"ef coupler" in German EF coupler Elektroschweißmuffe Elektromuffe Detailed translations for "ef coupler" EF coupler EF coupler(also: electrofusion sleeve, electrofusion fitting, electrofusion coupling) die Elektroschweißmuffe{feminine} EF coupler(also: electrofusion sleeve, electrofusion fitting, electrofusion coupling) die Elektromuffe{feminine}