Fittings and valves are commonly connected to ductile iron pipes using either flanged connections or mechanical joints. Flanged connections involve the use of circular discs called flanges, which have evenly spaced holes around the edge. These flanges are bolted together to create a tight seal between the pipe and the fitting or valve.
To connect a ductile iron pipe to a fitting or valve using a flanged connection, the pipe end is first prepared by cleaning and removing any rough edges. Then, a gasket made of rubber or another suitable material is placed between the pipe end and the flange face. The flange is aligned with the pipe, and bolts are inserted through the holes in the flange, passing through corresponding holes in the fitting or valve.
Once all the bolts are in place, they are tightened evenly, gradually applying pressure to compress the gasket and create a secure, leak-proof seal. To ensure proper alignment and sealing, the bolts are typically tightened in a specific pattern or sequence.
Alternatively, mechanical joints can be used to join ductile iron pipes to fittings and valves. This involves inserting a rubber gasket or gland into a groove on the pipe end. The fitting or valve also has a corresponding groove, and when the two are brought together, the gasket is compressed to create a tight seal.
Mechanical joints offer some flexibility, allowing for slight movement or expansion and contraction of the pipe. This is beneficial in applications where there may be thermal variations or ground movement, as it reduces the risk of pipe failure.
Both flanged connections and mechanical joints are widely used in various industries and applications that require the connection of ductile iron pipes to fittings and valves. The choice of joining method depends on factors such as the specific application, pipe size, pressure requirements, and local codes and regulations.
Ductile iron pipes are typically joined to fittings and valves through a process known as flanged connection or mechanical joint. Flanged connections involve the use of flanges, which are circular discs with evenly spaced holes around the perimeter. These flanges are bolted together, creating a tight seal between the pipe and the fitting or valve.
To join a ductile iron pipe to a fitting or valve using a flanged connection, the pipe end is first prepared by cleaning and deburring any rough edges. A gasket made of rubber or other suitable material is then placed between the pipe end and the flange face. The flange is aligned with the pipe, and bolts are inserted through the holes in the flange, passing through corresponding holes in the fitting or valve.
Once all the bolts are in place, they are tightened evenly, gradually applying pressure to compress the gasket and create a secure and leak-proof seal. To ensure proper alignment and sealing, tightening the bolts is typically done in a specific pattern or sequence.
Alternatively, ductile iron pipes can also be joined to fittings and valves using mechanical joints. This involves the use of a rubber gasket or gland that is inserted into a groove on the pipe end. The fitting or valve also has a corresponding groove, and when the two are brought together, the gasket is compressed, creating a tight seal.
Mechanical joints offer some flexibility, allowing for slight movement or expansion and contraction of the pipe. This can be beneficial in applications where there may be thermal variations or ground movement, reducing the risk of pipe failure.
Both flanged connections and mechanical joints are widely used in various industries and applications that require the joining of ductile iron pipes to fittings and valves. The choice of joining method depends on factors such as the specific application, pipe size, pressure requirements, and local codes and regulations.
Ductile iron pipes are typically joined to fittings and valves using mechanical joint or push-on joint methods. The mechanical joint involves using a gland and a rubber gasket to create a tight seal when the pipe is bolted to the fitting or valve. On the other hand, push-on joint method uses a rubber gasket that is compressed when the pipe is pushed into the fitting or valve, providing a secure connection without the need for bolts or additional hardware.
