’s diameter, which also reduces turbulence and erosion.


Socket Weld Flanges

Socket weld flanges are similar to slip on flanges. Pipe is fitted into the female sockets and fillet welded around the hub of the flange. Socket weld flanges are preferable for smaller pipes and high pressure applications. An internal weld can be applied in certain extreme pressure applications.


Blind Flange

Blind flanges do not feature bores and are used to seal an end of a piping system or opening. They are most common when easy access is needed for inspection.

Flanges are an absolute necessity for ensuring the smooth operation of your system. Visit our accessory section to see the multitude of flanges Pump Products carries from the most trusted brands in the industry.


For more info contact water pump suppliers in uae or call us at +971 4 252 2966


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