Install Instructions

VB6 SERIES 6-WAY CONTROL BALL
VALVES AND ACTUATORS
INSTALLATION INSTRUCTIONS
® U.S. Registered Trademark. All Rights Reserved
Copyright © 2020 Honeywell Inc. Printed in USA
APPLICATION
The VB6 6-Way Control Ball Valves regulates hot and
chilled water with glycol solutions up to 60% in heating,
ventilating, and air conditioning (HVAC) systems.
These valves ship with a direct coupled actuator factory
installed for modulating control. The valve is designed to
be used exclusively with MN7510A2001 actuator.
Application Notes
IMPORTANT: Valve sizing is important for correct
system operation. Undersized valves do not have
sufficient capacity at maximum load. Oversized
valves do not have sufficient authority over the load
in modulating applications.
Oversized valves can cause excessive cycling and
the seat and ball can be damaged because of the
restricted opening.
Proper Use
These valves are intended for use in chilled water and hot
water closed loop applications only, with a media
temperature range of 0 ºF to +212 ºF (-18 ºC to 100 ºC),
and static pressures up to 600psi. These valves are NOT
suitable for oil, combustible gases, or steam.
These valves are to be operated with the Honeywell
MN7510A2001 actuator only.
Water should be properly filtered, treated and conditioned
for good operating performance, according to local
conditions, and recommendations of the boiler or chiller
manufacturers. The installation of strainers and filters is
recommended.
IMPORTANT: The presence of excessive iron oxide
(red rust) in the system voids the valve warranty.
Required Operating Torque
The VB6 series 6-way control ball valves are to be operated
with the Honeywell MN7510A2001 actuator only
These valves use a patented seat design that reduces the
torque needed. The nominal required operating torque is
88 lb-in.
Table 1: Close off Pressure
Valve Size
Close-off Pressure Rating
1/2 inch
200 psi (1380 kPa)
Flow Characteristic
The VB6 series 6-way Ball Valves have true equal
percentage flow characteristic, thanks to precision
machined metal discs in front of the ball.
Valve Sizing
Typical pressure drop across a control valve is in the range
of 3 to 5 psid, however the best control is achieved when
the valve pressure drop is as close to the coil pressure
drop as possible. A 6-Way valve will have two C
V
calculations, one each for Sequence 1 and Sequence 2,
which will feature different flow rates most of the time.

Summary of content (12 pages)