See all products of Fittings - threaded connections 23 p. 1.5 DARCAL, Fitting for multilayer plastic pipe for continuous high temperature use. DARCAL, Self-adjustable diameter fitting for single and multilayer plastic pipes. DARCAL, Self-adjustable diameter fitting for single and multilayer plastic pipes. Mechanical fitting, monobloc, for soft annealed copper, hard copper and stainless steel pipes. Mechanical fitting for soft annealed copper, hard copper and stainless steel pipes.