Johnson Controls VF Series Manual de usuario

Valve and Actuator Manual 977

Valve Product Information Section

Technical Bulletin VF

Issue Date 0190

Code No. LIT-977205X

VF Series Butterfly Valves 2 Through 20 in.,

Two-Way and Three-Way Installation Instructions

General Instructions

Note: Please be sure to read

the following preliminary

instructions carefully before

proceeding to the installation

steps pertaining to a particular

valve configuration.

•Make sure that the pipeline

and flange faces are clean.

Pipe scale, metal chips,

welding slag, and welding

rods can obstruct disc

movement and damage the

disc and seat.

•The resilient seat of the

valve is equipped with

molded-in O-rings on the

face of the seat; therefore,

no gaskets are required.

•The valves should be

handled by the extended

valve neck only. Heavier

valves may require a nylon

sling to be used as a hoist

around the valve neck

and/or cast iron tee (on

three-way assemblies).

Never pick up a valve by

the actuator, mounting

bracket, or interconnecting

linkage.

•Most VF Series Valve

Assemblies are shipped

with the disc in the near

closed position

(approximately 10°open).

Valves equipped with

pneumatic piston type

actuators are shipped with

the actuator de-coupled

from the crankarm, with the

actuator and any

interconnecting linkage

strapped to the bracket. Do

not remove the strapping

until the valve is completely

installed between the pipe

flanges.

•Valves equipped with a

V-919X Series Rack and

Pinion Spring Return

Actuator require a regulated

pneumatic air supply to

position the disc to 10°

open prior to and during

installation. If no air supply

is available during

installation, the V-919X

Series Actuator must be

removed to allow for

manual positioning of the

disc to the proper position.

Two-Way Butterfly Valve

Installation

1. Align the piping and spread

the flanges apart enough to

allow the valve body to be

located between the flanges

without actually contacting

the flange surfaces (see

Fig. 1).

2. Remove the protective

cardboard shields from the

valve faces.

3. Refer to Figs. 6 through 13

for proper valve stem/disc

orientation.

4. Place the valve between the

flanges and center the

valve.

5. Install all of the flange bolts

or cap screws and hand

tighten them.

6. Slowly open the disc to the

fully open position, making

sure that the disc does not

contact the adjacent pipe

I.D.

7. Remove the flange spreaders

and tighten the flange bolts or

cap screws according to the

sequence in Fig. 2.

8. Stroke the valve fully closed and

fully open while checking for

proper disc clearance and

2VF Technical Bulletin

proper pipe alignment (see

Fig. 3).

9. If the valve is equipped with

a pneumatic piston type

actuator, remove the

strapping from the actuator.

Move the disc to its normal

position and connect the

actuator clevis to the

appropriate hole in the

crankarm using the clevis

pin provided (see Fig. 4). If

two actuators are provided,

perform the above

procedure on each actuator.

Three-way Butterfly Valve

Installation

1. Align the piping and spread

the flanges apart enough to

allow the valve bodies and

tee to be located between

the flanges without actually

contacting the flange

surfaces (see Fig. 1).

2. Remove the protective

cardboard shields from the

valve faces.

3. Place the valve and tee

between the flanges and

center the assembly.

4. Place the appropriate

gasket between the bare

end of the tee and the

adjacent flange. Install the

flange bolts to the bare end

of the tee and hand tighten

them. Check the alignment

again to insure proper

centering of the assembly

between the adjacent pipe

flanges.

5. Slowly open the disc of the

valve on the “run” side of

the tee (see Fig. 5), making

sure that the disc does not

contact the adjacent pipe

I.D.

6. Remove the flange

spreaders on the “run” side

of the tee and hand tighten

the flange bolts or cap

screws.

7. Repeat Steps 5 and 6 on

the “branch” side of the tee.

8. If the valve is equipped with

a pneumatic piston type

actuator, remove the

strapping from the actuator.

Position the disc of the

“run” valve to its normal

position and connect the

actuator clevis to the

appropriate hole in the

crankarm using the clevis

pin provided (see Fig. 4). If

two actuators are provided,

perform the above

procedure on each actuator.

9. Position the disc of the

“branch” valve to its normal

position. Refer to Fig. 5 for

the proper orientation of the

crankarm for the “branch”

valve.

10. Unstrap the interconnecting

linkage rod and secure the

loose end of the rod to the

appropriate crankarm.

11. Slowly stroke the fully

linked three-way assembly

two complete cycles while

checking for proper disc

clearance and pipe

alignment (see Fig. 3).

Tighten all flange bolts and

cap screws securely

according to the sequence

in Fig. 2.

VF Technical Bulletin 3

4VF Technical Bulletin

VF Technical Bulletin 5

6VF Technical Bulletin

VF Technical Bulletin 7

Notes

8VF Technical Bulletin

Notes

Controls Group

507 E. Michigan Street

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

Milwaukee, WI 53202

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