611320 Genuine Non-Return Valve for Bosch, Siemens, Neff Dishwashers, BSH 00611320 One Way Check Valve Replacement

Genuine BSH non-return valve 611320, also listed as 00611320, lets water flow one way only. We've filed it under Bosch, Siemens and Neff dishwashers, where non-return valves usually sit in the drain path to stop pumped-out water running back into the tub. The record doesn't confirm the exact position or appliance, so check your parts list for 611320 before ordering.

Dirty water flowing back into the dishwasher?

A non-return valve is a small flap or ball valve that opens when water is pushed through it and closes when the flow stops. In a dishwasher drain, it stops waste water that has already been pumped out from siphoning or draining back into the tub. When the flap sticks, splits or loses its seal, you may find murky water sitting in the base after a cycle, a sour smell, poor wash results or a drain error. A valve jammed shut by debris can stop the dishwasher draining altogether.

Part details

• Genuine BSH part 611320
• Also written 00611320
• One way non-return valve
• Position not recorded, check your parts list

Fitting the non-return valve

Switch off at the wall, turn off the water tap and lay a towel down, as there may be water in the drain system. Locate the valve by following the drain path on your model's parts diagram. Note which way the flow arrow or flap faces before removing the old valve. Fit the new one facing the same direction, reconnect hoses securely and run a drain cycle to check for leaks.

Questions about this part

Does it matter which way round the valve goes?

Yes. A non-return valve only lets water through in one direction. Fitted backwards, it will block the flow entirely. Match the direction of the old valve, or look for an arrow or flap marking on the body.