MEASUREMAN MD061 1" Pressure Vacuum Breaker, Brass Body, NPT Connections

Some irrigation installations need a dedicated way to help protect the potable water supply from backsiphonage. The MEASUREMAN MD061 is a 1-inch pressure vacuum breaker assembly for sprinkler and irrigation systems. Its brass body is designed for outdoor use, while threaded connections support integration into a compatible setup. Centreline-mounted test cocks also make routine testing and system draining more straightforward.

What to know

This assembly is designed to help prevent contaminated water from flowing back into the potable water supply. That protection is particularly relevant in sprinkler and irrigation systems, where backflow prevention helps keep the water supply separate from water that may have contacted the system. Choose the MD061 when a pressure vacuum breaker is the type of protection your installation calls for.

The unit has 1-inch female NPT threads and threaded inlet and outlet connections. These standard threaded connections are intended to fit most irrigation and sprinkler systems using the corresponding connection size and type. The centreline-mounted test cocks provide access for testing and can simplify installation work, helping make the assembly easier to manage as part of the system. Its listed dimensions are 20.3 x 12.7 x 22.9 centimetres, useful when planning how it will fit into the installation.

The product specifications identify a brass body and list ASME B16.34 and ASSE 1013. Together, the stated connection details and backflow-prevention purpose make this a practical choice for a system that needs a dedicated pressure vacuum breaker rather than a general irrigation fitting.

Care & maintenance

The integrated test cocks support routine testing and provide a way to drain the system. Before cold winter conditions, use them to help drain the valve and protect it from freeze damage. This gives the assembly a useful role beyond installation: the same access points can support ongoing checks and seasonal preparation. Follow the applicable testing and winterization practices for your irrigation system to keep the valve ready for its intended use.

Who it’s for

The MEASUREMAN MD061 is suited to homeowners, irrigation installers and property managers setting up or maintaining sprinkler systems that call for a 1-inch pressure vacuum breaker. It makes sense if protecting the potable water supply from backsiphonage is a priority and the system uses compatible 1-inch NPT connections. For a straightforward irrigation connection where you do not need a backflow-prevention assembly, a standard fitting may better match the job, this model is specifically intended to provide that protective function.

Final verdict

For irrigation systems that require pressure vacuum protection, the MD061 brings together a brass construction, 1-inch threaded NPT connections and built-in test cocks for testing and draining. Those features support practical installation, ongoing maintenance and seasonal winterization in one assembly. It’s a considered fit for sprinkler and irrigation setups where backsiphonage protection is an essential part of the system.