KMC Controls VEF-56 Series User Manual
Installation guide, Vef-56 3-way details maintenance, Way and 3-way rubber-lined butterfly valves
VEF-53/56 Series Valves
1
Installation Guide
Installation Guide
Mounting 1
VEF-56 3-Way Details
Maintenance 1
Actuator Wiring 2
More Information 2
Operation 2
Mounting
1. Clean the lines upstream from the valve. Remove
any debris (welding slag, pipe scale, or other
contaminants) larger than 1/16 inch (1.6 mm).
NOTE: If the system experiences large amounts
of debris, steps should be taken to keep
the system clean, such as 20 mesh strainer
installed upstream of the valve.
2. Align the valve assembly according to the system
flow requirements. VEF-56 three-way valves can
be used in either mixing or diverting applications
(see the VEF-56 3-Way Details section).
NOTE: No flange gaskets are needed because of the
design of the seat face.
3. The valve may be mounted on either vertical or
horizontal pipe lines. On horizontal lines, mount
the valve so the actuator is positioned upright and
over the valve. (Leave sufficient room on all sides
to service the actuator and valve.)
CAUTION
To prevent condensation from dripping onto the
actuator housing on horizontal lines, mount the
valve with the actuator in the upright position or, at
most, at a 90° angle. See the Mounting (2-Way and
3-Way) illustration below.
4. Bolt the valve to the pipes.
5. Eliminate air from the system to keep the valves
full of fluid during operation.
2-Way and 3-Way Rubber-Lined Butterfly Valves
VEF-53/56 Series
2-Way Action:
CCW to Close
Up
(for horizontal
lines) or up
to 90° angle
3-Way Action:
With Actuator Full
CCW, Master
Valve is Closed
and Slave Valve
is Open
VEF-56
Arrangement
Master
Valve
(Actuator)
Slave
Valve
Common
Port
1
A
B
C
2
A
C
B
3
B
C
A
4
B
A
C
5
C
B
A
6
C
A
B
Top View
B
C
A
FLOW
MASTER
SLAVE
COMMON
COMMON
MASTER
SLAVE
MASTER
SLAVE
COMMON
MIXING
FLOW
FLOW
COMMON
SLAVE
MASTER
MASTER
SLAVE
COMMON
MASTER
COMMON
SLAVE
DIVERTING
FLOW
FLOW
FLOW
B
C
A
B
C
A
Arrangement 5
DIVERTING Flow Example
Arrangement 5
MIXING Flow Example
Master
Slave
Common
Master
Slave
Common
1
1
5
5
6
6
(Arrangements 2 and 4 not illustrated—
see actuator illustration below for Arrangement 3)
B
C
A
Actuator full CCW:
• Master valve closed
• Slave valve open
Actuator full CW:
• Master valve open
• Slave valve closed
Arrangement 3
Actuator
Mounting (2-Way and 3-Way)
VEF-56 3-Way Details
Maintenance
No routine maintenance is required. Careful installa-
tion ensures long-term reliability and performance.