Straub Grip L Couplings Truco supplies the full range of Grip L couplings from Straub in South Africa and Africa. They are standard-duty, pull out resistant pipe couplings for all metal pipes, and are designed and constructed to the highest standards. Grip L couplings are ideal for all qualities of water, wastewater, gas and air, acids, fuels, chemical products and solids. The range also includes a stepped coupling version and fire resistant couplings for explosive environments: the FF (Fire Fence) series. Self-anchoring Resist axial force Detachable and reusable Diameter: 26.9 to 711.2 mm (406.4 mm on fire resistant versions) Temp. range FPM/FKM sealing sleeves: -20° to 180° C Temp. range H-NBR sealing sleeves: -20° to 180° C Pressure: 46 bar Manufactured to DIN 86128-1 and 86128-2 directives