When a windmill delivers stock water from a bore, there is a risk of water shortage during low wind conditions or when there is a short-term increase in water demand. In remote regions, a submersible pump is necessary to supplement the windmill pump during calm weather.
A Belvedere Bypass valve is a valve connected between the submersible pump and the Windmill pump. It allows the Windmill pump to operate without drawing its water through the impellers of the submersible pump. The performance of the Windmill will be greatly reduced if the flow into the windmill pump is restricted in any way.
Adelaide based Butlers Pumps & Irrigation fitted a 32 mm brass Maric Flow Control valve directly above a submersible bore pump supplying stock water on large remote sheep station. This bore pump was fitted below a windmill via a Belvedere Bypass valve to supply stock water.
The Submersible pump was oversized and consequently the flow rate was exceeding the capacity of the bore, potentially causing damage should the pump operate dry. The Maric valve guaranteed that the flow rate would not exceed the capacity of the bore.
The Maric valve was chosen because it is simple to install, inexpensive and reliable in the remote location. It was the solution of choice for this situation.