Gasventil von Resideo: VDE20B4.0M, 2WVS, EXT, DN20, PN16, KVS4.0, MOD

Resideo gas valve model VDE20B4.0M, designated 2WVS EXT. It is a two-way valve with DN20 nominal diameter, PN16 pressure rating, and flow coefficient KVS 4.0. The M suffix indicates a modular version.