Smith-Blair · Tapped Repair Clamp
Style 239 Tapped Full Circle Repair Clamp
Double Band · Ductile Iron Lugs · 304 Stainless Bolts · 4-12 in pipe
175 PSI Max Working Pressure
-20°F to +180°F Temperature
Nitrile (Buna-N) Gasket
304 Stainless Band and Outlet
Epoxy-Coated Ductile Iron Lugs
304 Stainless Bolts, Coated Nuts
NSF/ANSI 61 and 372
3/4 to 2 in NPT and CC Taps
4.44-14.00 in Pipe OD
19-50 lb Weight
Description
The Smith-Blair Style 239 is a double-band Full Circle repair clamp with a stainless outlet welded to an 18-8 Type 304 stainless band. It repairs damaged pipe at broken or torn-out service connections and branch lines, and serves as a new outlet on pipe drilled before installation. Removable epoxy-coated ductile iron lugs let it go on in tight spaces; every lug is closed except at the joint opened for installation.
Application: leaks at service outlets, broken or torn-out service connections and branch lines, and new outlets on pre-drilled pipe.
Key Features
- Pressure rating up to 175 PSI, with full 360° support and reinforcement
- Double band, up to 0.80 in of OD range per clamp
- NPT and CC (AWWA) outlets from 3/4 to 2 in
- Drop-in bolts at the joint; one longer starter bolt on clamps to 4.5 in OD
- Certified to NSF/ANSI 61 and NSF/ANSI 372
What Ships and What It Needs to Run
Included: the clamp with its 360° Nitrile gasket and bonded bridge plate, lugs, and 304 stainless bolts with fluoropolymer-coated nuts; clamps to 4.50 in OD add a long starter bolt and tall nut.
Pipe drilled before installation. Install the clamp over a pipe that is already drilled, or over the leaking service outlet it repairs. Smith-Blair does not allow tapping through the clamp.
Belleville spring washers on HDPE pipe, ordered separately. Smith-Blair p/n 150115-000 washers are required on HDPE pipe, in the sizes and DRs listed in Smith-Blair’s HDPE Application Guide (not for gas service). Ask us to include them with the clamp.
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 175 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 |
18-8 Type 304 stainless steel |
| Lugs |
Ductile iron (ASTM A536 Gr 80-55-06) with Flexi-Coat fusion-bonded epoxy finish |
| Outlet |
Type 304 stainless steel, welded into a drawn opening in the band |
| Gasket |
Nitrile (Buna-N), full 360° gridded face with tapered ends |
| Bridge plate |
Type 304 stainless steel, quarter-hard, recessed flush and bonded into the gasket |
| Bolts and nuts |
Type 304 stainless steel bolts with fluoropolymer-coated nuts to prevent galling |
| Starter bolt |
5/8 x 6-7/8 in long bolt with a tall nut, on clamps to 4.50 in OD |
| Temperature range |
-20°F to +180°F |
Materials subject to change by the manufacturer. Options built to order: Type 316 stainless band and hardware, Viton or EPDM gaskets, spring washers for HDPE, offset gaskets for longer cracks, conductivity feature.
Pipe Applications
Cast iron, ductile iron, asbestos cement, steel, PVC, HDPE (with spring washers) and most other pipe types.
Sizes and Outlet Taps
| Nominal |
Pipe OD range |
Widths |
Outlet taps |
| 4 in |
4.44-5.24 in |
7.5, 10, 12.5, 15 in |
3/4, 1, 1-1/4, 1-1/2, 2 in NPT; 3/4, 1, 2 in CC |
| 6 in |
6.62-7.42 in
6.84-7.64 in |
7.5, 10, 12.5, 15 in |
3/4, 1, 1-1/4, 1-1/2, 2 in NPT; 3/4, 1, 2 in CC |
| 8 in |
8.62-9.42 in
8.99-9.79 in |
7.5, 10, 12.5, 15 in |
3/4, 1, 1-1/4, 1-1/2, 2 in NPT; 3/4, 1, 2 in CC |
| 10 in |
10.75-11.55 in
11.10-11.90 in |
10, 12.5, 15 in |
3/4, 1, 1-1/4, 1-1/2, 2 in NPT; 3/4, 1, 2 in CC |
| 12 in |
12.75-13.55 in
13.20-14.00 in |
10, 12.5, 15 in |
3/4, 1, 1-1/4, 1-1/2, 2 in NPT; 3/4, 1, 2 in CC |
Select the pipe OD range, the outlet tap and the band width above; the part number shows with the width. CC = AWWA corporation-stop thread.
Bolt Numbers
| Band width |
Bolts |
Bolt size |
| 7.5 in |
6 |
Drop-in lug 5/8 x 6 in; closed lug 5/8 x 6-7/8 in |
| 10 in |
8 |
Drop-in lug 5/8 x 6 in; closed lug 5/8 x 6-7/8 in |
| 12.5 in |
10 |
Drop-in lug 5/8 x 6 in; closed lug 5/8 x 6-7/8 in |
| 15 in |
12 |
Drop-in lug 5/8 x 6 in; closed lug 5/8 x 6-7/8 in |
Installation Notes
- Clean the pipe where the clamp will sit, removing scale, dirt and debris that could spoil the gasket seal.
- Lubricate the pipe and gasket with a soap-and-water solution that meets the water and pipe supplier’s requirements.
- Where the pipe ends gap 1 in or more, bridge the gap with a short section of pipe or a thin strip of sheet metal to support the gasket.
- Where 40% or more of the circumference is broken away, cover the opening with sheet metal and use a clamp that extends 3 in past it on both sides.
- Tighten from the center nut outward, keep the clamp centered on the break, and finish with a calibrated torque wrench to the torque in the instructions.
- Anchor the pipe: the clamp seals 360° around it, and Smith-Blair requires proper anchoring to restrain pipe movement and prevent pull-out.
From Smith-Blair Installation Instructions TI-002 (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.
Wider clamps (up to 30 in), odd pipe ODs, Type 316 stainless, Viton or EPDM gaskets and other tap sizes are built to order — email sales@watermainsupply.com with the pipe OD, material and tap.
