Quick Answer
A recommended pump for greywater systems is often a submersible or jet pump with a flow rate of 1-5 GPM, specifically designed for low-pressure applications and capable of handling the high solids content of greywater.
Selecting the Right Pump for Greywater Systems
When choosing a pump for a greywater system, particularly for a branched drain configuration, it’s essential to consider the flow rate, pressure requirements, and solids handling capacity. A submersible pump is an excellent choice, as it can be submerged in the greywater tank and can handle high solids content without clogging. Look for pumps with a flow rate of 1-5 GPM, as this range is suitable for most greywater applications.
Pump Sizing Considerations for Greywater Systems
To determine the right pump size, calculate the total flow rate required for the branched drain configuration. For example, if you have three branches with a flow rate of 1 GPM each, the total flow rate required would be 3 GPM. Add 10-20% to the total flow rate to account for system losses and pressure drop. This will ensure that the pump can provide sufficient flow to meet the demands of the system.
Recommended Pump Features for Greywater Systems
When selecting a pump for a greywater system, look for the following features: a high-torque motor for handling high-density greywater, a stainless steel or PVC impeller for durability and corrosion resistance, and a rugged design for withstanding the harsh conditions of a greywater environment. A built-in check valve is also essential to prevent backflow and ensure system integrity. Be sure to choose a pump that meets or exceeds the requirements of your local plumbing codes and regulations.
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