Spears BUTTERFLY Instrucciones De Instalación

BUTTERFLY VALVE
Installation Instructions
Attention to direction of fl ow is required when installed with single-side fl ange
connection. Spears ® True Lug Butterfl y Valves offer factory installed lugs which
allow fl ange connections from either side, regardless of direction fl ow.
This instruction covers general Installation for all Spears
Butterfl y Valves. All applicable instructions and procedures should be read
thoroughly before starting. Suitability of the intended service application should
be determined before installation. Plastic piping systems should be engineered,
installed, operated & maintained in accordance with accepted standards and
procedures for plastic piping systems.
CAUTION: Connecting Flanges must have an inside diameter not less than that
of PVC Schedule 80 Pipe (ASTM D 177-85) to maintain operation clearance
with the disc. Flange bolt pattern conforms to ANSI Class 125/150.
IMPORTANT: Read Precautions & Warnings for all Valve Installations at
the end of these instructions. It is absolutely necessary that all design,
installation, operation & maintenance personnel be trained in proper
handling, installation requirements and precautions for installation & use
of plastic piping systems before starting.
HANDLE INSTALLATION & REVERSAL
The Valve Handle (or optional Gear Operator) can be installed for either left
or right side operation. CAUTION: Do not remove Orange Disc Timing-Stop
Plate located below handle assembly.
HANDLE COVER
HEX
HEAD
BOLT
(ENLARGED)
FLAT
WASHER
HANDLE
BUSHING
HANDLE
BODY
VALVE
BODY
BF-3A-0410
Spears Butterfl y Valves are designed for
®
the system connection either between two
fl anges, or with single-side (fl ange one side
only) connection for dead-end service. Valve
can be installed for fl ow in either direction in
a dual-fl ange installation.
Spears ® Standard Butterfl y Valves (12" &
smaller) accept fi eld installable lug insert
sets for quick conversion to a lug style.
PVC, CPVC, & PP
®
HANDLE INSTALLATION:
Place handle and bushing over metal
stem in one of two desired positions
being sure that arrows on valve
body match direction of pointer on
handle body. Install hex nut & fl at
washer onto top of stem, tighten and
torque to 40 in-lb. Snap cover back
to handle body.
To reverse the Handle position by
180°, fi rst set valve to the fully open
position. Remove the snap-in cover
from the top of the handle to expose
the retaining nut, remove it & the fl at
washer. Lift handle & handle bushing
assembly from valve stem, reposition
handle 180° on valve stem, reinstall
fl at washer & retaining nut, torque to
40 in-lb. Snap cover back into place.
1
GEAR OPERATOR INSTALLATION & REVERSAL
ADAPTER SQUARE
NUT HANDLE
ADAPTOR
HAND
WHEEL
STOP
ADJUSTMENT
SCREWS (2)
DRIVE
BUSHING
STEM
GEAR
OPERATOR
MOUNT
BOLTS (x 4)
VALVE BODY
STEP 1
GEAR OPERATOR HAND WHEEL INSTALLATION:
hub over square handle adaptor and install the adaptor nut. Torque to 10 ft-lb.
TO REVERSE THE GEAR OPERATOR POSITION 180°:
position. Remove the 4 mounting bolts & fl at washers that secure the gear
operator to the valve body, lift the assembly & drive bushing from the valve
stem. NOTE: Drive bushing is timed to operator with a single oversize spline
tooth & index mark. Turn gear operator assembly 180° and reinstall onto valve
stem being sure to align bushing oversize spline with its matching oversize
groove in the gear operator. Reinstall all mounting bolts & fl at washers, and
torque to 10 ft-lb.
STEP 2
GEAR OPERATOR POSITION ADJUSTMENT:
grommets from end of Gear Operator housing adjacent to the "OPEN"
designation, to allow access to the "stop adjustment screws".
CLOSED POSITION:
CLOSED
Measure distances from both leading edges of the disc
(perpendicular to stem) to the gasket sealing surface on
the seat side of the valve. These distances should be equal
Equal
Distance
when properly adjusted for the closed position. If not, use an
Each
Side
Allen wrench to adjust the stop located on the "O" side of the
"OPEN" designation until proper position is reached. Reinstall
rubber grommets in operator housing.
OPEN
OPEN POSITION:
Disc should be positioned squarely at 90° to valve body
when properly adjusted for the open position. If not, use an
Allen wrench to adjust the stop located on the "N" side of the
"OPEN" designation until proper position is reached. Reinstall
rubber grommets in operator housing.
BOLT PREPARATION FOR ASSEMBLY
Once a fl ange is attached to the pipe or valve, the method of joining two
fl anges is as follows:
LUBRICATION WARNING: Some Lubricants,
including vegetable oils, are known to cause
stress cracking in thermoplastic materials.
Formulation changes by lubricant manufacturers
may alter compatibility of previously acceptable
materials and are beyond our control.
INDICATOR CAP
HEX HEAD CAP SCREW
GEAR OPERATOR
*
DRIVE BUSHING
OVERSIZE
SPLINE
Place hand wheel
Set the valve in the open
Remove 2 rubber
Rotate Hand Wheel to full closed position.
Rotate Hand Wheel to the full open position.
2
*