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twin valve

Alfa Romeo Twin Spark (TS) technology was used for the first time in the Alfa Romeo Grand Prix car in 1914. In the early 1960s it was used in their race cars (GTA, TZ) to enable it to achieve a higher power output from its engines. And in the early and middle 1980s, Alfa Romeo incorporated this technology into their road cars to enhance their performance and to comply with stricter emission controls.

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  1. C

    Twin valve microbore on new pressure boiler

    Last year we had a new pressurised system put in and left our existing rads in place. Downstairs are all fairly modern rads with TRVs etc however upstairs are still the original rads from 1980 with 8mm microbore and twin valves, no TRVs. I'm looking for some advice really on where or not we...
    • Chris Stevens
    • Thread
    • boiler microbore new pressure rad valve radiator twin valve valve
    • Replies: 0
    • Forum: Australia
  2. T

    Removing twin valve radiator temporarily

    Hi ALL, I need to remove two twin valve radiators temporarily so I can decorate. There's limited info about this type of rad online, except to say they're rare and a bit old fashioned. In my case, the ones I have also have an extra pipe running up from the twin valve fitting which I have...
  3. D

    twin valve rad

    hi all. i want to remove an old rad with a twin vale. want to know how to shut off the flow & return, does the one valve shut down both pipes as i dont want drain the whole system, done loads of normal rads in the past i.e lockshield on both ends, but never one of these, thanks.
    • davtherav
    • Thread
    • drain flow head pipes radiator remove return system twin valve valve water
    • Replies: 4
    • Forum: Plumbing Jobs | The Job-board
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