Need help on solenoid valve

[yvoneysl]

Planning to have a freshwater reservoir tank above the sump by gravity feed. Where can I buy good quality solenoid valve that can control by Automatic top up system?

[yvoneysl]

something like this, who's selling....

[madmac]

Interesting. Can elaborate more.

Most wud use a dosing pump, activated by either a timer or float switch.

[ervine]

Planning to have a freshwater reservoir tank above the sump by gravity feed. Where can I buy good quality solenoid valve that can control by Automatic top up system?

hm... by gravity thru a solenoid? why not just get a dosing pump or any cheap pump will do?

You intend to tap the water straight from the mains?