It is generally not recommended to have two kitchen appliances, such as a washing machine and a dishwasher, share one drainage pipe if they are in different places at opposite ends of the unit. Each appliance should have its own dedicated drainage connection to avoid potential issues and ensure proper functioning.
Here are a few reasons why it's not advisable to share a drainage pipe for these appliances:
Water volume and pressure: Washing machines and dishwashers can discharge a significant amount of water during their cycles. If both appliances share the same drainage pipe, the combined water volume and pressure may exceed the capacity of the pipe, leading to blockages and backups.
Different detergents and chemicals: Washing machines and dishwashers use different detergents and chemicals. Combining these substances in the same drainage pipe may result in unwanted chemical reactions, potentially damaging the pipes or causing foul odors.
Risk of clogs: The lint, debris, and food particles from the dishwasher and washing machine can accumulate in the shared drainage pipe, increasing the risk of clogs and reducing the efficiency of both appliances.
Maintenance and repairs: If there is a problem with the shared drainage pipe, it could affect both appliances, making it more challenging to diagnose and fix issues.
To ensure both appliances work properly and to prevent any potential problems, it is best to have separate drainage connections for each one. If you need to install a new drainage pipe for either appliance, it's essential to follow local building codes and regulations and, if necessary, consult a professional plumber to ensure the installation is done correctly and safely.