QLV
Fittings according to british standard - stubs.
Serrated face stub with solvent weld socket, for use with stubs QLV and flat gaskets QHV/X and QHV/Y (QHV/Y only when coupling to ISO/DIN “ODV and ODB” flanges).
Series of fittings for pipes conveying fluids under pressure with solvent weld and threaded joints according to British Standard.