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1/2" x 1/2" SharkBite Polybutylene Conversion Coupling (Lead Free)
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U4008LF has been discontinued
Discontinued February 9, 2026
This product was discontinued by the manufacturer.
MANUALS (4)
This item replaces: 55453, 10155453, U4008
Direct Replacement:
1/2" x 1/2" SharkBite Max Polybutylene Conversion Coupling (Lead Free), UR4008A
Product Highlights
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1/2" x 1/2"
Brass
PEX, OD Controlled Copper, CPVC
Push Fit
NSF Standards Met
200°F Max Temp
Description
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Note: Underground burial of SharkBite brass fittings requires that the fitting be wrapped using silicone wrap (25406A).
Designed to simplify pipe installation. Instant push-fit connection for increased ease-of-use- no soldering required. Fittings certified to 200 PSI and 200 degrees F (93 degrees C). Fits OD controlled copper, CPVC, or PEX pipe. Design certified and agency listed. Compact, corrosion resistant, robust DZR brass body.
The gray-colored collar is intended for use on Polybutylene pipe while the tan-colored collar is intended for OD controlled copper, CPVC, or PEX pipe.
Designed to simplify pipe installation. Instant push-fit connection for increased ease-of-use- no soldering required. Fittings certified to 200 PSI and 200 degrees F (93 degrees C). Fits OD controlled copper, CPVC, or PEX pipe. Design certified and agency listed. Compact, corrosion resistant, robust DZR brass body.
The gray-colored collar is intended for use on Polybutylene pipe while the tan-colored collar is intended for OD controlled copper, CPVC, or PEX pipe.
Specs
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| Application: | Plumbing Heating |
|---|---|
| Size: | 1/2" x 1/2" |
| PEX Size: | 1/2" |
| Material: | Brass |
| Fitting System Compatibility: | Push Fit |
| Tubing Compatibility: | PEX OD Controlled Copper CPVC |
| Standards Met: | NSF |
| Max Temp (F): | 200°F |
| Max Pressure (PSI): | 200 |
| Warranty: | 25 Year |
| Lead Free: | Yes |
| Insertion Depth: | 15/16" |
Questions?
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Call or text 888-757-4774
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Product Reviews
5 out of 17 reviews
100% would recommend this product
5 star
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Showing 1-10 of 17 reviews
Yes I would buy this product again
This connection worked great in converting my old polybutylene gray water lines to PEX. I used these right underneath before they go up through the floor. By placing them there they are visible and can be seen if something occurs down the road.
ka
Virginia
4 years ago
Verified Buyer
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Worked perfectly
I have polybutylene (pb) tubing and needed this product to transition to PEX tubing. The sharkbite press fit connector worked perfectly.
Even better was how quickly Supplyhouse dispatched my order. I will be ordering again.
ERICSPEEd
Northern Minnesota
5 years ago
Verified Buyer
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right product for the job
found the "hard to find" parts and service was excellent.
Judy
Tennessee
7 years ago
Verified Buyer
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The perfect choice for quick conversions!
Just replaced a bathroom sink...had to change from gray polybutylene to pex. Worked well...really fast, really easy, no leaks!
RLW
Denver, CO
8 years ago
Verified Buyer
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SharkBite works!
Great product...quick and easy plumbing solution. If you make a mistake, you can re-adjust without fighting glue. Arrived quickly. Buy American!
Richard born in the USA a long time ago
Devver Colorado
9 years ago
Verified Buyer
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works great
great product
JIm
Lancaster Pa
9 years ago
Verified Buyer
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these work great saved me will buy again
have polybutylene pipeing,with out this sharkbite fitting would not have got new hot water tank installed.no leaks
rick the non plumber
merritt mi
11 years ago
Verified Buyer
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good product
They are what they are. Shark bite is a well know quality product.
gjw979
Jacksonville, Fl.
11 years ago
Verified Buyer
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buying more, worked perfectly,no leaks.
This is a top notch product. Worked as described, just push it on and your done. I will purchase more to transfer other old polybutylene to modern lines.
Bowman
East Wenatchee,WA
12 years ago
Verified Buyer
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Good Connection To Old Polybutylene Pipe
I used these adapters and short PEX pieces to replace failing PB (Quest) connections to a zone valve distribution system in our 4-Plex. I chipped out the concrete where the PB tubing entered the concrete, went back to good PB tubing, and used the adapters to connect to short, makeup, pieces of PEX, and then used SharkBite shutoff valves to connect to the copper risers and zone valves. Job went smoothly ... hope it lasts.
NorthPilot
Healy, AK
12 years ago
Verified Buyer
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Product Q&A
1 Question1 Question
Q: The sharkbite 3/4 x 3/4 has different colors on each side. I am connecting a blue polybutylene pipe to a CPVC pipe. Which side does the blue polybutylene pipe go into , and which side does the white CPVC pipe go into ? Or does it matter ? Thanks, Andy
Asked by Andy 14 years ago
Add your answer
Verified Reply- PexSupply StaffThe blue side is designed to work with the polybutylene, which has a slightly different diameter.
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