Smith Blair 274 Bell Joint Leak Clamp Installation Guide
- June 13, 2024
- Smith-Blair
Table of Contents
Smith Blair 274 Bell Joint Leak Clamp
Installation Instructions
STEP 1
Inspect the shipment received to ensure no damage has occurred during transit
or storage and that no hardware is missing. Ensure the received bell joint
leak clamp is the correct size for the installation prior to beginning.
STEP 2
Clean the pipe joint thoroughly on the back of the bell, on the bell face, and
on the spigot where the gasket will sit. Be sure to remove any scale, dirt, or
debris that could affect the gasket seal.
STEP 3
Inspect the joint. For caulked joint installations, caulking should be flush
with the bell face as far as practical. Caulking should not extend beyond bell
face. If recessed more than 1/8″, it should be faced up with a suitable
material. Keep excess material off the spigot and bell face.
STEP 4
For 2”-12” sizes, wrap the gasket around the pipe with a beveled side facing
away from the bell face and connect ends. The gasket is provided with a Kee-
Lok™ extension piece which is only to be used on larger diameter Class C-D
pipe. (See Figure 1). For 14” size, wrap gasket around pipe with beveled side
facing away from bell face. Carefully trim any extra gasket length with a
sharp knife, being sure to maintain the bias cut angle. The gasket can be held
in place by stapling the two ends together using a common office stapler.
STEP 5
For 2”-12” sizes, assemble the Spigot Ring and Bell Ring onto the pipe by
interlocking the flange halves. (See Figure 2) For 14” size, connect flange
halves by installing cap screws in the side flanges. Tighten screws.
STEP 6
Install bolts and nuts hand tight being sure that all components are in
alignment. Nuts should be located on the spigot end. (See Figure 3)
STEP 7
Tighten nuts progressively and uniformly to the recommended torque value
below.
- NUT SIZE
- 5/8”
- TORQUE VALUE
- 60-70 FT. LBS.
Use of a calibrated torque wrench is recommended!
STEP 8
Check for leakage and recheck bolts for proper torque prior to backfilling. If
possible, nuts should be checked for tightness 12-24 hours after initial
tightening.
See the Reverse Side for a Detailed Cut-Away View and Warnings
Warning
THIS PRODUCT DOES NOT RESTRAIN PIPE MOVEMENT. Proper anchoring is required
to prevent pipe pull-out. Failure to anchor or improper anchoring can result
in dangerous pipe content escape, property damage, serious injury, and/or
death. Read the product installation instructions prior to installing this
product.
Bell Joint Leak Clamp 16” – 36” Sizes
STEP 1
Inspect the shipment received to ensure no damage has occurred during transit
or storage and that no hardware is missing. Ensure the received bell joint
leak clamp is the correct size for the installation prior to beginning.
STEP 2
Clean pipe joint thoroughly on the back of bell, on the bell face, and on the
spigot where the gasket will sit. Be sure to remove any scale, dirt, or debris
that could affect the gasket seal.
STEP 3
Inspect the joint. For caulked joint installations, caulking should be flush
with bell face as far as practical. Caulking should not extend beyond the bell
face. If recessed more than 1/8″, it should be faced up with a suitable
material. Keep excess material off the spigot and bell fa ce.
STEP 4
For 16”-24” sizes, the gaskets have a Kee-Lok™ feature allowing the gasket to
be adjusted to fit larger diameter Class C-D pipe. Wrap the gasket around the
spigo t pipe and if the ends of the gasket can be snapped together without the
Kee-Lok extension piece, the extension piece should be discarded. If the
gasket does not reach around the pipe without the Kee-Lok extension piece, it
should be used to extend the gasket around the pipe. (Figure 1) For 30” and
36” sizes, the gaskets are bias cut and partially cut at predetermined lengths
to facilitate segment removal. Wrap the gasket around the spigot pipe and
determine the correct gasket length. Remove any unneeded segment(s) with a
sharp knife being careful to maintain the correct bias cut.
Note: A gasket long enough so that the ends easily contact is much better
than a short gasket that requires stretching.
Note: The pipe can also be measured with a PI-tape to determine whether
or not the Kee-Lok extension piece is needed. See chart on the reverse side.
STEP 5
Lubricate the pipe surface and gasket(s) using a soap and water solution
(anti-freeze may be required). All lubricant solutions should meet the
requirements of the water/gas and pipe supplier. Place the gasket around the
pipe with the large vertical flat surface against the bell face. The 30” and
36” gasket should be placed around the pipe with the
“BELL FACE” mark against the bell face. (Figure 2)
STEP 6
Assemble the spigot ring adjacent to the gasket. The front side with the
angular inner surface should be facing the gasket. The connecting links should
be put on the lugs engaging the notches on the ring segments to form the
smallest circle that will fit around the pipe. It may be necessary to drive
the connector link on with a hammer to obtain a secure connection between link
and spigot ring. Care should be taken not to damage the coating. (Figure 3)
Note: The cast ring segments that make up the bell ring and spigot ring are identical and interchangeable. Each segment has two notches on one end and a single notch on the opposite end that mate with lugs in the cast connector links to allow the rings to be assembled at different positions to accommodate either Class A-D pit cast or centrifugally cast iron pipe.
STEP 7
When the connector link lugs are engaged with the second ring segment notch,
the ring segment ends will be close enough together to provide a continuous
compression surface against the gasket. (Figure 4) When the connector link
lugs are engaged with the first ring segment notch, there will be a gap
approximately 5/8” wide between the ends of the ring segments. A cast Range
Spacer should be inserted in this gap with the angular surface on the ring
segments to provide a continuous compression surface against the gasket.
STEP 8
Repeat steps 6 through 7 to install the Bell Ring on the backside of the bell.
Be sure the cast ring segments’ angular surface is facing the bell.
STEP 9
Install bolts and nuts hand tight being sure that all components are in
alignment. Nuts should be located on spigot end. Tighten nuts progress- ively
and uniformly to recommended torque value to the right. (Figure 5)
STEP 10
Check for leakage and recheck bolts for proper torque prior to backfilling. If
possible, nuts should be checked for tightness 12-24 hours after initial
tightening.
- NUT SIZE
- 5/8”
- TORQUE VALUE
- 60-70 FT. LBS.
Use of a calibrated torque wrench is recommended!
See Reverse Side for Detailed Cut-Away View and Warnings
Kee-Lok Guide
Clamp Catalog Number| Class A & B Cast Iron Pipe
O.D. (in)
| Class C & D Cast Iron Pipe O.D.
DISCARD| USE
274-1740-000| 17.40| 17.80
274-1950-000| 19.50| 19.92
274-2160-000| 21.60| 22.06
274-2580-000| 25.80| 26.32
274-3174-000| 31.74| 32.74
274-3796-000| 37.94| 38.70**
- Available with bias cut gaskets only
- Class “D” not available in 36” size
WARMING
THIS PRODUCT DOES NOT RESTRAIN PIPE MOVEMENT. Proper anchoring is required
to prevent pipe pull-out. Failure to anchor or improper anchoring can result
in dangerous pipe content escape, property damage, serious injury, and/or
death. Read the product installation instructions prior to installing this
product.
Fabricated Model Bell Joint Leak Clamp with Plate Flanges
STEP 1
Inspect the shipment received to ensure no damage has occurred during transit
or storage and that no hardware is missing. Ensure the received bell joint
leak clamp is the correct size for the installation prior to beginning.
Note: Prior to disassembly, note all orientation marks on flanges and how
flanges halves are assembled for reassembly.
STEP 2
Clean pipe joint thoroughly on the back of the bell, on the bell face, and on
the spigot where the gasket will sit. Be sure to remove any scale, dirt, or
debris that could affect the gasket seal.
STEP 3
Inspect the joint. For caulked joint installations, caulking should be flush
with the bell face as far as practical. Caulking should not extend beyond the
bell face. If recessed more than 1/8″, it should be faced up with a suitable
material. Keep excess material off the spigot and bell face.
STEP 4
Wrap the gasket around the pipe with the beveled side facing away from the
bell face as shown below.
STEP 5
Carefully trim any extra gasket length with a sharp knife, being sure to
maintain the bias cut angle. The gasket can be held in place by stapling the
two ends together using a common office stapler.
STEP 6
Assemble flange halves opposite of Step 1 disassembly on each side of the bell
with the beveled gasket-sealing surface facing the bell as shown below. Be
sure to align any orientation marks as noted in Step 1.
STEP 7
Install studs and nuts hand tight being sure that all components are in
alignment. Tighten nuts progressively and uniformly to suppress the leak.
Note: DO NOT exceed maximum torque values to the right.
| NUT SIZE | MAX TORQUE VALUE |
|---|---|
| 5/8” | 70 FT. LBS. |
| 3/4” | 90 FT. LBS. |
| 1” | 120 FT. LBS. |
WARRANTY
Smith-Blair, Inc. warrants its products to be free of defects in materials and workmanship for a period of one (1) year from the date of shipment by Smith- Blair, Inc. (the “Warranty Period”). Dated proof of purchase, such as a bill of sale, is required to establish warranty eligibility. If a product fails to perform due to a defect in materials or workmanship during the Warranty Period, Smith-Blair, Inc. will repair or, at Smith Blair, Inc.’s option, replace the product with the same or comparable item. In the event that the product cannot be repaired and a suitable replacement item is not available, Smith-Blair, Inc. will refund the original purchase price shown on the proof of purchase. In all cases, the customer is responsible for returning the allegedly defective product to the factory or warehouse designated by Smith- Blair, Inc.
CORROSION & PRODUCT SELECTION NOTICE
Metal products are subject to corrosion, particularly when used outdoors
and/or underground. A large number of factors and local conditions affect the
rate of corrosion. Consult a local corrosion expert to determine the life
expectancy of this product when used with your pipeline content, soil, and
environment. Also, consult your system designer to determine the suitability
of this product in your piping system. Failure to determine the suitability of
this product in your application, soil, and/or environment can result in
premature product failure. Smith-Blair will provide additional information
about this product’s material specifications at your request. You may also
obtain product information at www.smith-blair.com.