Spears BV-3A-1006 Instrucciones De Instalación

Compact, CTS, Lab & Utility Ball Valve
Installation Instructions
Read all applicable instructions and procedures
thoroughly before starting.
intended service application must be determined
prior to installation. Please review "Material
Considerations in Application and System
Design", in the Materials section of Spears
THERMOPLASTIC VALVE PRODUCT GUIDE
& ENGINEERING SPECIFICATIONS, V-4, for
important additional considerations related to valve installations. 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.
Valves are factory sealed with fixed end connectors and require no adjustments
or maintenance. (See "Precautions & Warnings for All Valve Installations" on
back page).
INSTALLATION INSTRUCTIONS
STEP 1
Prepare connecting pipe as required for solvent cement, thread,
or flanged connections.
STEP 2
With valve in the open position, support valve body to hold its
weight. Attach one end connector of valve to the pipe, making sure the valve is
aligned with pipe, according to the Solvent Cementing or Threading procedures
on the following pages.
STEP 3
Repeat Step 1 to attach opposite end connector of valve to pipe,
making sure valve is aligned with pipe.
STEP 4
Pressure test system only after all solvent cement joints have
fully cured. Flanged connections may require additional tightening after initial
pressure testing.
BV-3A-1006
Suitability of the
1
SOLVENT CEMENT WELDED JOINTS
For best results, installation must be made at temperatures between 40°F and
110°F. All joint components must be inspected for any breaking, chipping,
gouging or other visible damage before proceeding. All pipe, fittings and
valves must be removed from their packaging or containers and exposed to
the installation environment for a minimum of one hour in order to thermally
balance all components. All joining components must be clean and dry.
Be sure the valve is in the open position to aid in evaporation of solvent vapors
which can attack internal components. TAKE EXTRA CARE THAT NO PRIMER
OR SOLVENT CEMENT IS ALLOWED TO COME IN CONTACT WITH THE
BALL OR OTHER INTERNAL VALVE COMPONENTS.
®
STEP 1
Cut Pipe Square
Pipe ends must be cut
square, using a wheel-type
cutter or saw & miter box. A
fine-toothed hand saw (16-
18 teeth/inch) with little or no
set is recommended. A power
cut-off saw with carbide
blade is recommended for
high volume cutting.
STEP 2
Deburr & Bevel Pipe
Regardless of cutting method
used in step 1, burrs are
created which must be
removed from both the
pipe I.D. and O.D before joining. All pipe ends must be beveled 10° to 15°.
Commercially available deburring & beveling tool is recommended, or a mill file
may be used.
An interference between pipe and valve socket is necessary for proper
fusion of the joint. To check, lightly insert pipe into fitting socket. DO NOT
FORCE. Interference between pipe and valve must occur between 1/2 of the
socket depth (full interference fit) and the socket bottom (net fit). Do not use
components which improperly mate.
Full Interference Fit
PIPE
Socket
Depth
90°
90°
Deburr
STEP 3
Clean Joint Components
Wipe away all loose dirt and moisture from the pipe
O.D. and fitting I.D. with a clean, dry cotton cloth.
DO NOT ATTEMPT TO JOIN WET SURFACES.
STEP 4
Check Dry Joint Interference Fit
Net Fit
½
Socket
Depth
PIPE
Socket
Depth
2
Bevel