The TK23 CNG defuelling nozzle is designed specifically for evacuating and discharging CNG of cylinder bundles (e.g. on trailers). The type TK23 CNG is equipped with a pin, which opens the check valve in the type TN5 CNG receptacle (without filter) and releases the flow. Now the CNG can be discharged from the cylinder bundles. Connecting and disconnecting can only occur in depressurised condition. The TK23 CNG is not equipped with an integrated check valve. The WEH® TK23 CNG defuelling nozzle is suitable for WEH^® receptacles TN5 CNG without filter and with PEEK seal (see accessories).