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Description
dresser coupling Dresser Style 138 Coupling | Cast/Ductile Iron 3 in - (3.74 - 4.02) / .188X5Description Dresser Bolted Coupling Style 138 Coupling Cast & Ductile Iron Pipe Wide range bolted sleeve coupling for plain end cast iron and ductile iron pipe. One nominal size covers the full OD spread from legacy cast iron through modern DIP. Sizes 3 in 12 in 250 PSI Working Pressure Fusion Bonded Epoxy ID OD NSF 61 & 372 Certified AWWA C111 Bolting Overview The Dresser Style 138 is a wide range bolted sleeve coupling for joining plain end cast
Description
Dresser Bolted Coupling
Style 138 Coupling
Cast & Ductile Iron Pipe
Wide-range bolted sleeve coupling for plain-end cast iron and ductile iron pipe. One nominal size covers the full OD spread from legacy cast iron through modern DIP.
Sizes 3 in – 12 in
250 PSI Working Pressure
Fusion-Bonded Epoxy ID/OD
NSF 61 & 372 Certified
AWWA C111 Bolting
Overview
The Dresser Style 138 is a wide-range bolted sleeve coupling for joining plain-end cast iron (CIP) and ductile iron pipe (DIP) in nominal sizes 3 in through 12 in. Its key advantage is a single coupling per nominal size that covers the full OD range — whether the line in the ground is legacy cast iron or current-production ductile iron, one part number fits the joint.
Style 138 couplings provide flexible, leakproof connections that absorb vibration, accommodate pipe movement, and require no threading, beveling, or precise pipe alignment. Installation is wrench-only.
Key Features
Wide OD Coverage
One coupling per nominal size fits the full OD spread of cast iron and ductile iron pipe — from older CIP to current DIP production.
CIP & DIP Application
Engineered specifically for plain-end cast and ductile iron pipe in waterworks and utility service.
Tool-Only Installation
No threading, beveling, or pipe alignment required. A wrench is all that’s needed for a leakproof joint.
Flexible Joint
Absorbs vibration and accommodates minor angular deflection and pipe movement at the joint.
Materials of Construction
Followers
AISI C1012 or ASME SA36
Steel followers indicated by part number suffix
Middle Ring
ASTM A513 / A635 / SA675 Gr.60
Steel sleeve body
Bolts & Nuts
AWWA C111 / ANSI A21.11
Black E-coated steel as standard
Gasket
Grade 27 BUNA-S
Standard supply
Standard Coating
Fusion-Bonded Epoxy ID/OD
Factory-applied
Optional Coating
Dresser RED-D Shopcoat
Available on request
Sizes & Working Pressure
| Nominal Size | Outside Diameter Range (in) | Working Pressure (PSI) |
|---|---|---|
| 3 in | 3.74 – 4.02 | 250 |
| 4 in | 4.74 – 5.06 | 250 |
| 6 in | 6.84 – 7.16 | 250 |
| 8 in | 8.99 – 9.36 | 250 |
| 10 in | 11.04 – 11.46 | 250 |
| 12 in | 13.14 – 13.56 | 250 |
Consult Inside Sales For
Standard supply is Grade 27 BUNA-S gasket with fusion-bonded epoxy ID/OD coating. Contact our team for products requiring American Iron & Steel (AIS) certification, alternate gasket materials, or alternate coatings.
Ready to Order?
Confirm pipe OD and any special requirements before placing your order.
Submittal
Style 38/138/40 CIP/DIP Submittal
Catalog
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 1
Received Burst Water Flosser, that never worked. Found out too late.
Color: Rose Gold
Ordered this item on recommendation of my dental hygenist, then needed a tooth pulled and was starting the dental implant process so was told I couldn't use it for awhile. The process took another 1 & 1/2 years. After the final crown I was told to use a waterpik. I went to use this, was unable to charge it, may have been missing a part, tried a matching plug. It wouldn't charge or turn on. Too late to return, so I'm out a good chunk of money in exchange for junk, something that never worked. I wonder if someone had returned a defective one as it had a dark finger smudge where it turns on, which I couldn't wash off. The tips were in a new package. Very disappointed.
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Reviewed in the United States on May 16, 2026
★★★★★ 5
Perfect in every way!
Color: Rose Gold
This flosser is perfection. It starts with the packaging and presentation. The flosser itself is beautiful (I got the rose gold), a nice sleek design that looks great on the bathroom counter. It is well constructed; I have tried the cheaper versions of these flossers and they all have a hose that hangs in the water reservoir that eventually gets clogged and stops working. Save your money and go for this one. Another great feature is how LONG it holds the charge. I am one month in and it is still operating on the initial charge at full strength. This makes it ideal for travel, along with the adorable travel bag included in the package. I also appreciate not having the wires cluttering up my counter space, which was the case with the cheaper models that have to be charged after each use. So far the company has been great to deal with - it comes with a 1 year warranty, which is easy to sign up for on their website. After the one year, you can subscribe to automatic tip replacements (each 6 months) and that will extend the warranty.
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Reviewed in the United States on March 21, 2023
★★★★★ 5
Be sure to still floss
Color: Rose Gold
This is a great product. However, make sure you still floss. I used the water flosser only between my dental cleanings and I ended up with a lot of tarter that had to be scraped off. I was told that I should continue using string floss as plaque is sticky and a water flosser can leave some behind. The hygienist compared it to expecting rain clean your car well. I still give it 5 stars as it remove particles from between my teeth that floss leaves behind. Also, my teeth were nearly perfectly clean during my last visit to the dentist. There was virtually no tarter as I followed her recommendation to both string and water floss.
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Reviewed in the United States on January 5, 2025
★★★★★ 3
They leak and the don’t last, but they’re sleek.
Color: Black
I love the shape of this flosser, that aspect is perfect. That’s the reason I’ve bought (3) over the years. But unfortunately, I’m done. Looking for a new gig. Every single one has leaked water. I just dealt with it. But the year and a half life they last is the deal breaker. Buy the insurance. You will use it. They simply do not last forever.
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Reviewed in the United States on March 22, 2026
★★★★★ 5
Perfect for home or traveling
Color: White
This is my second water floss, product, and by far the best. Yes, the water reservoir is not as large as some of the others, but it is perfectly adequate. Easy to use, has three different settings, that are easy to change. Definitely enough power to get all the food out from between my teeth. I use this when I had braces, and I use it now with my retainer, so that my teeth are always clean. I like the design, and the fact that it doesn’t have a tube to suck the water. The charge lasts for an extended period of time and recharging is very quick. I can go two to three weeks, and it’s still got a good charge to it. Highly recommend.
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Reviewed in the United States on July 23, 2023