Valve Install Instructions

VG7000 Series Bronze Control Valves Product Bulletin 5
Application Overview
VG7000 Series Bronze Control Valves feature brass
and stainless steel trim, and are available in two-way
configurations with Push-Down-to-Close (PDTC)
(normally open if pneumatic or spring return) or
Push-Down-to-Open (PDTO) (normally closed if
pneumatic or spring return) with threaded (NPT), union
sweat, union globe, and union angle end connections.
The valve can be ordered with a variety of pneumatic
actuators: V-3000-8012 (exposed, with or without a
factory-mounted positioner), V-3000-8003 (enclosed),
V-3801-8001 (oval top), and higher force MP8000
Series Actuators (with or without a factory-mounted
pneumatic positioner).
VG7000 Series Valves can also be ordered with any of
the following series electric actuators: VA-4233,
VA-7150, VA-7200, VA-8x2x, VA7810, VA7820, or
VA7830. All electric actuators are fully compatible with
Johnson Controls® controllers, reducing installation
costs. Valves without actuators can be ordered with the
standard bonnet and threaded stem design, allowing
easy interchangeability of actuators with the use of
standardized mounting kits. See Table 2 through
Table 4 for ordering data and additional details. For
valid valve and actuator combinations, see Table 16
and Table 17.
The modulating valve plug of VG7000 Series Valves
provides an equal percentage flow characteristic for
two-way valves, and equal percentage or linear for
three-way valves. Tight shutoff is ensured using a
molded elastomeric disk in valves with brass trim, and
a precisely machined metal-to-metal seat for valves
with stainless steel trim. An arrow is cast on one side of
the valve body indicating the direction of flow for proper
piping.
Pneumatic Actuator Selection
See Table 7, Table 9, Table 11, and Table 16.
Do not confuse the V-3000-8012, V-3000-8003, and
V-3801-8001 Pneumatic Actuators with the V-3000-1,
V-3000-2, and V-3802-1 Pneumatic Actuators. Refer to
the V-3000-8011 (Exposed) and V-3000-8003
(Enclosed) Pneumatic Valve Actuators Product/
Technical Bulletin (LIT-977252) for specifics regarding
interchangeability. The V-3801-8001 is not a direct
replacement for the V-3802-1 because V-3802-1 is not
compatible with VG7000 Series Valves.
V-3801-8001 Pneumatic Actuator
The V-3801-8001 is a low force, oval top actuator
designed specifically for 1/2 and 3/4 in. valves where
mounting space is restricted. The V-3801-8001 has
sufficient force to handle most seating pressures, and
the molded diaphragm design provides a constant
effective area (4 sq in.) throughout the valve stem
stroke. Due to the simplicity of the design, it is more
economical to replace the actuator than repair it. The
actuator assembly can be removed or repositioned by
loosening a single set screw without disturbing the rest
of the valve assembly.
Because the V-3801-8001 uses a unique slotted valve
stem for factory assembly (see the Stem Type section
in Table 2), the spring kits available are for field
mounting to standard threaded stem valves. See
Table 7 for mounting kit code numbers.
V-3000-8012 Pneumatic Actuator
The V-3000-8012 is a versatile, medium-force
pneumatic actuator that can be used in most HVAC
applications, including sequential control of valves. See
Table 9 and Table 11 for actuator sizing and selection.
The permanently captured, molded rolling diaphragm
of the V-3000-8012 provides a constant effective area
(8 sq in.) throughout the valve stem stroke. The
actuator assembly can be removed or repositioned by
loosening a single set screw without disturbing the rest
of the valve assembly.
The V-9502 Pneumatic Positioner is also available for
factory or field mounting to the V-3000-8012.
V-3000-8003 Pneumatic Actuator
The V-3000-8003, operationally similar to the
V-3000-8012, is designed for enclosed installation in a
location where the actuator might be subjected to
tampering. The V-3000-8003 has a replaceable molded
diaphragm design.
IMPORTANT: The VG7000 Series Bronze Control
Valves are intended to control saturated steam, hot
water, and chilled water flow under normal
equipment operating conditions. Where failure or
malfunction of the VG7000 Series Valve could lead
to personal injury or property damage to the
controlled equipment or other property, additional
precautions must be designed into the control
system. Incorporate and maintain other devices,
such as supervisory or alarm systems or safety or
limit controls, intended to warn of or protect against
failure or malfunction of the VG7000 Series Valve.