User Guide
Table Of Contents
- Application
- VB-7313 series three-way mixing valves control hot or chilled water in heating or air conditioning systems. These valves must be...
- Danger: Do not use for combustible gas applications. The VB-7313 series valve packings are not rated for combustible gas applications, and if used in these applications, gas leaks and explosions could result.
- Features
- Applicable Literature
- . TAC Valve Products Catalog, F-27414
- . TAC Electric-Electronic Products Catalog, F-27382
- . TAC Pneumatic Products Catalog, F-27383
- . CA-28 Control Valve Sizing, F-13755
- . Valve Selection Chart for Water, F-11080
- . EN-205 Water System Guidelines, F-26080
- . Vx-7xxx-8xx, Vx-7xxx-59x, Vx-9xxx-8xx, Vx-9xxx-59x Globe Valve Assemblies with TAC DuraDrive Linear Series Actuators, F-26752
- SPECIFICATIONS
- VALVE SIZING AND SELECTION
- INSTALLATION
- Inspection
- Requirements
- 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...
- 1. Apply pipe dope sparingly to all but the last two threads of a properly threaded, reamed, and cleaned pipe. Make sure that pi...
- 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. SeeTable-6 and Figure-3 for t...
- Table-6 Normal Thread Engagement Between Male Pipe Thread and Valve Body.
- Figure-3 Normal Thread Engagement.
- Figure-4 Installation of Screwed End Valves.
- TYPICAL PIPING
- 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.
- a. Drive the actuator and run the valve to the stem down position. Make sure the linkage and valve stem move freely. At the stem down position, the valve should shut off the “B” port.
- b. Drive the actuator and valve to the stem up position. Again, the valve stem and linkage should operate smoothly. At the stem up position, the valve should shut off the “A” port.
- MAINTENANCE
- 1. Make sure the valve stem operates smoothly before installing the valve linkage and the actuator.
- DIMENSIONAL DATA
F-26074-1 © Copyright 2007 TAC All Rights Reserved. 9
TYPICAL PIPING
All piping must comply with local codes and ordinances. Refer to Figure-5 through
Figure-7 for typical piping.
Figure-5 Typical Piping for Control of Heating or Cooling Coil.
Figure-6 Typical Boiler Hot Water Reset.
Figure-7 Typical Primary-Secondary Piping.
Coil
Valve
Return
Bypass
Supply Supply
Coil
Bypass
Valve
Return
Stem down flow through coil.
Stem up flow through coil bypass.
Stem up flow through coil.
Stem down flow through coil bypass.
A
B
A
B
A
B
A
B
Supply
Boiler
Return
Bypass
A
B
A
B
Typical Boiler Hot Water Reset
System
Pump
Valve
Assembly
A
B
A
B
Coil
Return
Supply
A
B
A
B
Typical Primary-Secondary Piping
From
Other
Zones
Balancing
Cock
Balancing
Cock
To Other
Zones
Valve
Assembly
A
B
A
B