I N N O V A T I O N A N D F L E X I B I L I T Y
T H E
I N S T A L L A T I O N A N D M A I N T E N A N C E T R A I N I N G M A N U A L
7.6 Gas Blocking Connectors
Gas blocking connectors are used at customer premise entry to prevent gas ingress. Microduct fi bre units can be blown through most fully open
gas block connectors, and then sealed by activating the screw cap.
A gas-block connector should be fi tted onto every microduct inside the building, at a distance no less than 2m from the building entry point (a
UK requirement) This would normally be where PE tubes connect to LFH (indoor) tubes. The GB connector can be installed inside any internal
box. Any unused m/ds should be sealed off with an end-cap to prevent gas entry into the building
7 Connectors
“This document is intended as a guide only. Whilst the information it contains is believed to be correct, Emtelle can take no responsibility for actions taken based on the information contained in this document. Emtelle reserves the
right to make changes to this document without notice. All sales of product are subject to Emtelle’s terms and conditions of sale only, which can be found on Emtelle’s website.”
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I N N O V A T I O N A N D F L E X I B I L I T Y
Turn the yellow ferrule to close the gap after
fitting to the m/d
Close gap after the microduct fibre unit has
been installed
Internal m/d
External m/d
Gasblock Procedure
1. Install the m/ds and the fi bre unit
2. Tighten the yellow cap to grip the outer m/d
3. Tighten the black cap to compress the rubber seal onto the fi bre unit.
The fi bre unit should now be gripped within the m/ds.
NB. It is not a grip that will prevent slow FU movement if under
tension, hence the use of L&B wherever FU is subject to movement
in-service
