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Plumbing

110mm Soil pipe connector won't fit iron soil pipe with flange

Anonymous user 03/03/2024 - 3.15 PM

We are installing a shower on the ground floor and have bought a drain connector to connect to our soil pipe where we have cut our existing iron soil pipe. This is the connector: http://mcalpineplumbing.com/plastic-chrome-fittings/drain-connectors-boss-connectors-roof-flashing/dc1-bl-boc-drain-connector-boss Unfortunately the connector will not push all the way down because it's too tight with the flange. The fit would be really tight without the flange. Would it be better to push it down with some sealant instead of the flange? We really need it to be as low as possible to get good flow from our shower waste.

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3 Answers

Anonymous user

The link you have given is not clear. Is it a external coupler known as a Johnson coupler with jubilee metal tighteners top & bottom? Yes always use a silicone lubricant/grease

Answered17 June 2017

D & R Property and Plumbing Maintenance

Rating: 4.9 out of 5

New Romney

is this a boss type connector or have you cut out a whole section of cast iron soil pipe ?,you should never put in plastic sections below cast iron,due to the weight of cast iron above most old cast iron soil stacks are held to wall with spikes when these give way which the will do at some point the plastic will give way and the stack could fall,timesaver couplings boss pipes and branches are what you need easy to fit and no problem with weight of soil stack above as these are iron.

Answered17 June 2017

DB Sewerage Solutions

Rating: 5 out of 5

Bristol

You can use a in2 spiggot or a bandseal will likely work.

Answered10 November 2021