How do I properly install a Threaded Ball Valve?

How to Install a Threaded Ball Valve

Threaded Ball valves can be installed correctly in just 7 Steps. Follow these considerations and steps for an easy and hassle free installation.  


Ball valves may be installed in vertical or horizontal pipe runs, they are bi-directional therefore flow direction is not critical, however the best practice is to set up the valve handle to point in the direction of flow whenever possible. The valve stem orientation is not critical, however any deviation from vertical is a compromise. Installation upside down is not recommended because it can cause dirt to accumulate by the stem packing. The best practice is to install with the valve stem facing upwards whenever possible.    


#1 – Inspect the ball valve ports, seating surfaces and threads to ensure they are clean and free of foreign debris. 

#2 – Operate the valve from fully open to fully closed position.  

                 #3 – Ensure the threaded pipe connections to be threaded into the valve are accurately threaded, clean and free of foreign material or metal shavings.  

#4 - Apply a high-quality pipe thread sealing compound or PTFE thread sealing tape following the manufactures application instructions to ensure a leak free pipe joint seal.  

#5 –  Valve and piping must be in alignment to prevent cross-threading, the male threaded fitting needs to be aligned with the axis of the tapped hole. Maintaining proper pipe alignment during assembly eliminates unnecessary stress on the valve body. Support the valve and piping in alignment to prevent any unnecessary stresses on the valve body by connecting the pipe. Pipe supports must be capable of keeping the pipe in alignment and bearing the weight of the fittings, valves, pipe and its contents.

WARNING: Failure to properly support piping will void warranty and could result in structural failure and property damage

#6 – When installing two-piece body ball valves always use two wrenches when making up pipe joints to these valves. Position one wrench on the valve end closest to the pipe joint being tightened and the other wrench onto the pipe to prevent transmitting torque through the valve body joint, between the valve body and tailpiece. This also prevents distortion of the internal parts of the valve. WARNING: Failure to follow this instruction will stress the body joint and may result in the leaking at the body joint.