WEH® Defueling Nozzle TK21 CNG
Buses and trucks running on natural gas have to be serviced and checked regularly, a process involving the discharge of their pressurized fuel tanks.
The WEH® TK21 CNG defueling nozzle has been designed for this specific purpose.
The defueling nozzle is simply engaged onto the receptacle of the bus/truck and the knurled spindle fully turned until the receptacle is fully open. Discharge can now take place through the lateral media discharge vent.
Nominal bore (DN) | 8 mm |
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Pressure range | PS |
Temperature range | -40 °C up to +85 °C |
Design | With plastic thermal protection and opening spindle |
Material | Corrosion resistant |
Sealing Material | Natural gas resistant |
Weight | Approx. 2.1 kg (4.63 lbs.) |
- Discharge through the filling receptacle
- Knurled spindle actuation
- No additional locking device required
- Only suitable for WEH® TN5 CNG receptacles (without a filter)
- Plastic thermal protection
Defueling Nozzle for discharging of CNG fuel tanks of buses and trucks through the filling receptacle. Only to be used with WEH® TN5 CNG receptacles without a filter. Operation only by specially trained personnel. Not for self-service operation!

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