Dresser · Collar Leak Clamp
Style 4 Collar Leak Clamp
Split clamp that stops leaks through the threads of screw collars on steel pipe, 2 through 4 in.
1,000 PSI Max Working Pressure
Grade 27 Buna-S Split Gaskets
Malleable iron split followers
AWWA C111 Bolts
RED-D Coating, Epoxy Optional
Stops Screw Collar Leaks
2.38-4.50 in Pipe OD
8-11 lb Weight
Overview
Dresser Style 4 and 41 clamps stop leaks through the threads of screw collars (threaded couplings) quickly and inexpensively. The repair is permanent and normally made without interrupting service or dismantling the line. Style 4 uses malleable split follower rings with interlocking ends, two resilient split gaskets and bolts.
Application: Leaking screw collars on threaded steel lines.
- Split design installs around the collar in place
- Permanent repair
- Replacement gaskets on the Style 4 and 41 gasket listing
What Ships and What It Needs to Run
Included: two split follower rings, two split gaskets, bolts and nuts.
Clamped over: the existing screw collar, which stays in the line.
Genuine Dresser equipment, factory-new in original packaging — sold and supported by Watermain Supply, an independent industrial supplier.
12-Month Dresser Warranty
Covered for 12 months from the date of purchase under Dresser’s published warranty terms.
Working Pressure
Dresser rates the Style 4 collar leak clamp to 1,000 PSI.
Source: Dresser Gas Product Selection Guide (NGS-DPS-015). The rating on the product label is the actual rating of each part.
Materials Specifications
| Followers |
Malleable iron split followers with interlocking ends |
| Bolts and nuts |
Alloy to AWWA C111 / ANSI A21.11 |
| Gaskets |
Grade 27 Buna-S |
| Coating |
RED-D; epoxy optional |
Source: Dresser Water Repair Products catalog.
Sizes
| Nominal |
Pipe OD (in) |
Gasket section |
Bolts |
| 2 in |
2.375 |
9/32 x 5/8 in |
4 - 5/8 x 6-1/2 in |
| 3 in |
3.500 |
11/32 x 3/4 in |
4 - 5/8 x 7-1/2 in |
| 4 in |
4.500 |
23/64 x 3/4 in |
4 - 5/8 x 7-1/2 in |
Dresser Water Repair Products catalog.
Before You Order. Measure the collar OD as well as the pipe OD. Non-stock Dresser parts are not returnable without Dresser’s authorization, and ship time is confirmed when you order. Custom builds (other sizes, widths, gaskets or materials) are available: email
sales@watermainsupply.com with the pipe OD, material and line content.
