Smith-Blair · Repair Clamp
Style 246 Pipe Repair Clamp
Multi-Band, Large Diameter
150 PSI Max Working Pressure
Nitrile (Buna-N) Gasket
304 Stainless Band
Epoxy-Coated Ductile Iron Lugs
304 Stainless Bolts, Coated Nuts
NSF/ANSI 61 and 372
10.00-30.00 in Pipe OD
12-45.6 lb Weight
Description
The Smith-Blair Style 246 multi-band pipe repair clamp repairs pin holes, punctures and splits in large-diameter rigid pipe. Each clamp is built to a specific pipe OD from 10 to 30 in, with an 18-8 Type 304 stainless band, a Nitrile gasket and epoxy-coated ductile iron lugs.
Application: steel and IPS-sized PVC.
Key Features
- Working pressure up to 150 PSI
- Built to a specific pipe OD, 10 through 30 in
- Widths 5 and 10 in
- Drop-in bolts and 360° coverage of the pipe surface
- Certified to NSF/ANSI 61 and NSF/ANSI 372
What Ships and What It Needs to Run
Included: the clamp with its Nitrile gasket, lugs, bolts and nuts, ready to install.
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. 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
| Band |
Type 304 stainless steel |
| Lugs |
Ductile iron (ASTM A536) with Flexi-Coat fusion-bonded epoxy finish |
| Gasket |
Nitrile (Buna-N), compounded to resist oil, natural gas, acids, alkalies, most (aliphatic) hydrocarbons, water and many chemicals |
| Bolts and nuts |
Type 304 stainless steel with fluoropolymer-coated nuts to prevent galling |
Materials subject to change by the manufacturer.
Sizes
13 pipe sizes from 10.00 to 30.00 in OD — open for the full list
| Pipe size and OD |
Widths |
| 10 in - 10.00 in |
5, 10 in |
| 10 in - 10.25 in |
5, 10 in |
| 10 in - 10.75 in |
5, 10 in |
| 12 in - 12.00 in |
5, 10 in |
| 12 in - 12.25 in |
5, 10 in |
| 12 in - 12.75 in |
5, 10 in |
| 14 in - 14.00 in |
5, 10 in |
| 16 in - 16.00 in |
5, 10 in |
| 18 in - 18.00 in |
5, 10 in |
| 20 in - 20.00 in |
5, 10 in |
| 22 in - 22.00 in |
5, 10 in |
| 24 in - 24.00 in |
5, 10 in |
| 30 in - 30.00 in |
5, 10 in |
Choose the pipe OD in the first row above; the part number shows in the second row.
Installation Notes
- Clean the pipe where the clamp will sit, removing scale, dirt and debris that could spoil the gasket seal.
- Mark the pipe both ways from the center of the damage, and lubricate pipe and gasket with a soap-and-water solution.
- Install with the leak centered under the gasket, using the reference marks to align the clamp axially, and engage the bolt head in the open lug.
- Tighten the nut to stop the leak, using a calibrated torque wrench and the torque in the instructions.
- Anchor the pipe: the clamp seals around it, and Smith-Blair requires proper anchoring to restrain pipe movement and prevent pull-out.
From Smith-Blair Installation Instructions TI-011 (Rev 08/26/21), in the Data Sheet tab.
Before You OrderAll Smith-Blair products are Made to Order and Non-Returnable.
Items typically shipped in 5 - 10 business days.
Odd pipe ODs, other widths and other materials are built to order — email sales@watermainsupply.com with the pipe OD and material.
