I noticed they did the same across the gardens, running what is the equivalent of 1/2" yellow plastic through 3/4 and 1" iron main pipes to each house. One house has what looks like a 1 1/4" iron main pipe (looks like original 60s or 70s), at the meter it has what looks like a 1 1/4" to 1" reducer, a small short piece of 1" steel pipe, then a 1" to 3/4" reducer, with two, what looks like a 1/4" plugs in the 1" to 3/4" fitting, with then short piece of 3/4" steel pipe and then a brass maintap on that.
Does anyone one know what the "two" plugs are for? How did they connect the plastic onto the house meter? Connecting onto the 1 1/4" steel pipe under the ground?
Will a house that has a large combi using a 1" main gas pipe be OK with a 1/2" mains plastic gas pipe? 1/2" looks way undersized to me. If ant of these house upgrades to a larger higher water flow combi will they be in problems?
All this plastic gas mains looks like a cheap way of upgrading the mains for the gas company's benefit, not for the benefit of the house who may be short changed on a gas supply.