In this video, we will be looking at the Waterworks valve gearbox. They are a heavy-duty, high-quality, European designed and manufactured gearbox.
These gearboxes mount on top of a 90-degree rotary valve, for example a butterfly valve, and provide a gear driven operation in comparison to the commonly used lever handle operation. One benefit of a gearbox operation is it gives a more controlled opening speed which has system design benefits such as reducing water hammer. It also allows for more incremental and accurate flow control.
Let’s look at some of the key specifications of the gearboxes:
1. The gearbox body is made from ductile cast iron giving the gearbox greater strength, durability, and corrosion resistance compared to standard grey cast iron alternatives.
2. The gearboxes have a working temperature rating of -50-150°C and an IP68 dust and water protection rating.
3. The shaft and fasteners are made from 316 stainless steel, the worm is heat-treated carbon steel, and the quadrant is ductile cast iron.
4. They are lithium grease filled giving excellent durability to the gearboxes.
5. The bushings are oil-impregnated copper nickel alloy and Buna-N rubber seals.
6. They have an AF 120 nitrile gasket and nitrile O-Rings.
7. The S25, our product code GBBFV200, has an output torque of 250Nm. The S55, our product code GBBFV300, has an output torque of 550Nm. The S100, our product code GBBFV400, has an output torque of 1000Nm.
8. They have a position indicator located on top of the valve for easy control and operation.
9. The mounting flange is to the EN ISO5211 standard.
10. The gearboxes have an adjustable stopper for more accurate flow control.
Waterworks stocks gearboxes S25 (GBBFV200) which is suitable for Butterfly valve DN40-DN200, gearbox S55 (GBBFV300) which is suitable for butterfly valve DN250-DN300 and gearbox S100 (GBBFV400) which is suitable for butterfly valve DN400.
Thanks for watching, for more information please visit www.waterworksnz.co.nz .
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