User Guide

INSTALLATION

Inspection Inspect the package for damage. If damaged, notify the appropriate carrier immediately.

If undamaged, open the package and inspect the device for obvious damage. Return

damaged products.

Requirements • Tools (not provided): Pipe wrenches

• Training: Installer must be a qualified, experienced technician

• Appropriate accessories

Caution:

• Install the valve with the flow in the direction of the flow arrows (“A” and “B” ports are

inlets and “AB” port is the outlet).

• Do not exceed the ratings of the device.

• Avoid locations where excessive moisture, corrosive fumes, or vibration are present.

Mounting 1. The valve should be mounted in a weather-protected area in a location that is within the

ambient limits of the actuator. When selecting a location, allow sufficient room for valve

linkage, actuator, and other accessories and for service of the product.

2. The preferred mounting position for the valve is with the valve stem vertical above the

valve body. Avoid mounting the valve so that the valve stem is below horizontal.

3. The valves must be piped with two inlets (“A” and “B” ports) and one outlet (“AB” port).

Union Sweat Valve Bodies

1. Remove all three tail pieces and union nuts from the valve body. Apply flux to the tail

pieces and pipe before sweating into place. Make sure the union nuts are mounted on the

tail pieces before sweating.

Caution:

Do not sweat the tail pieces in place while they are mounted to the valve body.

The excess heat will damage the valve body.

2. Re-install the valve body. Start the joint by hand screwing the union nut onto the valve

body. If the thread engagement feels “right,” turn each union nut by hand as far as it

will go.

3. Using a pipe wrench to hold the pipe, fully tighten the union nut to the valve. Do not over

tighten or strip the threads. Take care not to apply torsion across the valve body.

CHECKOUT

1. Make sure the valve stem operates smoothly before installing the valve linkage and the

actuator.

2. If the stem does not operate smoothly, it may indicate that the valve was twisted or

crushed during installation or that the stem was bent by rough handling. These

conditions may require that the valve be replaced.

3. After the piping is under pressure, check the valve body and the connections for leaks.

4. After the valve linkage and the actuator are installed, check their operation.