"ef couplers" in German EF couplers Elektroschweißmuffen Elektromuffen Detailed translations for "ef couplers" EF couplers EF couplers(also: electrofusion sleeves, electrofusion fittings, electrofusion couplings) Elektroschweißmuffen{masculine plural} EF couplers(also: electrofusion sleeves, electrofusion fittings, electrofusion couplings) Elektromuffen{masculine plural}