MODEL XGQT1 RIGID COUPLING The Lede Model XGQT1 is a T&G (tongue & groove) design rigid coupling for moderate pressure applications where rigidity is required including value connections, mechanical rooms, fire mains and long straight runs. The built-in teeth and T&G mechanism firmly grasp the pipe ends to eliminate undesired. Support and hanging reguirements correspond to ANSI B31.1, B31.9 and NFPA 13. Sizes available: 32mm-300mm / 1-1/4’’~12’’ Working Pressure: Up to 20 bar / 300 psi