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
10 © Copyright 2007 TAC All Rights Reserved. F-26074-1
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
Regular maintenance of the total system is recommended to assure sustained performance.
See Table-7 for maintenance kit part numbers.
Table-7 Maintenance Kits for VB-7313 Valves.
Water System
Maintenance
All heating and cooling systems are susceptible to valve and system problems caused by
improper water treatment and system storage procedures. These guidelines are provided to
help avoid valve and water system problems resulting from improperly treated water or
storage procedures in cooling and hot water systems, and to obtain maximum life from TAC
valves.
Durability of valve stems and packings is dependent on maintaining non-damaging water
conditions. Inadequate water treatment or filtration, not in accordance with chemical
supplier/ASHRAE handbook recommendations, can result in corrosion, scale, and abrasive
particle formation. Scale and particulates can result in stem and packing scratches and can
adversely affect packing life and other parts of the hydronic system.
To maintain non-damaging conditions, follow these guidelines:
• Clean the system prior to start up. Use a nitrite or molybdate-based treatment program.
• Use filtration equipment where needed.
• Properly store off-line systems and monitor water treatment results using corrosion test
coupons.
• Follow the advice of a water treatment professional.
• Consult EN-205, Water System Guidelines Engineering Information, F-26080, for
further details.
Valve Body
Part Number
Replacement
Packing Assembly
Packing Wrench Valve Repair Kit
a
VB-7313-0-4-2
YBA-622-2 TOOL-20-1
RYB-731-2
VB-7313-0-4-4 RYB-731-4
VB-7313-0-4-6 RYB-731-6
VB-7313-0-4-8 RYB-731-8
VB-7313-0-4-9 RYB-731-9
VB-7313-0-4-10 RYB-731-10
VB-7313-0-4-11 RYB-731-11
a
Kit includes replacement packing and stem & plug assembly.