Smith-Blair · Bell Joint Leak Clamp
Style 274 Bell Joint Leak Clamp
150 PSI Max Working Pressure
-20°F to +180°F Temperature
Nitrile (Buna-N) Gasket
Epoxy-Coated Ductile Iron Rings
Low-Alloy Steel Bolts
4.80-38.70 in Pipe OD
19-301 lb Weight
Description
The Smith-Blair Style 274 bell joint leak clamp seals, and prevents, leaks on cast iron bell-and-spigot caulked or rubber-ring joints. It fits virtually all classes and brands of cast and ductile iron pipe within the same nominal size, and installs without interrupting the flow of the pipeline.
Application: cast iron and ductile iron bell-and-spigot caulked or rubber-ring joints; C900 and C905 PVC through 24 in (DR 18 minimum) with longer bolts.
Key Features
- Working pressure 150 PSI (water)
- Fits caulked or rubber-ring joints on cast and ductile iron
- Kee-Lok gasket ends join without field cutting (not on 14, 30 or 36 in)
- Front and back pieces interchangeable; installs without shutting down the line
What Ships and What It Needs to Run
Included: the bell and spigot rings, Nitrile gasket, bolts and nuts.
Longer bolts for C900 and C905 PVC: this listing is the longer-bolt build for long-bell joints and C900/C905 PVC (DR 18 minimum).
Genuine Smith-Blair equipment, factory-new in original packaging — sold and supported by Watermain Supply, an independent industrial supplier.
12-Month Smith-Blair Warranty
Smith-Blair warrants its products to be free of defects in materials and workmanship for one year from the date of shipment by Smith-Blair. Dated proof of purchase, such as a bill of sale, is required to establish eligibility. Smith-Blair will repair or, at its option, replace a defective product; the product is returned to the factory or warehouse Smith-Blair designates.
Working Pressure
Up to 150 PSI (water). Smith-Blair rates the allowable working pressure of a repair clamp to fall as pipe diameter rises; for a particular installation it is set by pipe size and type, the type and extent of the damage, service conditions and installation workmanship.
Materials Specifications
| Bell and spigot rings |
Ductile iron per ASTM A536; carbon steel (ASTM A36) on 14 in |
| Gasket |
Nitrile (Buna-N), compounded to resist oil, natural gas, acids, alkalis, most (aliphatic) hydrocarbons, water and other chemicals |
| Bolts and nuts |
High-strength low-alloy steel with heavy semi-finished hex nuts (ANSI A21.11); 2 in clamps have electro-galvanized steel studs |
| Finish |
Flexi-Coat fusion-bonded epoxy |
| Temperature range |
-20°F to +180°F |
Materials subject to change by the manufacturer.
Pipe Applications
Ductile iron and cast iron. C900 and C905 PVC (DR 18 minimum) through 24 in with longer bolts; 2, 3, 4, 30 and 36 in are not recommended for PVC.
Sizes
13 pipe sizes from 4.80 to 38.70 in OD — open for the full list
| Pipe size and OD |
Part No. |
| 4 in - 4.80-5.00 in |
274-40000480-500 |
| 6 in - 6.90-7.10 in |
274-40000690-500 |
| 8 in - 9.05-9.30 in |
274-30000905-500 |
| 10 in - 11.10-11.40 in |
274-30001110-500 |
| 12 in - 13.20-13.50 in |
274-30001320-500 |
| 14 in - 15.30 in |
274-30001530-500 |
| 14 in - 15.65 in |
274-30001565-500 |
| 16 in - 17.40-17.80 in |
274-40001740-000 |
| 18 in - 19.50-19.92 in |
274-40001950-000 |
| 20 in - 21.60-22.06 in |
274-40002160-000 |
| 24 in - 25.80-26.32 in |
274-40002580-000 |
| 30 in - 31.74-32.74 in |
274-40003174-000 |
| 36 in - 37.96-38.70 in |
274-40003796-000 |
Choose the pipe OD in the first row above; the part number shows in the second row.
Before You OrderAll Smith-Blair products are Made to Order and Non-Returnable.
Items typically shipped in 5 - 10 business days.
Anchor the pipe: the clamp seals around it, and Smith-Blair requires proper anchoring to restrain pipe movement and prevent pull-out.
Odd pipe ODs, other widths and other materials are built to order — email sales@watermainsupply.com with the pipe OD and material.
