User Guide

TYPICAL PIPING

All piping must comply with local codes and ordinances. Refer to Figure-4 for typical piping.

Figure-4 Typical Primary-Secondary 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

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-7323 Valves.

Valve

Heat Exchanger

Return Supply

Valve Body

Part Number

Replacement

Packing Assembly

Packing Wrench Valve Repair Kit

VB-7323-0-4-4

YBA-622-1 TOOL-20-1

RYB-732-4

VB-7323-0-4-6 RYB-732-6

VB-7323-0-4-8 RYB-732-8

VB-7323-0-4-9 RYB-732-9

VB-7323-0-4-10 RYB-732-10

VB-7323-0-4-11 RYB-732-11

Kit includes replacement packing and stem & plug assembly.