Gas non return valve
https://www.lt-gasetechnik.de/wp-content/uploads/2017/08/gasrücktrittventil.jpg 878 494 Alexander Hanf Alexander Hanf https://secure.gravatar.com/avatar/f89f4d10a36f5d89cef53cf152aa4130?s=96&d=mm&r=gThe gas non return valve from LT GASETECHNIK protects ring lines, tapping points or large…
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