This document stipulates the terms and definitions, product structure, basic requirements, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage and quality commitment of hydraulic flat butt type quick-change joints (hereinafter referred to as quick-change joints). This document is applicable to hydraulic flat quick-change joints that are connected or disconnected without pressure and have a working pressure of 20 MPa~31.5 MPa.
T/ZZB 3079-2023 history
2023T/ZZB 3079-2023 Connections for hydraulic fluid power－Flush-face type,quick-action couplings