TECEfloor SLQ coupling with pressure sleeves for all-plastic pipes Pressure sleeve coupling for all TECEfloor all-plastic pipes, for permanent and O-ring-free connection, not suitable for AI composite pipes (Al/PE-RT), low pressure loss thanks to expansion technology. SLQ quality-controlled, compatibility tested and part of the DIN CERTCO-certified TECEfloor pipe systems. Item number: 77220016