Multi-Fittings Solvent Weld PVC DWV, Blue Brute, Trench Tough Plus, Cycle Tough Installation Manual
Installation
Guide
www.multifittings.com
Trench Tough Plus
TM
Blue Brute
®
Cycle Tough
®
Ultra-Rib
®
Solvent Weld PVC DWV
Multi Fittings Corp. maintains a policy of
ongoing product improvement. This may result
in modification of features or specifications
without notice.
This booklet is meant as a general installation
guide for Trench Tough Plus
TM
, Blue Brute®,
Cycle Tough
®
, Ultra-Rib®and Solvent Weld &
PVC DWV fittings. For specific needs or
applications, please contact your local supplier
or one of our customer service offices.
Multi Fittings Installation Guide
TABLE OF CONTENTS
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
MULTI FITTINGS MEET THESE STANDARDS . . . . . .6
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Pressure Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Gasketed Sewer Fittings . . . . . . . . . . . . . . . . . . . . . . . .6
PVC DWV Fittings - Solvent Weld . . . . . . . . . . . . . . . . .7
SDR35 Sewer Fittings - Solvent Weld . . . . . . . . . . . . . .7
RECEIVING AND HANDLING FITTING SHIPMENTS .8
Before Accepting the Shipment . . . . . . . . . . . . . . . . . . .8
Storage at the Job Site . . . . . . . . . . . . . . . . . . . . . . . . .8
Extremely Cold Weather . . . . . . . . . . . . . . . . . . . . . . . .9
Prolonged Outdoor Storage . . . . . . . . . . . . . . . . . . . . . .9
UNDERGROUND BURIAL OF FITTINGS . . . . . . . . .10
Trench Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Excavating and Preparing the Trench . . . . . . . . . . . . .10
Flotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
The Bottom of the Trench . . . . . . . . . . . . . . . . . . . . . . .11
Lowering the Fittings into the Trench . . . . . . . . . . . . . .11
1
HAUNCHING & BACKFILLING . . . . . . . . . . . . . . . . .12
Initial Backfill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Final Backfill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Compacting the Backfill . . . . . . . . . . . . . . . . . . . . . . . .13
Embedment Materials . . . . . . . . . . . . . . . . . . . . . . . . .14
Selection of Embedment Materials . . . . . . . . . . . . . . .15
2
GASKETED PVC PRESSURE FITTINGS
PREPARING FOR ASSEMBLY . . . . . . . . . . . . . . . . . .16
Preparing the Spigot . . . . . . . . . . . . . . . . . . . . . . . . . .17
Assembling the Joint . . . . . . . . . . . . . . . . . . . . . . . . . .18
CURVATURE IN THE PIPELINE SYSTEM . . . . . . . . .20
Using Blue Brute or Cycle Tough Fittings . . . . . . . . . .20
Deflecting the Fitting Joint . . . . . . . . . . . . . . . . . . . . . .21
OUTSIDE DIAMETER CONSIDERATIONS . . . . . . . .22
Blue Brute Fittings Cast Iron Outside Diameter (CIOD) .22
Blue Brute Dimensional Data . . . . . . . . . . . . . . . . . . . .23
Cycle Tough IPS Fittings Outside Diameter . . . . . . . . .27
Cycle Tough Engineered Joint . . . . . . . . . . . . . . . . . . .27
Cycle Tough Dimensional Data . . . . . . . . . . . . . . . . . .29
FABRICATED PVC PRESSURE FITTINGS . . . . . . . .36
Fabricated Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Butt Fusion Fabricated Fittings . . . . . . . . . . . . . . . . . .37
Butt Weld Fabricated Fittings . . . . . . . . . . . . . . . . . . . .37
Multi Fittings Installation Guide
RESISTING THRUST AT PRESSURE FITTINGS &
VALVES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Bearing Strength of Undisturbed Soils . . . . . . . . . . . . .39
Resisting Thrust in Very Poor Soils . . . . . . . . . . . . . . .40
Resisting Vertical Thrust . . . . . . . . . . . . . . . . . . . . . . .41
Holding Pipe and Fittings to Steep Slopes . . . . . . . . .42
Mechanical Thrust Restraints for Fittings . . . . . . . . . . .42
FLANGED JOINTS . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Service Connections . . . . . . . . . . . . . . . . . . . . . . . . . .43
Tapped Couplings . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
THE PIPELINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Leakage and Pressure Tests . . . . . . . . . . . . . . . . . . . .44
Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Multi Fittings Installation Guide
TRENCH TOUGH PLUS AND ULTRA-RIB GASKETED
SEWER FITTINGS
STARTING THE JOB . . . . . . . . . . . . . . . . . . . . . . . . . .47
Gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Line and Grade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Assembly of Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Lubricant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Curved Sewers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Field Cut Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Manhole Connections . . . . . . . . . . . . . . . . . . . . . . . . .51
Service Connections . . . . . . . . . . . . . . . . . . . . . . . . . .52
Sewer Laterals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Riser Problems Demand Special Attention . . . . . . . . .55
Backfilling and Tamping . . . . . . . . . . . . . . . . . . . . . . . .56
Tamping Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . .57
TESTING OF SEWERS . . . . . . . . . . . . . . . . . . . . . . . .58
Joint Tightness Testing . . . . . . . . . . . . . . . . . . . . . . . . .58
Deflection Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
Videos . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
Shallow Burial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
3
SOLVENT WELD SEWER AND DWV FITTINGS
SOLVENT CEMENTING . . . . . . . . . . . . . . . . . . . . . . .65
Basic Principles of Solvent Cementing . . . . . . . . . . . .65
SOLVENT CEMENTING INSTRUCTIONS . . . . . . . . .67
Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
Storage Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
Cold Weather . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
Initial Set Time Schedule . . . . . . . . . . . . . . . . . . . . . . .72
Joint Cure Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . .73
4
APPENDICES
APPENDIX I:
Dimensions of Cycle Tough Pressure Pipes
with IPS OD’s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
APPENDIX II:
Dimensions of Blue Brute and
Centurion Pressure Pipes with CIOD’s . . . . . . . . . . . .76
APPENDIX III:
Percent % Deflection of Blue Brute Pipe and
Blue Brute C907 Fittings . . . . . . . . . . . . . . . . . . . . . . .77
APPENDIX IV:
Percent % Deflection for Centurion Pipe and
Fabricated Blue Brute s C900 Fittings . . . . . . . . . . . . .78
APPENDIX V:
Percent % Deflection for Cycle Tough Pipe and
Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
APPENDIX VI:
Percent % Deflection for Trench Tough Plus SDR35
and Trench Tough Plus SDR26 Heavy Wall Fittings . .80
APPENDIX VII:
Pipe Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82
Multi Fittings Installation Guide
APPENDIX VIII:
Lubricant Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
Multi Fittings Installation Guide
INTRODUCTION
5
This booklet will meet the needs of fitting installers looking
for general recommendations on how to install Blue
®
Brute
, Cycle Tough®, Trench Tough PlusTMgasketed
sewer, Ultra-Rib
®
, Solvent Weld sewer and PVC DWV
fittings. Out-of-the-ordinary conditions not covered here
should be referred to the Engineer or his inspectors to
provide on-site solutions. In such cases Multi's advice is
always available. Our objective is to encourage the use of
methods that lead to a professional installation that will
ensure the maximum service life for our fittings.
The Engineer who designs the pipe and fitting system will
determine how it should be installed. It is not our intention
that the Guide should assume that responsibility unless
the Engineer so directs the installer.
This booklet sets out the preferred methods of installation
based on Multi's experience and on a number of published
reports from other industry sources. Users will find additional
helpful advice published by the Uni-Bell PVC Pipe
Association and available from Multi on request.
Readers are invited to order a copy of the "Uni-Bell
Handbook of PVC Pipe - Design and Construction". This
comprehensive reference manual, with over 400 pages,
covers all aspects of
design and installation
for PVC pipe and
fittings. Call Uni-Bell at
(972) 243-3902
to order.
Introduction
6
Multi Fittings Installation Guide
MULTI FITTINGS MEETS THESE STANDARDS
The list below identifies some industry standards in use
today regarding manufacturing, quality control and proper
installation of PVC sewer pipe and fittings.
ABBREVIATIONS
Introduction
CSA Canadian Standards Association
ASTM American Society for Testing and Materials
UNI-B Uni-Bell PVC Pipe Association
AASHTO American Association of State Highway and
Transportation Officials
AWWA American Water Works Association
NSF National Sanitation Foundation
PRESSURE FITTINGS
CSA B137.2 PVC Injection Molded Gasketed Fittings
for Pressure Applications
CSA B137.3 Large Diameter Fabricated PVC Pressure
Fittings
AWWA C900 Polyvinyl Chloride (PVC) Fabricated
Fittings 10" through 12"
AWWA C907 Polyvinyl Chloride (PVC) Injection Molded
Pressure Fittings for water - 4" through 12"
AWWA C905 Polyvinyl Chloride (PVC) Fabricated
Fittings, 14" through 48"
AWWA C605 Underground Installation of Polyvinyl
Chloride (PVC) Pressure Pipe
ASTM D2241 Polyvinyl Chloride (PVC) Pressure Rated
Pipe (SDR Series)
GASKETED SEWER FITTINGS
CSA B182.1 Plastic Drain and Sewer Pipe and Fittings
CSA B182.2 PVC Sewer Pipe and Fittings
CSA B182.4 Profile (Ribbed) PVC Sewer Pipe and
Fittings
CSA B182.11 Recommended Practice for the Installation
of Thermoplastic Drain, Storm & Sewer
Pipe and Fittings
ASTM D2321 Underground Installation of Flexible
Thermoplastic Sewer Pipe
Multi Fittings Installation Guide
ASTM D3034 Type PSM Polyvinyl Chloride (PVC) Sewer
Pipe and Fittings
ASTM D3212 Joints for Drain and Sewer Plastic Pipes
Using Flexible Elastomeric Seals
ASTM F477 Elastomeric Seals for Joining Plastic Pipes
ASTM F679 Polyvinyl Chloride (PVC) Large Diameter
Plastic Gravity Sewer
ASTM F794 Polyvinyl Chloride (PVC) Ribbed Gravity
Sewer Pipe and Fittings
ASTM F913 Thermoplastic Elastomeric Seals
(Gaskets) for Joining Plastic Pipe
ASTM F1336 Polyvinyl Chloride (PVC) Gasketed Sewer
Fittings
UNI-B-6 Recommended Practice for Low-Pressure
Air Testing of Installed Sewer Pipe
UNI-PUB-6 Installation Guide for PVC Sewer Pipe
UNI-TR-1 Deflection: The Pipe/Soil Mechanism
UNI-TR-6 PVC Force Main Design
AASHTO M278 Class PS46 Polyvinyl Chloride (PVC)
Piping Systems for Subsurface Drainage
of Transportation Facilities
AASHTO M304Polyvinyl Chloride (PVC) Ribbed Drain
Pipe and Fittings Based on Controlled
Inside Diameter
7
Introduction
PVC DWV FITTINGS - SOLVENT WELD
NSF 14 Plastic Piping Systems Components &
Related Materials
ASTM F1866 PVC Plastic Schedule 40 Drainage and
DWV Fabricated Fittings
ASTM D2665 Polyvinyl Chloride (PVC) Plastic Drain
Waste and Vent Pipe and Fittings
SDR35 SEWER FITTINGS - SOLVENT WELD
CSA B182.1 Plastic Drain and Sewer Pipe and Fittings
CSA B182.2 PVC Sewer Pipe and Fittings
ASTM D3034 Type PSM Polyvinyl Chloride (PVC) Sewer
Pipe and Fittings
ASTM D2729 Polyvinyl Chloride (PVC) Sewer Pipe and
Fittings
8
Multi Fittings Installation Guide
RECEIVING AND HANDLING
FITTING SHIPMENTS
BEFORE ACCEPTING THE SHIPMENT
Our fittings are manufactured to a number of standards,
Introduction
none of which are more demanding than Multi's own
Standard Product Specifications. Quality Control
inspection of the products before they leave our plants
ensures that only the highest quality products are
shipped. Damage to the fittings, or shortages, are
possible and must be checked before the shipment is
received and signed for by the contractor.
1. The contractor should inspect each fitting as it is
unloaded.
2. Check the quantity shipped against the tally sheet.
The contractor must note any shortages on the
trucker's bill of lading.
3. Carefully note any sign of damage to the fittings in
the form of cracks, chips or other damage.
4. DO NOT THROW AWAY ANY DAMAGED MATERIAL.
Mark it carefully for further inspection by the carrier
or their representative.
5. Re-order any fittings that are needed to make up for
missing or damaged fittings.
6. Notify the carrier immediately and enter a claim for
damaged or missing parts in accordance with their
instructions.
STORAGE AT THE JOB SITE
The preferred method of storage at the job site is in boxes
or crates as shipped.
Multi Fittings Installation Guide
EXTREMELY COLD WEATHER
9
Although PVC fittings have very good impact resistance,
they offer slightly reduced impact resistance at very low
temperatures (below freezing). Do not allow the fittings to
fall or be thrown off the truck or into the trench.
PROLONGED OUTDOOR STORAGE
Prolonged exposure of PVC fittings to the direct rays of
the sun will not damage the fittings. However, some mild
discoloration may take place in the form of a milky film on
the exposed surfaces. This change in color merely
indicates that there has been a harmless chemical
transformation at the surface of the fitting. Physical
properties such as pipe stiffness and tensile strength are
unaffected by surface discoloration. However, a small
reduction in impact strength could occur at the discolored
surfaces. These are of a very small order and will not
affect a proper field installation. Multi Fittings products that
are exposed to sunlight will still exceed all of the impact
requirements of the standards.
Discoloration of the fittings can be avoided by shading
them from the direct rays of the sun. This can be
accomplished by covering the fittings with an opaque
material such as canvas. If the fittings are covered, always
allow for the circulation of air through the fittings to avoid
heat buildup in hot summer weather. Do not store the
fittings in plastic bags in warm climates for long periods of
time. Make sure that the fittings are not stored close to
sources of heat such as boilers, steam lines, engine
exhaust outlets, etc. If the fitting will be installed in an
exposed application, the fitting can be protected by
painting with a water based “latex paint” only.
Introduction
10
Multi Fittings Installation Guide
UNDERGROUND BURIAL OF
FITTINGS
TRENCH PREPARATION
SAFETY
Introduction
Trenches can be dangerous places. The contractor is
responsible for ensuring that all applicable regulations
have been observed and that the protection of the
workers and the general public is provided.
EXCAVATING AND PREPARING THE TRENCH
The drawings and bid documents will specify the correct
line and grade to be established by the trenching
operation. Aside from these engineering considerations
good bedding practices make sense for all types of pipe
and fittings, including PVC.
The width of the top of the trench will be determined by
local conditions. But at the “fitting zone” the trench width
should be kept to a practical minimum.
The general rule is that the maximum width at the top of
the fitting should not be more than the outside diameter of
the fitting plus 24". If trench width cannot be controlled
and will exceed the minimum then compacted backfill
must be provided for a distance of 2-1/2 fitting diameters
to either side of the fitting or to the trench wall. This is
applicable for fitting sizes up to 10". For larger sizes the
compacted haunching material should be placed one
fitting diameter or 24" (whichever is greater), to either side
of the fitting. The placement of the backfill under the fitting
haunches is important. For this reason you need enough
room at the sides of the fitting to slice the material under
the haunch and compact it. The minimum distance
required is 8" on either side of the fitting.
Keep the three basic operations close together: digging,
pipe and fitting laying and backfilling. The shortest
practical stretch of open trench reduces the possibility of
problems associated with water, frozen ground, impact
damage, flotation and traffic.
Multi Fittings Installation Guide
11
Initial
Fitting
Zone
e
glin
rin
p
S
g
ittin
of F
Backfill
Haunching
Bedding
6 in.
Foundation
(may not be required)
ent
bedm
Pipeline Em
FLOTATION
Where the fitting is in a flooded condition and it is not
possible to remove standing water from the trench, the
fitting should be held at grade with a minimum backfill
cover of twice the fitting diameter.
THE BOTTOM OF THE TRENCH
The objective of bedding is to provide a continuous
support for the fitting at the required line and grade.
Frozen material should not be used to support or bed the
fitting. At least 4" of bedding material should be placed
under the fitting if rocky conditions exist. The bedding may
or may not be compacted, but in any event the projecting
bells of the fitting should be properly relieved in the trench
bottom so that the entire fitting is evenly supported by the
bedding. Where the trench bottom is unstable (organic
material, or "quick" sand or similar material), the trench
bottom should be over-excavated and brought back to
grade with an approved material.
Introduction
LOWERING THE FITTINGS INTO THE TRENCH
Place the fittings into the trench by hand, using ropes and
skids or slings on the backhoe bucket. Do not throw the
fittings into the trench. At this point the fittings are in a
good position for final inspection. Ensure there are no
damaged materials before assembly begins.
12
Multi Fittings Installation Guide
HAUNCHING & BACKFILLING
The material placed to the sides of the fitting from the
bedding to about the springline (center line) is intended to
help the fitting support the vertical loads. It is frequently a
material with sizes not larger than 1-1/2".
Introduction
INITIAL BACKFILL
The material placed over the fitting itself to a height of 6"
to 12" above the top of the fitting is the initial backfill. The
maximum size of stone in the initial backfill, where not
specified, should be 1-1/2". Where it is not otherwise
specified, the initial backfill may consist of the native
material in the trench provided it is free from large stones,
not frozen, and free of debris or other organic materials.
The purpose of the initial backfill is to protect the fitting
and the pipeline from the final backfill.
FINAL BACKFILL
The material placed over the initial backfill to the top of the
trench is the final backfill. If not otherwise specified, the
final backfill material may contain boulders up to 6" in
diameter and may consist of native material.
Multi Fittings Installation Guide
COMPACTING THE BACKFILL
13
Compact the haunching, initial backfill and final backfill in
accordance with the job drawings. Observe the following
precautions.
1. When a "self-compacting" material is used, such as
crushed stone, ensure that the material does not arch
or bridge beneath the haunch of the fitting. Remove
such voids with the tip of a spade.
2. When compacting the material underneath and at
either side of the fitting, do not allow the tool or the
machine to strike the fitting.
3. When compaction in excess of 85% standard proctor
density is required in the haunching area, ensure
that the compacting effort does not dislodge the
pipeline from the correct grade. If the compacting
effort dislodges the fitting, re-lay the fitting to the
correct grade.
PVC pressure fittings (DR14, DR18 and DR25) may
be buried with as little as 12" of cover and be
subjected to H-20 traffic loading. A minimum soil
stiffness of E’ = 1,000 psi is recommended in the
fitting zone of the trench for these conditions and this
type of fitting.
Introduction
PVC gasketed sewer fittings, with a minimum pipe
stiffness of 46 psi (DR35), may be buried with as little
as 12" of cover and be subjected to H-20 traffic
loading. A minimum soil stiffness of E’ = 1,000 psi is
recommended in the fitting zone of the trench for
these conditions.
For pressure or gasketed sewer fittings with a
minimum pipe stiffness less than 46 psi (DR41 and
DR51) a minimum cover of 24" is required with a
minimum soil stiffness of E’ = 1,000 psi.
4. It is not necessary to compact the initial backfill
directly over the top of the fitting for the sake of the
fitting's structural strength. However, it may be
necessary for the sake of roadway integrity.
14
5. A matrix of embedment materials can be successfully
Introduction
Multi Fittings Installation Guide
used with PVC fittings. Consult the table found in
Appendices III, IV or V on pages 77 - 79 for the
expected deflection given a particular embedment
material, compacted to a certain density. As can be
seen in this chart, at normal depths under 16' of
cover, compaction effort is used strictly to prevent
trench settlement.
EMBEDMENT MATERIALS
Some general rules about all soils to be used in a buried
pipeline trench include that they must be free of sharp
objects, sticks, large clumps, frozen material, organic
materials and boulders.
Most of the soil commonly found can be classified into
one of the following categories, which are referenced from
ASTM D2487.
Class 1
Angular, 1/4" - 1-1/2" graded stone, including a number of
fill materials such as coral, slag, cinders, crushed stone
or crushed shells.
Class 2
Coarse sands and gravels with a maximum particle size
of 1-1/2", including various graded sands and gravels
containing small percentages of fines, generally granular
and non-cohesive.
Class 3
Fine sand and clayey gravels, including fine sands, sandclay mixtures and gravel-clay mixtures.
Class 4
Silt, silty clays and clays including inorganic clays and
silts of medium to high plasticity and liquids limits.
Class 5
Includes organic soils such as frozen earth, debris and
other foreign materials. These materials are not
recommended for use in the bedding, haunch or initial
backfill zones.
Note: The performance of a flexible conduit does not
depend only on the class of embedment materials used,
but more importantly on the density achieved in
compaction of the haunching material.
Multi Fittings Installation Guide
SELECTION OF EMBEDMENT MATERIALS
15
Soil to be used in the pipe zone should be capable of
maintaining the specified soil density. For example, if a
coarse material such as Class 1 is used for bedding the
pipe, it should also be used in the haunch zone to the
springline of the pipe. Otherwise, side support may be
lost due to migration of the Class 2, 3 or 4 materials into
the bedding.
When selecting the embedment materials, ensure that
native soil migration from the trench walls cannot occur.
A well-graded compacted granular material will prevent
this condition from occurring. In trenches subject to
inundation, the granular material should be compacted to
a minimum of 85% Standard Proctor Density.
Introduction
16
Multi Fittings Installation Guide
GASKETED PVC PRESSURE FITTINGS
PREPARING FOR ASSEMBLY
All Multi PVC gasketed pressure fittings are prepared for
assembly as follows:
Keep both the spigot of
the pipe and the bell of
the fitting clean. It is
good practice to lay the
pipeline with the bells
forward so that the
assembly operation will
consist of pushing the
spigot into the bell. This
Pressure Fittings
will minimize the
possibility of contaminating the surfaces with foreign
material. All assemblies should be concentric.
Use an approved lubricant for all gasketed fittings. Apply
an NSF approved lubricant with pressure fittings used
with potable water. The use of substitute lubricants that
are not NSF approved may damage the gaskets and
should not be used.
Before inserting the spigot into the sealing gasket of the
fitting, make sure that the gasket is clean and that the
groove is free of any debris or dirt.
Multi Fittings Installation Guide
PREPARING THE SPIGOT
Pipe is generally shipped with a chamfer on the end of
the spigot. If there is no chamfer, follow the example of a
factory made spigot and machine a suitable chamfer for
easy insertion into the gasketed fittings.
From the chamfer using a
beveling tool, hand rasp or
disk cutter.
1 1/2"
Chamfer
15˚
Assembly
Line
Apply a thin coating of lubricant (about 1/32" thick,
equivalent to a brushed coating) using a glove, a rag, or a
paint brush. The area to be covered is as follows:
17
Pressure Fittings
Assembly
Line
1 1/2"
Lube Depth
Apply lubricant all around the
spigot chamfer plus
1 1/2" back.
1 1/2"
Chamfer
*For proper lubricant usage refer to page 84.
18
Multi Fittings Installation Guide
ASSEMBLING THE JOINT
Assemble the joint with a come-along and chain or use
one of the methods illustrated below.
The correct insertion depth in fitting
bells differs from the correct
insertion depth for pipe bells.
Factory-applied assembly lines on
pipe spigots should be ignored when
assembled to fittings. Special
assembly lines may be marked on
pipe ends by measuring the depth
of the fitting bell.
Successful assemblies of fittings
have been made by forming a
Pressure Fittings
scissors grip on the
leading bell with two implanted
crowbars. See Figure 1.
Assembly using two crowbars is
made easier when a special collar
is attached to the bell behind the
gasket race. Two projections at
either side of the collar allow a
more substantial grip in the bell.
See Figure 2.
Fig. 1
Fig. 2
Fig. 3
Fig. 4
When assembling in-line bell
fittings such as couplings and
tees, a crowbar and a 2 x 4 are all
that’s needed. See Figure 3.
For deflection fittings such as 45°
elbows an assembly jig should be
used to transfer the assembly
effort to the bell being assembled
rather than directly to the edge of
the trailing bell. The jig illustrated
is typical. See Figure 4.
The hinged “clamshell” of the assembly jig is opened and
positioned behind the gasket race of the bell as shown in
Figure 4. The two halves are pulled tightly together with
the chain and fixed by looping a link of the chain through
the slot in the hinged arm. The fitting can then be levered
home. If the clamshell tends to ride over the gasket race,
Fig. 5
Multi Fittings Installation Guide
Multi Fittings Installation Guide
stop the operation and retighten the chain. If the trailing bell
faces the wrong direction after assembly, immediately
rotate it by hand to the correct position. See Figure 5.
19
19
Adjoining lengths of pipe can be
Fig. 6
assembled in the usual way with
suitable support for the fitting when it
is not fixed in position by backfills.
See Figure 6.
FOR SIZES OVER 12 INCHES
Keeping the pipe spigot out of the dirt, position it so that
the chamfer is resting against the gasket in the bell of the
fitting. Push the spigot into the bell so that the assembly
line on the spigot is even with the edge of the bell. If there
are two assembly lines the edge of the bell should line up
between the two lines.
The assembly effort can be delivered by hand in small
diameters with the aid of a twist as the spigot enters the
bell of the fitting, or by using a bar and block. Other
assembly methods include lever pullers, hydraulic jacks,
and for large diameter pipe and fittings the IPEX Sure
Joint Puller or a backhoe bucket.
Where mechanical means are used, the assembly effort
should not be applied directly to the edge of the fitting. A
two by four or a plank should be placed between the
backhoe bucket and the edge of the fitting. The use of a
backhoe bucket has the disadvantage that the backhoe
operator is unable to see clearly when the assembly is
complete. A helper should be located near the assembly
to signal when the insertion is complete.
Pressure Fittings
OVER-ASSEMBLY OF THE JOINT COULD DAMAGE THE FITTING. ALWAYS
MAKE SURE THAT PREVIOUSLY ASSEMBLED JOINTS REMAIN UNDISTURBED.
If resistance is felt to the assembly it may mean that the
sealing gasket has somehow become dislodged. If so, the
joint should be disassembled, cleaned, and reconstructed
in accordance with the methods given above.
20
20
Multi Fittings Installation Guide
Multi Fittings Installation Guide
CURVATURE IN THE PIPELINE
SYSTEM
There are two common methods used to achieve
changes in direction with Multi pressure fittings. They are
1) using Blue Brute or Cycle Tough fittings and 2)
deflecting the joint.
A. USING BLUE BRUTE OR CYCLE TOUGH
FITTINGS
Changes in direction in a pipeline can also be achieved
by using PVC fittings. Multi offers standard 90°, 45°,
22½° and 11¼° bends. (Special radius bends are
available upon request.) Multi also offers 5° CIOD
sweeps in DR18 up to 16". The sweeps are bell x spigot
Pressure Fittings
as illustrated below.
The cut lengths and radii are as follows:
Size Cut Length Radius
(in) (in) (ft)
636 36
836 36
10 42 43
12 48 46
14 60 59
16 72 69
Multi Fittings Installation Guide
Multi Fittings Installation Guide
B. DEFLECTING THE FITTING JOINT
The close tolerances of Multi Fitting joints limit the amount
of unstressed deflection that can be taken by offsetting a
straight length of pipe. Injection Molded Blue Brute and
Cycle Tough fittings offer a 1° change in direction at each
bell. The procedure is as follows:
1. Make a concentric assembly, but push the spigot into
the bell of the fitting only to a point about 1/2" short of
the measured fitting bell depth. This incomplete
assembly permits more movement of the end of the
pipe at the bottom of the bell of the fitting.
2. Shift the loose bell end of the assembled length by
not more than the following recommended maximum
offsets. Use only manual effort.
t
f
0
2
21
21
Pressure Fittings
Offset
MAXIMUM RECOMMENDED OFFSETS, TO ACHIEVE
MINIMUM CURVE RADIUS BY DEFLECTING A
STRAIGHT LENGTH OF 20 FT. PIPE AT A FITTING
JOINT (FOR ALL DIMENSION RATIOS)
PIPE MAX ANGLE RESULTING RADIUS OF
SIZE OFFSET AT ONE CURVATURE USING
inches inches BELL 20 FOOT LENGTHS
Molded
PVC Fittings 4 1°** 1146 ft**
(all sizes)
** At each fitting bell. Bell by bell configurations such as
Tee's and Couplings offer a total of 2° deflection per fitting.
Note: If shorter lengths of pipe are used, the above offset
values must be multiplied by:
4" x length of pipe (in feet)
20
22
22
Multi Fittings Installation Guide
Multi Fittings Installation Guide
OUTSIDE DIAMETER
CONSIDERATIONS
Multi pressure fittings are available in two different outside
diameter dimensions in most nominal sizes. These are
Cast Iron (CIOD) and Iron Pipe Size (IPS) Outside
Diameters. The dimensions for these two different outside
diameters are shown in the Appendix on pages 75 and 76.
BLUE BRUTE®FITTINGS
CAST IRON OUTSIDE DIAMETER (CIOD)
These are the fittings normally associated with the
American Water Works Association Standards C900,
C905 and C907. Multi offers sizes of 4", 6", 8", 10" and
Pressure Fittings
12" with CIOD's in Class 100 (DR25), Class 150 (DR18)
and Class 200 (DR14). Also available are fitting sizes 14"
through 48" with CIOD's in PR 80 (DR51), PR100
(DR41), PR125 (DR32.5 to 42"), PR165 (DR25 to 36")
and PR235 (DR18, to 24" only). All CIOD PVC Pressure
Fittings by Multi are third party certified to CSA B137.3.
Multi Blue Brute PVC injection molded fittings are
available for cast iron O.D. pipe in sizes 4" through 12".
Direct assembly of CIOD pipes to these fittings should be
made following the principles given in the previous
sections. These fittings are supplied with the sealing
gasket inserted in the bells. Special transition gaskets
allow IPS O.D. pipe to also be used with Multi Blue Brute
fittings. Injection molded Cycle Tough PVC fittings are
also available for IPS O.D. pipes. Sealing gaskets supplied
for these fittings are not interchangeable with the gaskets
supplied for other pipes and fittings.
Note: Factory-made assembly lines on the pipe do not
indicate correct assembly to fittings.
Multi Fittings Installation Guide
BLUE BRUTE DIMENSIONAL DATA
Below are the exterior dimensions for each of the molded
Blue Brute fittings available from Multi.
90° ELBOW
Nominal
Size (in)A(in)B(in)C(in)
4 10.14 6.25 10.14 4.7
6 13.90 8.88 13.90 15.1
8 16.90 11.36 16.90 28.0
Wt./
(lbs)
45° ELBOW
Nominal
Size (in)A(in)
4 5.63 6.27 4.1
6 7.56 8.80 11.1
8 8.80 11.30 20.3
B
(in)
Wt./
(lbs)
23
Pressure Fittings
22½° ELBOW
Nominal
Size (in)A(in)
6 6.82 8.84 10.3
8 7.90 11.30 19.2
B
(in)
11½° ELBOW
Nominal
Size (in)A(in)
6 6.45 8.84 10.0
8 7.48 11.30 18.0
B
(in)
Wt./
(lbs)
Wt./
(lbs)
24
Pressure Fittings
Multi Fittings Installation Guide
REDUCING ADAPTER
SPIGOT x BELL
Nominal
Size (in)A(in)
6 x 4 5.8 4.3 7.5
8 x 6 12.5 5.5 9.4
10 x 8 7.3 5.8 11.3
12 x 10 10.1 6.5 19.8
B
(in)
COUPLING
Nominal
Size (in)A(in)B(in)C(in)
4 8.18 6.27 0.25 3.4
6 12.11 8.88 0.25 8.2
8 13.58 11.35 0.25 22.0
10 18.12 14.30 0.50 43.3
12 19.40 17.30 0.50 65.9
(available without center stop as a
repair coupling)
Wt./
(lbs)
Wt./
(lbs)
PLUG
Nominal Size
(in)
4 5.9 1.3
6 7.0 3.8
8 8.1 7.3
10 9.0 12.4
12 9.8 19.5
A
(in)
Wt./
(lbs)
Multi Fittings Installation Guide
Multi Fittings Installation Guide
SINGLE TAPPED COUPLING
Nominal
Size (in)A(in)B(in)C(in)D(in)
4 x 4 x 3/4 6.27 10.20 4.43 4.0
4 x 4 x 1 6.27 10.20 4.43 4.0
6 x 6 x 3/4 8.74 14.38 6.06 10.6
6 x 6 x 1 8.74 14.38 6.06 10.6
6 x 6 x 1-1/2 8.74 14.38 6.06 10.6
6 x 6 x 2 8.74 14.38 6.06 10.6
8 x 8 x 3/4 11.30 15.00 7.91 17.3
8 x 8 x 1 11.30 15.00 7.91 17.3
8 x 8 x 1-1/2 11.30 15.00 7.91 17.3
8 x 8 x 2 11.30 15.00 7.91 17.3
Note: 3/4" Taps to 2", Taps: AWWA Thread
DOUBLE TAPPED COUPLING
Nominal Size
(in)
6 x 6 x 3/4
6 x 6 x 1 x 3/4 14.38 8.74 1 6.06 3/4 10.5
6 x 6 x 1 x 1 14.38 8.74 1 6.06 1 10.5
6 x 6 x 11/4 x 3/4 14.38 8.74 11/4 6.06 3/4 10.5
6 x 6 x 11/4 x 1 14.38 8.74 11/4 6.06 1 10.5
6 x 6 x 11/2 x 3/4 14.38 8.74 11/2 6.06 3/4 10.5
6 x 6 x 11/2 x 1 14.38 8.74 11/2 6.06 1 10.5
6 x 6 x 2 x 3/4 14.38 8.74 2 6.06 3/4 10.5
6 x 6 x 2 x 1 14.38 8.74 2 6.06 1 10.5
8 x 8 x 3/
8 x 8 x 1 x 3/415.00 11.30 1 7.91 3/4 17.0
8 x 8 x 1 x 1 15.00 11.30 1 7.91 1 17.0
8 x 8 x 11/4 x 3/4 15.00 11.30 11/4 7.91 3/4 17.0
8 x 8 x 11/4 x 1 15.00 11.30 11/4 7.91 1 17.0
8 x 8 x 11/2 x 3/4 15.00 11.30 11/2 7.91 3/4 17.0
8 x 8 x 11/2 x 1 15.00 11.30 11/2 7.91 1 17.0
8 x 8 x 2 x 3/4 15.00 11.30 2 7.91 3/4 17.0
8 x 8 x 2 x 1 15.00 11.30 2 7.91 1 17.0
Note: 3/4" Taps to 2", Taps: AWWA Thread
A
(in)B(in)C(in)D(in)E(in)
3
x
/4 14.38 8.74 3/4 6.06 3/4 10.5
3
4 x
/415.00 11.30 3/4 7.91 3/4 17.0
Wt./
(lbs)
Wt./
(lbs)
25
25
Pressure Fittings
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