User Guide

ManualsBrandsBarber Colman ManualsHVAC Replacement Parts1-1/4" NPT Two-Way Valve (20 cv)

Figure-4 Installation of Screwed End Valves.

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-9 for maintenance kit part numbers.

Table-9 Maintenance Kits for VB-7253 Valves.

Use pipe wrench to

prevent valve from turning.

Tighten pipe using

this pipe wrench.

Valve

Assembly

Valve Body

Part Number

Replacement

Packing

Assembly

Packing

Wrench

Seat Replacement Tool

All six tool sizes are included in package. Refer to TOOL-7253 Series Stainless Steel Trim Valve Seat Replacement Tool General Instructions, F-26387,

for details. Stainless steel valve replacement seats are sold separately.

Stainless Steel Seat

Part Number

Valve Repair

Kit

Kit includes replacement packing and stem & plug assembly.

Part Number

Size in

inches (mm)

VB-7253-0-4-1

YBA-622-1 TOOL-20-1

TOOL-7253-101-0-04 1/2 (15) NYBA-7253-101-0-4

RYB-725-1

VB-7253-0-4-2 RYB-725-2

VB-7253-0-4-3 RYB-725-3

VB-7253-0-4-4 RYB-725-4

VB-7253-0-4-5

TOOL-7253-101-0-06 3/4 (20) NYBA-7253-101-0-6

RYB-725-5

VB-7253-0-4-6 RYB-725-6

VB-7253-0-4-7

TOOL-7253-101-0-08 1 (25) NYBA-7253-101-0-8

RYB-725-7

VB-7253-0-4-8 RYB-725-8

VB-7253-0-4-9 TOOL-7253-101-0-09 1-1/4 (32) NYBA-7253-101-0-9 RYB-725-9

VB-7253-0-4-10 TOOL-7253-101-0-10 1-1/2 (38) NYBA-7253-101-0-10 RYB-725-10

VB-7253-0-4-11 TOOL-7253-101-0-11 2 (50) NYBA-7253-101-0-11 RYB-725-11