Specifications Special steel (Bright chromate conversion coating : silver) Body material Size (Thread) 280 Cupla For hydraulic pressure up to 27.5 to 31.5 MPa {281 to 321 kgf/cm2} Working pressure Valve structure Applicable fluids Seal material Working temperature range Working temperature range Seal material Nitrile rubber Size (Thread) Two-way shut-off Generic Cupla copes with high pressure lines in hydraulic equipment! Low pressure loss is ideal for hydraulic equipment. • Complys with international standard ISO 7241-1A. • General purpose hydraulic Cuplas with the working pressure up to 27.5 to 31.5 MPa {281 to 321 kgf/cm2}. • Structure keeps pressure loss extremely low, particularly ideal for hydraulic applications requiring high flow rates. • Both socket and plug have built-in automatic shut-off valves to prevent fluid spill out when disconnected. Easy to handle. • Special steel body material is adopted for its excellent strength and additional quenching treatment is done to withstand hydro pressure impacts. Working pressure Flow Direction Fluid may flow in either direction from plug or from socket side when coupled. Interchangeability Different sizes cannot be connected. (mm2) Min. Cross-Sectional Area Model Suitability for Vacuum Socket only Plug only When connected Admixture of Air on Connection Admixture of air may vary depending upon the usage conditions. Model Flow Rate – Pressure Loss Characteristics [Test conditions] • Fluid : Hydraulic oil • Temperature : 30˚C 5˚C • Fluid viscosity : 32 x 10-6 m2/s • Density : 0.87 x 103 kg/m3 Flow rate in L/min Precautions for use There is no interchangeability between 280 Cupla and HSP Cupla or 210 Cupla. Do not connect each other even if some siz

WAF : WAF stands for width across flats. Models and Dimensions Plug Female thread Socket Female thread * Internal structural design of 280-6S and 280-8S is partly different from the above drawing. Hydraulic pressure control equipment Hydraulic pressure control.equipment Before use, please be sure to read "Safety Guide" described at the end of this book and "Instruction Sheet" that comes with the products.