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TW Couplings with active Safeguard LeverTW couplings to DIN28450/EN14420 are normallyused with a VK male fitted to the pipe and a femaleMK attached to the hose end. - Available sizesDN 50, 80 and 100.TW couplings have been used in the industry formany years to transfer flammable and hazardousliquids. When correctly coupled, the coupling lockof the lever handle ensures that the parts arelocked tight and cannot be disconnected bypulsation or vibrations during operational use.The coupling assembly is positively locked byturning the MK lever handle and laying the handleflat with the assembly.Easy function:lay flat leverlockedautomatically.1If the lever is accidentally lifted (i. e. if it’s hookedor caught by objects), the locking can be disengagedand in such cases may rotate loose or disconnectcompletely during operation due to pulsation orvibrations.On customers request from the Chemical IndustryELAFLEX developed an active Safeguard Leverfor the female TW coupler to prevent such apossibility. When the lever lays flat with the couplingassembly the lever is automatically locked (picture 1).This locking is intrinsically safe and cannot beaccidentally disengaged. Only if the operator slipsback the slider (picture 2) can the lever be liftedand the coupling opened as usual. The MK couplingwith the active Safeguard Lever represents thehighest safety standard on the market.slip back sliderthenopen as usual.2The new MK couplings with active Safeguard Leverconform to the current standards and are fullycompatible.Part number for 3" female couplers of stainless steel:MK 80 SS with Safeguard Lever.Other dimensions under preparation.For details please contact ELAFLEX.Patent pending.Information 6.06May2006