Spears Y-Pattern Instrucciones De Instalación

Y-Pattern Valve
Installation Instructions
determined prior to installation. Plastic piping systems must be engineered,
installed, operated and maintained in accordance with accepted standards
and procedures for plastic piping systems. It is absolutely necessary that
all design, installation, operation and maintenance personnel be trained in
proper handling, installation requirements and precautions for installation
and use of plastic piping systems before starting. Y-Pattern Valves are
designed for direct in-line installation without any adjustments.
See "Precautions and Warnings" for all installations in this instruction.
SOLVENT CONNECTIONS
Pipe Preparation - Prepare connecting pipes
as required. Pipe ends must be cut square at
90° using a wheel type cutter or a saw and
miter box.
Regardless of the cutting method used, burrs
will be created, which must be removed. All
pipe ends should be beveled at 10° to 15°.
A deburring tool is recommended, however
a fi le may be used in its place as shown.
Wipe away all loose dirt and moisture from
pipe end and valve socket.
YV-3A-1001
Y-Pattern Valves are designed for
proportional throttling and control of
fl uid fl ow. Valves may be mounted
in any position, however, attention
to direction of fl ow is required for
optimum valve function and is
designated by the arrow on the valve
body.
Read all applicable instructions
and procedures thoroughly before
starting. Suitability of the intended
service application
STEP 1
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CAUTION: Care must be taken to prevent primer or cement contact with seat or
internal valve components.
STEP 2
Primer Application - Primer is necessary to penetrate & soften both pipe and
socket connector surfaces in order for the solvent cement to properly bond.
Using a brush or applicator size no less than 1/2 the pipe diameter, apply
a liberal coat of primer with a circular, scrubbing motion to the inside socket
of the Y-Pattern Valve, until the surface is softened and semi-fl uid. This will
occur in 5 to 15 seconds depending on size and temperature. Apply primer
must be
to the outside of new pipe ends in the same manner extending application
area to slightly beyond the insertion depth of the Y-Pattern Valve socket.
APPLY A SECOND COAT TO BOTH PIPE AND SOCKET.
THE MOST FREQUENT CAUSE OF JOINT FAILURE IS INADEQUATE
PRIMER PENETRATION AND SOFTENING OF BONDING SURFACES
DURING THE WELDING OPERATION.
STEP 3
Solvent Cement End Connection - Solvent Cement must be applied
IMMEDIATELY to the primed surfaces before the primer dries, in an
alternating 3-coat application. Using a brush or applicator no less than 1/2
the pipe diameter, apply a liberal coat of solvent cement to the primed pipe
surfaces. Next, apply a light to medium coat to the primed socket surface,
then apply an additional liberal coat again to the pipe.
Check the penetration and softening by scraping
the primed surfaces. A few thousandths of the
semi-fl uid surface should easily be removed.
REPEAT PRIMER APPLICATION IF NECESSARY.
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