survevalumasina survekambrit ja vormiõõnsust ühendav osa, mille kaudu sulametall pressitakse survevaluvormi (vt survevalu; survevaluvorm; survevalumasin), the opening through which molten metal enters the injection cylinder of a die casting plunger machine, or is ladled into the injection cylinder of a cold chamber machine (see: die casting; die-casting die; die-casting machine)