Expansion Bellows
The Flexible Connectors can act as expansion bellows protecting the pipework from expansion and contraction caused by temperature variations. Additionally, they are the ideal solution to isolate the pipe system from pump vibration. Both of these applications can save the pipework from costly damage and downtime. If you need help selecting the right Flexible Connector, please contact us.
Selection
Prior to installation check you have selected the correct flexible connector for the application pressure temperature and media requirements.
Inspection
Before installing flexible connectors they should be checked for any damage internally and externally paying particular attention to the mating face. Make sure the sealing face is clean and free of debris as this will prevent sealing with the mating flange.
Installation
Flexible connectors should be installed at their natural length. If gaps are being left in the pipework for retro fitting make sure this gap conforms to the exact natural length of the connector. Pipework should be aligned before installation the connector is not designed to compensate for poorly aligned pipework.
The correct mating flange should always be selected and the sealing face checked for debris and any sharp edges as this could result in damage to the rubber. If faces of mating flanges have a different diameter a sealing gasket should be used to avoid damage to the rubber face. Flange bolts must be fitted with the bolt head nearest the connector to avoid damage to the rubber. Bolts must be tightened in a gradual manner tightening opposite bolts in turn. Do not over tighten a
s this will result in leakage. It is prudent to check tighten the bolts after seven days.
Anchoring
It is essential that flexible connectors are anchored to protect adjacent pipework and plant. Fig 1 shows how to anchor pipework in close installation to pumps. Selection of tied rubber flexible connectors should be considered above 100mm when the pressure is greater than 2.5 bar.
Maintenance
Many years of trouble free installation can be achieved with properly installed flexible connectors. It is essential they are used within their temperature pressure and media limitations. Periodic inspection of the rubber is advised to check for deterioration and flange bolts checked for correct tightness. The rubber should never be painted as this could damage the rubber and lead to reduced performance and service life.
Selection
Prior to installation check you have selected the correct flexible connector for the application pressure temperature and media requirements.
Inspection
Before installing flexible connectors they should be checked for any damage internally and externally paying particular attention to the mating face. Make sure the sealing face is clean and free of debris as this will prevent sealing with the mating flange.
Installation
Flexible connectors should be installed at their natural length. If gaps are being left in the pipework for retro fitting make sure this gap conforms to the exact natural length of the connector. Pipework should be aligned before installation the connector is not designed to compensate for poorly aligned pipework.
The correct mating flange should always be selected and the sealing face checked for debris and any sharp edges as this could result in damage to the rubber. If faces of mating flanges have a different diameter a sealing gasket should be used to avoid damage to the rubber face. Flange bolts must be fitted with the bolt head nearest the connector to avoid damage to the rubber. Bolts must be tightened in a gradual manner tightening opposite bolts in turn. Do not over tighten a
s this will result in leakage. It is prudent to check tighten the bolts after seven days.Anchoring
It is essential that flexible connectors are anchored to protect adjacent pipework and plant. Fig 1 shows how to anchor pipework in close installation to pumps. Selection of tied rubber flexible connectors should be considered above 100mm when the pressure is greater than 2.5 bar.
Maintenance
Many years of trouble free installation can be achieved with properly installed flexible connectors. It is essential they are used within their temperature pressure and media limitations. Periodic inspection of the rubber is advised to check for deterioration and flange bolts checked for correct tightness. The rubber should never be painted as this could damage the rubber and lead to reduced performance and service life.
