Spears PVC Cédula 80 Instrucciones De Instalación

EXPANSION JOINT / REPAIR COUPLING
Read all applicable instructions and procedures thoroughly before starting. Suitability of the
intended service application must be determined prior to installation. Expansion Joints require
specifi c positioning on an axial alignment. PVC and CPVC piping systems must be engineered,
installed, operated and maintained in accordance with accepted standards and procedures for
thermoplastic piping systems. It is absolutely necessary that all personnel associated with the
above be properly trained in these procedures before starting
DETERMINE TRAVEL LENGTH NEEDED
System expansion and contraction are determined from anticipated temperature change in the system
from both ambient and internal fl uid temperatures.
General Rule of Thumb for All Pipe Diameters
PVC: Allow 3/8" expansion for every 10°F (5.6°C) change in temperature per 100 feet of pipe.
CPVC: Allow 1/2" expansion for every 10°F (5.6°C) change in temperature per 100 feet of pipe
For example, a 6" travel expansion joint will accommodate approximately 160°F temperature change
in 100 ft. of PVC pipe (16 x 3/8" = 6") or approximately 120°F temperature change in 100 ft. of CPVC
pipe (12 x 1/2" = 6").
Approximate Travel Length for Various Changes in System Temperature
10°F 30°F 50°F
Amount of Temperature
CHANGE
6°C 17°C 28°C
PVC length change
3/8" 1-1/8" 1-7/8"
per 100 ft.
CPVC length change
1/2" 1-1/2" 2-1/2"
per 100 ft.
( Maximum material operating temperature: PVC = 140°F — 60°C
TYPICAL
PIPE ALIGNMENT GUIDES
EXPANSION JOINT
thermal expansion of insulated or non-insulated pipe in the
INSTALLATION direction permitted by Spears
Example 1
Anchors are required to support and
restrain pipe at each end of the run
and at each Expansion Joint. Guides
should be placed close to the piston
shaft pipe connection to maintain
axial alignment. Add guides to the
pipe run to prevent snaking.
Example 3
While expansion is
not determined by
pipe diameter, a sep-
arate Expansion Joint
for each diameter is
recommended. Install anchors at each end of run
and at the reduction location. Install with guides for
support as in Example 1.
Alternative Methods of Extension for Completing Joint Installation on larger sizes.
PVC & CPVC Schedule 80
Installation Instructions
EJ-3A-0816
Spears ® Expansion Joints allow the
telescoping movement of an inner
pipe within a fi rmly mounted outer
sleeve to accommodate expansion and
contraction in a piping system. Available
in a variety of nominal pipe sizes with 6"
or 12" maximum travel lengths. Spears
Expansion Joints may also be used as
repair couplings.
.
70°F 90°F 100°F 120°F 140°F
39°C 50°C 56°C 67°C 78°C
2-5/8" 3-3/8" 3-3/4" 4-1/2" 5-1/4"
3-1/2" 4-1/2" 5" 6" 7"
CPVC = 180°F — 82°C )
1
are designed for use in directing
® Expansion Joints.
Pipes and Expansion Joint MUST be
properly aligned.
Typical GUIDE
Typical ANCHOR
Example 2 Example 2
Where calculations require two Expansion Where calculations require two Expansion
Joints, divide run equally with additional Joints, divide run equally with additional
anchor in the center and install with guides anchor in the center and install with guides
for support as in Example 1. for support as in Example 1.
Example 4
Branched runs should be divided
into segments and anchored at the
end of each run and in each direc-
tion at the Tee branch. Install with
guides for support as in Example 1.
3
Initial positioning of the Expansion Joint piston depends on the anticipated temperature change in
relation to the system temperature at the time of installation. Where temperature changes will not
exceed approximately + 25° F from the system temperature at the time of installation, the Expansion
Joint can be installed at the factory preset midpoint. Remove cardboard spacer with tape-tab after
installation. If desired, the extended position for installation may be additionally adjusted to specifi c
system and installation parameters using the following calculation:
Sample: A straight run of pipe will operate in conditions where the maximum temperature (T) will be
110°F, the lowest temperature (F) will reach 60°F and the actual temperature (A) at installation is 75°F
and maximum joint extention (E) is 6" or 12" (6" product confi guration used). Calculate as follows:
®
Where T = Maximum temperature the system will experience; F = Minimum temperature the
system will experience.; A = Actual temperature of the system at the time of installation;
E = Maximum joint extension and P = Actual piston extension at installation.
This formula works with both English and Metric measurements. Do not mix °F with °C.
60°F
Low System
Temperature
Alignment is critical, axial guides should be installed to direct straight movement into expansion joint.
Support & Thrust Block system to prevent binding of unit or system damage during operation.
Protect cylinder shaft from scratches, damage and debris to prevent leaks.
Solvent Cement end connections according to procedures shown at the end of this instruction.
Do Not allow solvent cement to contact cylinder shaft or interior surface. Follow cement manufacturer's
instructions for proper application, set and cure time.
Painting - Where painting piping with a white latex paint is used to inhibit sun exposure, do not apply
paint to telescoping shaft of the Expansion Joint to prevent possible damage to internal seals.
Direct Burial - Expansion Joints and telescoping Shaft must be covered with a suitable shield in
direct burial systems to prevent damage from dirt of sediment. Anchoring or thrust blocking and align-
ment must be maintained.
Anchor Support & Guides Use – Anchors support all loads and restrain piping at key points in order to
160°F
force movement towards the Expansion Joint(s). Guides are not pipe supports, but must be rigidly at-
89°C
tached to sub-structure to maintain alignment and restrict lateral movement while allowing free longitudinal
movement. When metal IPS sized pipe guides are used, care must be taken to remove all burrs and
6"
sharp edges from the pipe clamp. Do not over-tighten clamp around pipe to avoid damage. Vertical lines
also require adequate support intervals to prevent excessive loading to lower fi ttings. The Expansion Joint
8"
should be positioned at an anchor for support with the fi rst guide near the telescoping shaft connection
and a second guide relatively close to the fi rst to aid alignment. Follow standard industry guidelines for
pipe support and spacing of guides throughout the run, as recommended by pipe manufacturers.
CUT PIPE 90°
90°
90°
Miter Saw
Wheel-type Cutter
For best results, installation must be made at temperatures between 40°F (5°C) and 110°F (43°C).
All joint components must be inspected for any breaking, chipping, gouging or other visible damage
before proceeding. All pipe, fi ttings 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.
USE CORRECT
APPLICATOR SIZE
1
1
½
IMMEDIATELY
JOIN PARTS
CAUTION: Avoid cement contact with Expansion Joint shaft.
CAUTION: The system must be designed and installed to avoid stress loads other than the purpose-
designed expansion/contraction along the longitudinal [lengthwise] axis of the Expansion Joint. Pipe must be
cut and supported so that all stress loads associated with bending or shifting are avoided. Expansion Joint
must be supported to maintain axial alignment.
CAUTION: BEFORE THE JOINT IS CYCLED, all dirt, sand, grit or other material must be wiped externally
from the piston/sleeve and internally fl ushed from the system. This is to prevent scarring of internal
components; e.g., piston sleeve, O-rings, piston bore, etc.
WARNING: Systems must not be operated or fl ushed out at fl ow velocities greater than 5 feet per second
LUBRICATION WARNING: Some Lubricants, including vegetable oils, are known to cause stress
cracking in thermoplastic materials. Lubricants are not required for installation of Spears
Joints.
All air must be bled from the system during initial fl uid fi ll. Pressure testing of the system must not be made
until all solvent cement joints have properly cured. Initial pressure testing must be made at approximately
10% of the system hydrostatic pressure rating to identify potential problems, prior to testing at higher
pressures.
15853 Olden Street, Sylmar, CA 91342 PO Box 9203, Sylmar, CA 91392
© Copyright 2016 Spears
®
DETERMINING PISTON POSITION AT INSTALLATION
110°F - 75°F
110 - 60°F
INSTALLATION GUIDELINES
Maximum Extension
High of 120, low of
50. installation temp
80 = 4.2"
75°F
Installation Installation Extension
Temperature
110°F
High System Minimum Position
Temperature
2
SOLVENT CEMENT WELDING PROCEDURES
DEBURR & BEVEL PIPE
Full Interference Fit
Deburring
Tool
APPLY APPLY QUICKLY APPLY
PRIMER:SOCKET PRIMER: PIPE CEMENT: SOCKET
PUSH IN: HOLD 30 WIPE EXCESS
TWIST 90° SECONDS CEMENT
PRECAUTIONS AND WARNINGS
NOT FOR DISTRIBUTION OF COMPRESSED AIR OR GAS
SPEARS ® MANUFACTURING COMPANY
CORPORATE OFFICE
(818) 364-1611 • www.spearsmfg.com
Manufacturing Company. All Rights Reserved. Printed in the United States of America 08/16.
4.2
DRY CHECK JOINT INTERFERENCE FIT
Net Fit
½
Socket
Depth
PIPE
PIPE
Socket
Socket
Depth Depth
QUICKLY APPLY
CEMENT: PIPE
.
® Expansion
EJ-3A-0816