Separation of sections of electrical wiring pipe systems using fittings with filling and PG-COMPAUND compound prevents the penetration of explosive gases, vapors or flames from one part of the Exd pipe section to another.

A compound-filled separating fitting should be installed as close as possible to explosion-proof ExD enclosures of distribution boxes, panels, control cabinets, and light fittings. Separating fittings are used to separate each internal volume of an individual ExD enclosure of the equipment, as well as from the internal space of the electrical wiring system.

To ensure explosion-proofness, the cable must be separated into conductors, and the separating fittings must be filled with PG-COMPAUND compound. To prevent leakage of the sealing compound before it hardens, the fitting is filled with non-flammable fiberglass.

Separation fittings filled with PG-KOMPAUND compound are designed to prevent the transfer of explosive mixtures through pipelines from one room to another, to transition between zones, and to separate and limit the internal volumes of explosion-proof electrical equipment. The special function of these separating fittings is to prevent fire and combustion products from entering pipelines carrying cables.