SharkBite U4008LF Push-Fit Pol...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$10.12
SharkBite U4008LF Push-Fit Polybutylene Conversion Coupling, Lead-Free

SharkBite U4008LF Push-Fit Polybutylene Conversion Coupling, Lead-Free

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Model: U4008LF

In Stock (leaves warehouse same day if ordered before 3pm ET)

$10.12
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SharkBite U4008LF Push-Fit Polybutylene Conversion Coupling, Lead-Free

The SharkBite U4008LF is a lead-free push-fit conversion coupling designed to transition polybutylene pipe to copper, CPVC or PEX tubing without soldering, clamps, unions or glue. Available in 1/2" and 3/4" sizes to match common polybutylene pipe diameters, this coupling is built on the SharkBite push-fit connection system and is certified to 200 psi and 200 degrees F. It is rated for underground applications as well as use as a manufactured joint without access panels, giving plumbers and contractors a fast, reliable way to repair or upgrade aging polybutylene water distribution systems in place, cutting rough-in time compared to traditional soldered or glued transitions.

Key Features

  • Trade Size: Available in 1/2" and 3/4" sizes for common polybutylene water distribution lines.
  • Polybutylene Conversion: Transitions polybutylene pipe to copper, CPVC or PEX with a single push-fit connection.
  • Push-Fit Connection: No soldering, clamps, unions or glue required, allowing a quick, tool-free installation in tight rough-in spaces.
  • Pressure and Temperature Rating: Certified to 200 psi and 200 degrees F for standard water distribution service.
  • Multi-Material Compatibility: Fits copper, CTS CPVC and PEX tubing in any combination for maximum flexibility on the job.
  • Underground and Concealed Use: Certified for underground applications and as a manufactured joint without access panels, ideal for slab and behind-the-wall installations.
  • Lead-Free Construction: Manufactured to lead-free (LF) specifications for potable water applications.

Certifications & Compliance

  • Meets UPC, IPC and Canadian plumbing code requirements
  • Certified for underground applications and as a manufactured joint without access panels
  • Lead-Free (LF)

Technical Specifications

  • Size Range: 1/2", 3/4"
  • Pressure Rating: 200 psi
  • Temperature Rating: 200 degrees F
  • Compatible Materials: Copper, CPVC, PEX
  • Connection Type: Push-Fit
  • Packaging: 6 ea

Typical Applications

  • Polybutylene Pipe Repair and Replacement
  • Residential and Commercial Rough-In Plumbing
  • Underground Water Distribution Repairs
  • Concealed and Behind-the-Wall Connections
  • Renovation and Retrofit Plumbing Projects

Why SharkBite?

SharkBite's push-fit connection system gives plumbers a code-compliant, lead-free way to convert polybutylene pipe to modern copper, CPVC or PEX tubing without soldering, clamps or glue. With a 200 psi / 200 degrees F rating and certification for underground and concealed manufactured joints, the U4008LF coupling delivers a dependable, tool-free repair solution built for professional rough-in work across both 1/2" and 3/4" sizes.

Manufacturer Resources

Product Specs

list_batch:
SHK-20260923
Product Type:
Conversion Coupling
Connection Type:
Push-Fit
Department:
Plumbing
Product Subgroup:
Pipe and Tubing
Product Group:
Fitting

SharkBite U4008LF – Frequently Asked Questions

1) Will the SharkBite U4008LF coupling connect polybutylene pipe directly to copper, CPVC or PEX?
That is exactly what the U4008LF is built for. One side takes polybutylene, the other accepts copper, CTS CPVC or PEX, so you can transition in a single push-fit connection with no solder, glue, clamps or unions. Any combination of those three on the outlet side works, which is why it is the usual choice for repairing aging poly water distribution lines in place.
2) Can a SharkBite poly conversion coupling be buried underground or hidden behind a wall without an access panel?
Yes. The U4008LF conversion coupling is certified for underground applications and as a manufactured joint without access panels, so it can go in a slab, in a trench, or behind finished wall with no inspection door. That is the main reason it gets used on slab leak and concealed poly repairs.
3) Is the SharkBite U4008LF coupling approved for potable water and plumbing code?
It is manufactured to lead-free (LF) specifications for potable water and meets UPC, IPC and Canadian plumbing code requirements. For a facility or multi-family buyer standardizing on lead-free potable components, that covers the usual inspector questions on a poly transition.
4) Is a standard SharkBite coupling the same as the U4008LF poly conversion coupling?
No, and this is where people order wrong. A standard SharkBite coupling joins copper, CPVC and PEX. Polybutylene has a different outside diameter, so it needs the conversion version: the U4008LF in 1/2 inch or the U4016LFA in 3/4 inch. If one end of your repair is poly, you need the conversion coupling, not the standard one.
5) What sizes does the SharkBite polybutylene conversion coupling come in?
Two trade sizes, 1/2 inch and 3/4 inch, matching the common polybutylene water distribution diameters. The 1/2 inch is part number U4008LF and the 3/4 inch is U4016LFA.
6) What pressure and temperature can this polybutylene push-fit coupling handle?
200 psi and 200 degrees F, which covers standard domestic hot and cold water distribution in residential and commercial rough-in. It is not a specialty high-temperature fitting beyond that rating.
7) Do I need special tools to install a SharkBite polybutylene conversion coupling?
No soldering, no glue, no clamps or unions. The push-fit connection means you cut the pipe, deburr, mark your insertion depth and push the fitting home, which is what makes it workable in tight rough-in and crawl spaces where a torch is a problem.
8) How many SharkBite U4008LF couplings come in a pack?
They ship 6 each per pack, which suits a property manager or plumbing contractor working through a building full of polybutylene risers rather than doing a one-off repair.
How fast can I get the SharkBite U4008LF delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the SharkBite U4008LF come with a warranty?
Absolutely. The SharkBite U4008LF is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the SharkBite U4008LF?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the SharkBite U4008LF from ZenSupply?
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