Johnson Controls V-4000-1 User manual

14- 880- 125, Rev. B

Product Bulletin V-4000

Issue Date April 2016

Part No. 14-880-125 Rev. B

Code No. LIT-977255

The V-4000-1 Small Pneumatic Actuator is

designed to position modulating plugs of chilled or

hot water (up to 200° F) control valves accurately

in response to a pneumatic signal from a

controller. It is tailored for small terminal unit valve

applications, and can be used on Johnson

Controls brass valves as a direct replacement for

oval top actuators (VT Series and oval top series).

Figure 1: V-4000-1

V-4000 Small Pneumatic Actuator for Small Control

Brass Valves

Features and Benefits

Directly replaces field installed

V-3854 and V-3800 models Simple, low-cost upgrade

Glass-reinforced nylon housing Long lasting and corrosion resistant

Compact design Fits in tight mounting spaces

Easy-mount design Requires no tools for mounting, even in "blind"

installations

Low cost Repairs by unit replacement

Snap-on mounting with retaining

nut Assures correct alignment

Pneumatic connection readily

positioned for easy access Simplifies tubing routing

2 V-4000 Small Pneumatic Actuator for Small Control Brass Valves

Application Overview

The V-4000-1 is designed for use with Johnson

Controls small brass valves—normally open,

normally closed, and three-way mixing valve

styles.

The Small Pneumatic Actuator (V-4000-1) is

designed with a snap-on, hand tightened

mounting that uses no set screws and requires

no tools. It is designed to field replace oval-top

and other actuators installed on V-3854, V-3800,

and other valves.

Operating Principles

Air pressure from a pneumatic controller is

applied to the diaphragm of the actuator, which

moves a piston against the valve stem. The

piston will move the valve stem and plug until the

diaphragm pressure balances the valve return

spring force and the fluid forces. These fluid

forces will cause the operating range to shift

from the nominal spring range. Reducing the air

pressure to the diaphragm of the actuator allows

the spring to return the valve plug to its normal

position.

This actuator is based on a rolling diaphragm

design. The rolling diaphragm provides a

constant effective area throughout the valve

stem stroke. The actuator housing is

constructed of sturdy, glass-reinforced nylon.

Due to the simplicity of the design, it is more

economical to replace the actuator than to repair

it. Therefore, no repair parts are needed or

provided.

Installation Instructions

Assembling the actuator. No tools are

required for this operation.

1. Before mounting the actuator to the valve,

locate the retaining nut in the full up position,

completely disengaged from the yoke

threads (Figure 5).

Note: The actuator cannot be mounted or

removed if the retaining nut is located on

the yoke threads.

2. The actuator can be mounted on cage trim

or VT valves:

 If the actuator is to be assembled to a

VT valve, insure that the plastic spring

seat retainer is in place (Figure 5). Use

the retainer furnished with the actuator if

there is no retainer in the valve. Insert

the retainer so that the projection at the

bottom of the retainer snaps into the

keyway at the bottom of the spring seat.

When properly inserted, the top of the

retainer will be below the top of the

spring seat.

If the actuator is being mounted on a

cage trim valve, check the spring gauge

height before mounting the actuator.

This measurement cannot exceed

1-13/16 inches (46 mm) as shown in

Figure 5. If the gauge height is greater

than 1-13/16 inches (46 mm), adjust it to

this value.

3. Tilt the actuator and slide it over the valve

spring as shown in Figure 2.

4. Tilt the actuator slightly, and snap the yoke

over the valve bonnet as shown in Figures 3

and 4.

5. Rotate top of actuator so that the air fitting is

in the desired position.

6. Secure the actuator to the valve by turning

the retaining nut onto the yoke threads.

While holding the actuator in position, turn

down the nut until it no longer turns freely.

Then tighten by hand one additional turn.

CAUTION: Hand tighten nut only —

do not use tools.

V-4000 Small Pneumatic Actuator for Small Control Brass Valves 3

Removing the actuator

1. Remove the polytubing from the barb. The

tube may have to be cut.

2. While holding the actuator, turn the retaining

nut counterclockwise (as seen from above)

until it is in the area above the threads and

below the yoke.

3. Tilt the actuator and snap it off the bonnet.

4. Lift the actuator off the valve. On cage trim

valves, tilt the actuator to clear the valve

upper spring seat.

Figure 2: Tilt the actuator

over the spring and slide into

place.

Figure 3: Tilt the actuator

over the bonnet.

Figure 4: Snap the actuator

into position.

Figure 5: Small Pneumatic Actuator Dimensions

COVER

PISTON

DIAPHRAGM

YOKE

2.84

72.1 1.42

36.07

DIAMETER

3.27

83.06

1.25

31.75

VALVEBONNET

DIAMETER

RETAINING NUT POSITION

BEFORE MOUNTINGOR

REMOVAL

VTVALVE

CAGETRIM

VALVE

1-13/16

(SEE ASSEMBLY

STEP #2)

MAX.

RETAINING NUT

IN LOCKED POSI

SPRING SEAT

RETAINER

DIMENSIONS

in.

4 V-4000 Small Pneumatic Actuator for Small Control Brass Valves

Specifications

Ambient Temperature Limits -20° to 150°F (-29° to 66°C)

Relative Humidity 5 to 90% RH

Fluid Operating Temperature Limits 35 to 200°F (2 to 93°C)

Storage Condition Limits -20 to 150°F (-23 to 66°C)

5 to 95% RH

Dimensions (H x Diameter) 3.27 inch x 2.84 inch diameter (83.1 mm x 72.1 mm diameter)

Weight 3.4 ounces (96 grams)

Maximum Control Pressure 30 PSIG (210 kPa)

Control Signal Air Connection Dual Barbed Fitting for 5/32 or 1/4 inch O.D. Tubing

Effective Diaphragm Area 4 square inches (2581 square mm)

Materials

Yoke and Cover:

Piston:

Diaphragm:

Retaining Nut:

Glass-reinforced nylon

Fabric reinforced synthetic rubber

Chromate-coated Zinc

The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these specifications,

consult the local Johnson Controls office. Johnson Controls, Infc. shall not be liable for damages resulting from misapplication or misuse of its products.

Controls Group FAN 977

507 E. Michigan Street Valve and Actuator Manual

P.O. Box 423 Printed in U.S.A.

Milwaukee, WI 53201

European Single Point of Contact: NA/SA Single Point of Contact: APAC Single Point of Contact:

JOHNSON CONTROLS

WESTENDHOF 3

45143 ESSEN

GERMANY

JOHNSON CONTROLS

507 E MICHIGAN ST

MILWAUKEE WI 53202

USA

JOHNSON CONTROLS

C/O CONTROLS PRODUCT

MANAGEMENT

NO. 22 BLOCK D NEW DISTRICT

WUXI JIANGSU PROVINCE 214142

CHINA

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