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 screwed end valves with the “B” port as the inlet and ports “A” and “AB” as

the outlets.

• 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.

Screwed Valve Bodies

The VB-7323-0-4-P series screwed valve bodies conform to American Standard Taper Pipe

Threads (NPT). The valves must be piped with one inlet (“B” port) and two outlets (“A” and

“AB” ports).

1. Apply pipe dope sparingly to all but the last two threads of a properly threaded, reamed,

and cleaned pipe. Make sure that pipe chips, scale, etc. do not get into the pipe since this

material may lodge in the valve seat and prevent proper closing and opening of the valve.

2. Start the joint by hand screwing the pipe into the valve. If the thread engagement feels

“right,” turn the pipe by hand as far as it will go.

3. Use a pipe wrench to fully tighten the valve to the pipe. Do not over tighten or strip

threads. See Table-6 and Figure-2 for the normal engagement length of the threads.

Figure-3 shows a means of tightening the pipe so that the valve is not twisted or

crushed.

Table-6 Normal Thread Engagement Between Male Pipe Thread and Valve Body.

Valve Size Inches

(NPT)

Normal Engagement

Valve Size Inches

(NPT)

Normal Engagement

1/2" 1/2" 1-1/4" 11/16"

3/4" 9/16" 1-1/2" 11/16"

1" 11/16" 2" 3/4"