User Guide

F-24396-1 © Copyright 2006 TAC All Rights Reserved. 7
Figure-5 Sequencing Valve Operation with Pneumatic Actuator.
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.
MAINTENANCE & FIELD REPAIR
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-7332 Valves.
100
80
60
40
20
0
204681210 14 16 18 20
Hot Water Return %
100
80
60
40
20
0
Hot Water Flow %
100
80
60
40
20
0
Chilled Water Return %
100
80
60
40
20
0
Chilled Water Flow %
Chilled Water Flow
(Supply Valve Flow A to AB)
Hot Water Flow
(Supply Valve Flow B to AB)
Chilled Water Return
(Return Valve Flow AB to A)
Hot Water Return
(Return Valve Flow AB to B)
Room Thermostat Branch Pressure
Valve Body
Part Number
Replacement
Packing Assembly
Packing Wrench Valve Repair Kit
a
VB-7332-0-4-3
YBA-622-1 TOOL-20-1
RYB-733-3
VB-7332-0-4-4 RYB-733-4
a
Kit includes replacement packing and stem & plug assembly.