Asked by: Albarina Estereiro
asked in category: General Last Updated: 27th May, 2020

Can you install a ball valve upside down?

The valve may be installed in other orientations, but any deviation from vertical is a compromise. Installation upside down is not recommended because it can cause dirt to accumulate in the bonnet.

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Consequently, does it matter which way a ball valve is installed?

In short: a ball is round so direction does no matter. If a valve must be installed in a certain direction is should have an arrow cast into the body showing the direction of flow.

Secondly, can a gas valve be installed upside down? It has always been my understanding that a combination gas valve can be installed in any orientation (0-90 degrees) other than upside down.

Consequently, can a pressure relief valve be installed upside down?

We advise no; keep the body above the horizon when mounted in a horizontal pipe, or mount it in a vertical pipe.

Which direction is open on a ball valve?

When the handle of a ball valve is parallel to the valve or pipe, it's open. When it's perpendicular, it's closed.

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