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The performance specifications are nominal and conform to acceptable industry standards. For applications at conditions beyond these specifications, consult the local Johnson Controls office.
Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2014 Johnson Controls, Inc.
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V–329
Code No. LIT-1924320
Repair Parts for Use with V-3974 with Actuator and VB-3974 without Actuator
(Including 1/2 in.)
B
A
D
C
Repair Parts, V-3974 and VB-3974
Description
The available service parts listed in the Selection Charts can extend the service life of the
V-3974 and VB-3974 Cage Trim Valve Assemblies and in many cases return the valve to near
original operating performance.
Note: 1/2 in. valve assemblies discontinued in 1991.
VB valves are used with AV-8050, AV-8051, AV-8052, AV-8090, AV-8091, and AV-8092
assemblies.
Springs are under compression.
Removal of springs requires use of spring compression tool JC 5389.
Selection Charts
Repair Parts for Use with V-3974 with Actuator and VB-3974 without Actuator
(Including 1/2 in.)
Code Number Callout Description V-3974 VB-3974
V-3752-646 A Gland Nut (Packing Nut) ■■
V-9999-608 B Ring Pack
Packing
Kits
Single pack ■■
V-9999-610 10 pack (contains enough material to
repack 10 valves)
■■
V-9999-630 50 pack (contains U-cups and O-rings
only to repack 50 valves)
■■
Spring Kits and Reconditioning Kits for V-3974 and VB-3974
Valve Valve
Size, in.
Actuator Spring Range,
psig
Spring Kits
1
(Callout C)
1. Spring kit includes spring, upper and lower spring seat, stem extension, stem lock screw, and instructions.
Reconditioning Kits
2
(Callout D)
2. Reconditioning kit includes cage, O-ring, plug, stem, bonnet, packing, packing nut, and instructions.
V-3974 1/2 and 3/4 V-3000 4 to 8 V-3974-6008 1/2 in.: V-3974-6003 (Cv = 0.2) or -6004 (Cv = 0.4) or -6005 (Cv = 1.2)
or -6006 (Cv = 2.2) or -6007 (Cv = 4.4)
3/4 in.: V-3974-6001 (Cv = 8.6)
9 to 13 V-3754-6009
1 and 1-1/2 V-3000 4 to 8 V-3974-6009 1 in.: V-3974-6002 (Cv = 13.9)
1-1/2 in.: V-5464-6001 (Cv = 27.5)
9 to 13 V-3754-6008
Other Valves and Actuators
Threaded Globe Valves and
Actuators
Other Valves and Actuators
Threaded Globe Valves and
Actuators
Other Valves and Actuators