FLEXIBLE COUPLING HOSES is rated 4.2 out of 5 by 9.
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The SharkBite Flexible Coupling Hoses are used in residential and commercial applications to easily connect CTS pipe in any combination. The connectors are EPDM knitted with braided stainless steel. The hoses are available in 1/2″ and 3/4″, and are 18” in length. The SharkBite connection allows the installer to connect to Copper, PEX, CPVC and PE-RT tubing and eliminates the need for an additional transition fitting.


ASME A112.18.6-2009/CSA B125.6-200

NSF 372

SizesPart #
1/2" X 1/2", 18"
3/4" X 3/4", 18"


Rated 2 out of 5 by from Black stuff staining my tub I purchased this item after it was recommended by the plumbing associate at the store. While purchasing a replacement water heater. He told me of how great this product is and how it reduced his install times by 50%. And that this item has a 25yr. warranty.Three years later. I begin to find black flakes in my water. After doing a little research online. I've found numerous complaints of this item causing black flakes after a couple of years due to the inside of the hose deteriorating. I removed this item from my plumbing and sure enough. Black flakes were coming from the inside of this item.
Date published: 2016-06-09
Rated 5 out of 5 by from Needed emergancy water supply repair. This product just saved me from a serious chewing out by my wife. During the remodel of the spare bathroom the over aggressive use of a demolition tool managed to damage the main 3/4" supply line to both bathrooms. A quick trip to my local Home Depot and conversation with the staff there had me headed home with this flex connector. A couple of quick tube cuts, push the connectors into place and within an hour of the damage I had a no leak temporarily repair. The main bathroom was back in service before my wife was home from shopping. Permanent repairs will be done later as part of relocating the sink and shower later in the remodel. Thank you Home Depot!
Date published: 2015-09-20
Rated 1 out of 5 by from Quick Installation, but inside rubber deteriorates I bought this sharkbite braided flex connector 2-3 years ago and placed it on the hot water side of my water heater. I just recently started noticing black rubber flakes when I ran the hot water into my tub. After months of research and checking things out I found that this hose has rubber inside of it that deteriorates after several years. I had to replace it. If I had knowledge of this problem I never would have purchased this product. I used other sharbite products with no problems, but this one is a bust. Do not buy this item.
Date published: 2016-06-29
Rated 5 out of 5 by from great product Quick fix. Bought extra to keep on hand. Definitely recommend this user friendly product!
Date published: 2015-03-10
Rated 5 out of 5 by from This is a product every homeowner should know about, to avoid paying a huge emergency plumbing call. First and MOST important... This is NOT A PERMANENT FIX. The 18" hose is made of braided stainless and the ends made of copper. The combination mades a flexible hose to bridge a gap due to failure of existing pipe. However, the combination of metals which touch results in Galvanic Corrosion, think of a nail dropped in a tin can of water, over time the nail will deteriorate. Likewise with this pipe, but not for at least a year, so it is also good if you are remodeling and need to take a section out of service but still need water beyond the gap. The simple steps. Turn off water & use a pipe cutter (not a hack saw as the pipe needs to be round after cut to work with the coupling) to remove the damaged section of pipe. Use steel wool or sand paper to remove rough edges or burrs (so the plastic which creates the seal isn't damaged). Push each end of the hose connector fully over each of the freshly cut and deburred pipe ends. Turn water back on. Make appt for professional plumber or handy-friend since you now have time and aren't under the gun of having to deal with a huge leak in the middle of the night. If you want a permanent fix you want 2 of the shark bite brass couplings and a piece of brass pipe (or cvpc to bridge the failed section) As there is no mixed metal contact the Galvanic Corrosion isn't a factor. I had a hot water heater (point of use type) fail in my laundry room and was leaking on the floor, it was 5 minutes to close at HD and rand in and was directed to this to bridge the gap and told about the pipe cutter. About $27 later I was home and followed the directions and within an hour of finding the leak I had it fixed. Now I just got the replacement heater (which was under warranty) and I'll put it in after the holidays when I have time off work. If I had called a plumber I know the cost of the emergency call would have been 3 to 4 times more than this resolution.
Date published: 2015-12-07
Rated 5 out of 5 by from Excellent Product! The PEX line to my master bath sprung a leak where the PEX was bent to enter the wall from the attic. Since the regular PEX adapters are not recommend for use on bends, this flexible supply line was the answer. Installation was simple and so far it has not leaked. I bought a couple of spares to avoid having to make an emergency plumber call in the future. Although I have no intention of leaving this item as a permanent fix, it did work as advertised and got my water supply restored quickly.
Date published: 2016-01-18
Rated 5 out of 5 by from This is the fix when you don't have room to soldier. They worked as advertised without any issues. This is the fix when you don't have room to soldier. They worked as advertised without any issues.
Date published: 2017-09-19
Rated 5 out of 5 by from Easy to use I was a sceptic when I made the purchase. I am old school hard copper type of guy, but these made the job super easy. I replaced a 50 gallon water heater in half the time if I had took the time to sweat in copper fittings. Will need to wait see if these serve the long hual. Only time will tell.
Date published: 2016-08-12
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Does this hose come in shorter lengths and can it be used to connect galvanized pipe to galvanized pipe? I'd like to remove a length of leaky galvanized pipe and use this to tie it together.

Asked by: elisacm
Hello, Our coupling hoses are currently only available in an 18" length. These hoses are not suitable for use with galvanized pipe. Approved pipe/tube types are below. PEX (ASTM F876, CSA B137.5) Copper (ASTM B 88) CPVC (ASTM D 2846, CSA B137.6) PE-RT (ASTM F 2769) HDPE (SDR-9 ASTM D2737) Thank you
Answered by: SharkBite118
Date published: 2018-01-11

I recently had a leak on my heating system - in my home, (hot water). I replaced the leak, (cut it out), with an 18" braided Shark Bite flexible hose. It was quick and easy. Can I leave that hose in place? Thank you Dave

Asked by: cordeiro
Hello Dave, Our flex hoses are suitable for this application as long as they are located in an accessible location. These hoses are not suitable for use behind walls or underground. The water temperature should not exceed 200 degrees Fahrenheit or 200 psi. Thank you
Answered by: SharkBite118
Date published: 2018-01-17

Are the sharkbite flexible connection rated for compressed air applications using copper piping? Thank you

Asked by: BigPoppi
Hello, SharkBite push-to-connect fittings/valves/hoses are not approved for use with compressed air. Thank you
Answered by: SharkBite118
Date published: 2017-11-20

Can flexible coupling hoses be used for outdoor applications.

Asked by: Frank R
Hello, We only recommend using our flexible coupling hoses for indoor accessible locations. Thank you
Answered by: SharkBite118
Date published: 2017-09-11

Do the flexible coupling hoses (#U3008FLEX18LF) provide dielectric isolation?

Asked by: Barry D
Good morning, All flexible water heater connects have a washer on the threaded part. This prevents water from coming in contact with the threads between our hose and the galvanized nipple. You do not need a dielectric union when using our flex hoses as long as the washer is not damaged.
Answered by: SharkBite_KM
Date published: 2017-08-18

I need a short flex hose for my soft water system. I have a soft water loop made of flexible pvc and found a flexible water heater connector at Lowes. It looked like what I needed but didn't say for soft water app. Will this work for my soft water tank?

Asked by: Biily B
Hello, This connection would be suitable for water softener applications if the connection sizes were correct but it is not designed to be used with flexible PVC. Thank you
Answered by: SharkBite118
Date published: 2017-07-13

my 3/4 shark bite will not go more than 3/4 over cpvc

Asked by: davidkatan
Good morning, If you are unable to complete pushing the fitting to the insertion depth, you can try removing the fitting and taking the stiffener out for CPVC and Copper only. Sometimes, older CPVC and Copper have an inner diameter that prevents our stiffener to seat properly.
Answered by: SharkBite_KM
Date published: 2017-05-24

Can Shark Bite hoses be used on the top of water heater for supply and return where it is within 2 inches of the single wall vent?

Asked by: ryancompany3
Hello, Our SharkBite flexible water heater connectors are suitable for water heater applications within 2 inches of a single wall vent. Please check your local codes to make sure this is not prohibited in your area. Thank you
Answered by: SharkBite118
Date published: 2017-05-03
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