Both of these exist for the same reason: nobody wants to hold a torch inside a wall cavity. SharkBite pushes on by hand. ProPress crimps in about five seconds with a tool that costs more than most people’s first car repair. They solve the same problem from opposite ends of the budget.
Need one back off? See how to remove a push-to-connect fitting.
The decision is almost entirely about how many joints you are going to make in your life — and there is a specific myth about SharkBite that is worth clearing up with the actual listing number.
The short answer
Doing this for a living: ProPress. Faster per joint, far cheaper per fitting, and it presses wet lines you could never solder.
SharkBite behind a wall is allowed — push-to-connect fittings are covered by ASSE 1061, the performance standard that approves them for underground and behind-the-wall use, certified by IAPMO, NSF and CSA under both the UPC and IPC. The trade’s caution is about install quality, not the fitting.
Neither is a compromise on the joint itself. Both seal on an O-ring, both are code-listed, both fail the same way when the tube is cut badly.
How each one actually works
SharkBite — push-to-connect
Inside the brass body: a stainless steel grab ring with teeth that bite the tube and stop it pulling out, and an EPDM O-ring that does the sealing. You cut the tube, deburr it, mark the insertion depth, and push until it stops. That is the whole install.
The underrated advantage: one fitting works on copper, PEX, CPVC and PE-RT. Transitioning between materials — the exact situation that makes repairs miserable — needs no special adapter. For PEX you add the stiffener sleeve; on copper you do not.
They also come apart. A disconnect clip releases the grab ring, and the fitting can be reused. No other permanent-rated system does that.
ProPress — press-connect
A fitting with an O-ring already in the socket. The tube goes in, a powered jaw closes around it, and roughly four to seven seconds later the fitting is permanently deformed onto the pipe. Governed by ASME B16.51, and it works on Type K, L or M copper without changing anything.
The thing press does that nothing else does: it presses a line that still has water weeping through it. You cannot solder a wet joint. That single capability is why press took over service work.
The comparison that actually decides it
| SharkBite (push-fit) | ProPress (press) | |
|---|---|---|
| Tool needed | Cutter and deburr tool | Press tool — a serious purchase |
| Cost per fitting | Highest of the three systems | Several times a sweat fitting, well under push-fit |
| Time per joint | Seconds, but slower prep | 4–7 seconds under the jaw |
| Works on | Copper, PEX, CPVC, PE-RT | Copper and stainless |
| Reversible | Yes — disconnect clip | No — cut it out |
| Wet line | Yes | Yes |
| Concealed use | Approved (ASSE 1061) | Routine |
| Break-even | A handful of joints | Volume work |
The economics, plainly
SharkBite has the highest cost per fitting and the lowest cost to start. ProPress inverts that: the fittings are much cheaper than push-fit, but you cannot make a single joint until you have bought the tool.
So the crossover is not really about fittings at all — it is about labor time. A pro pressing dozens of joints a day recovers the tool in saved hours, not in fitting savings. A homeowner making eight joints will never recover it, and should not try. Our press tool guide lays out what that purchase actually costs, and press vs soldering works through the same math against a torch.
I send the trade an occasional note when I settle a question like this with the manufacturer’s own paperwork.
The behind-the-wall question, settled properly
This is where most advice goes vague, so here is the specific position.
The code answer: push-to-connect fittings are governed by ASSE 1061, the performance standard for push-fit fittings, which approves them for underground and behind-the-wall applications. SharkBite states its fittings meet the Uniform Plumbing Code and International Plumbing Code and are certified by IAPMO, NSF and CSA. So “you can’t hide a SharkBite” is, as a code statement, simply wrong.
The trade answer, and why it is not a contradiction: plenty of plumbers still will not conceal one, and their reasoning is sound. A push-fit joint’s integrity depends entirely on things you cannot see afterward — whether the tube was cut square, whether it was deburred, whether it was pushed fully to the depth mark, whether the pipe was scored. A press joint is verified by the tool; a soldered joint is verified by the solder line. A push-fit joint is verified by the installer having done it right.
What I would actually tell you: the listing is real and you are allowed to do it. If you conceal one, mark the depth on the tube before inserting so you can see it went all the way, and pressure-test before the drywall goes up, which the manufacturer recommends anyway. Where you have the choice, keeping push-fit joints accessible costs nothing and removes the only real variable.
What fails, on both
The failure mode is nearly identical, which surprises people:
- A bad cut. Out of square, or burred, and the O-ring gets nicked on the way in. This is the number one cause on both systems. Use a proper cutter, deburr every time.
- Not fully inserted. Push-fit needs the depth mark; press needs the tube seated to the shoulder before the jaw closes.
- A scored or out-of-round pipe. An old tube crushed by a pipe wrench will not seal on either.
- The forgotten joint. Press systems build in leak-before-press detection so an unpressed fitting shows itself under test. Push-fit has no equivalent — which is one more argument for pressure-testing before you close anything up.
So which should you buy?
A handful of joints, mixed materials: SharkBite. The copper-to-PEX transition alone justifies it.
A whole-house repipe in copper: ProPress, or hire someone who owns the tool.
Service and repair for a living: ProPress. Wet-line pressing pays for the tool by itself.
Concealed joints: either is listed — but press is verified by the tool, and that is worth something behind drywall.
If you are weighing push-fit more broadly, see our push-to-connect fittings guide and SharkBite vs soldered copper. For the press side, start with the best copper press fittings.
If the joint in question is a shut-off rather than a run of pipe, the comparison shifts — see compression vs push-to-connect valves for which stop to put under a sink or toilet.
If press is the direction, the tool is the next decision — see RIDGID vs Milwaukee press tools.
The parts, if you want them
Heads up: the product links below are Amazon affiliate links — you pay no more, and as an Amazon Associate we earn from qualifying purchases.
- SharkBite 1/2″ push-to-connect coupling — the exact fitting this article is about; keep a couple in the truck or junk drawer for emergency repairs.
- Viega ProPress copper couplings — the press side of the comparison; only worth it if you have access to a press tool.
Full breakdowns: our push-to-connect fittings guide, copper press fittings guide, and press tool guide.
Frequently asked questions
Can SharkBite fittings be used behind a wall?
Yes. Push-to-connect fittings are covered by ASSE 1061, the performance standard that approves them for underground and behind-the-wall applications, and SharkBite states its fittings meet the UPC and IPC with IAPMO, NSF and CSA certification. Confirm your local code, mark the insertion depth before pushing, and pressure-test the system before closing the wall.
Is ProPress better than SharkBite?
For volume work, yes — it is faster per joint, the fittings cost far less, and the joint is verified by the tool. For a handful of joints it is not, because you have to buy a press tool first and you will never recover that on a small job. Both are code-listed and both make a permanent connection.
Which is cheaper, SharkBite or ProPress?
It depends entirely on joint count. SharkBite has the highest cost per fitting and needs no tool. ProPress fittings cost much less each, but nothing can be installed until a press tool is bought. Below roughly a dozen joints SharkBite is cheaper overall; at repipe volume press wins on labor time, not on fitting price.
Can you take a SharkBite fitting off and reuse it?
Yes, using the disconnect clip or tongs that release the grab ring. This is unique among permanent-rated systems — a press joint has to be cut out. Inspect the O-ring before reusing a fitting, and do not reuse one that was installed on a scored pipe.
Do SharkBite and ProPress work on wet lines?
Both can be installed on a line that is still weeping, which is the main reason each displaced soldering for repair work. You cannot solder a wet joint at all. Shut off and drain what you reasonably can, but neither system requires a bone-dry pipe.
What actually makes a push-fit or press joint leak?
Almost always the tube, not the fitting: a cut that is out of square, a burr that nicks the O-ring on insertion, a pipe not pushed fully to the depth mark, or an old tube that has been crushed out of round. Cut square, deburr every time, seat fully, and pressure-test before sealing anything up.
Sources
- SharkBite — Can SharkBite Be Used Behind Walls? (codes, ASSE 1061, certifications)
- ASME B16.51 — Copper and Copper Alloy Press-Connect Pressure Fittings
For the plumbers reading this
Most of this site is written for homeowners — this page clearly isn’t. If you’re in the trade and want the occasional straight-shooting note when I publish something like this (fittings comparisons, tool tests, code changes), drop your email. No spam, no course funnel, written by a licensed GA journeyman.
Related: one of these comes apart and one does not — see how to remove a press fitting.
Related: both handle damp pipe, and neither likes running water — see can you press a wet line.
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