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NIBCO press fittings are the fastest, easiest way to join PEX tubing systems. NIBCO® Press System® fittings are designed to join with PEX tube in residential and commercial water distribution, radiant floor heating, municipal water supply, geothermal climate control, snow melt and drip irrigation. The press fittings can also be installed underground. The NIBCO® Press System® is user friendly, quick and easy to install. When properly crimped a unique "N" witness mark is clearly visible. Please refer to NIBCO technical data sheets and catalogs for engineering and installation information. NIBCO® Press System® applies the proven performance of press technology to NIBCO valves and fittings – the most specified flow control products in the industry. The NIBCO® Press System® features a full range of precision engineered copper and copper alloy fittings, commercial valves, accessories, pressing tools, jaws and chains. In addition to its inherent qualities of beauty, durability and low maintenance, copper's reusability makes it an ideal application in sustainable projects. NIBCO® Press System® copper fittings are backed by a 50-year limited warranty. Because of its longstanding reputation for innovation and precision in design and manufacturing, NIBCO is the preferred brand in the industry.
Press System Installation Instructions
- Operating pressure 200 psi cwp
- Temperature range -20-DegreeF to 250-DegreeF
- Lead-free*
- Dezincification resistant
- ASTM B75 Alloy C12200 Copper
- NSF/ANSI/CAN-61
- Third party certified to UPC
- Third party certified to the performance requirements of CSA MSE 13 and PS-117
Press System Installation Instructions
Manufacturer Resources
Product Specs
- All Application(s):
- Lead-Free
- All Basic Material:
- Copper
- Classification:
- Press Adapters
- End Connection:
- PEX
- Metal End Connection Type:
- PEX x Prs
- Product Group:
- Fitting
- Product Type:
- Press Adapters
- System Use:
- Automatic Sprinkler Systems, Commercial Plumbing, Heating, HVAC, Irrigation, Lead Free*, Residential Plumbing
- Product Subgroup:
- Adapter
- Department:
- Plumbing
Nibco 9035060PC – Frequently Asked Questions
1) Does the Nibco PC604-P adapter connect PEX tubing directly to a copper press system?
That's exactly what it does. The PC604-P is a wrot copper adapter with a PEX end on one side and a press end on the other, so it takes PEX tubing into a NIBCO Press System copper line without soldering either side. The press joint is made with a press tool and jaw, and a correctly crimped joint shows the "N" witness mark.
2) What sizes does the Nibco PC604-P PEX to press adapter come in, including reducing sizes?
Five combinations: 1/2 inch, 3/4 inch, and 1 inch straight, plus two reducers, 1/2 inch x 3/4 inch and 3/4 inch x 1/2 inch. The reducers let you step up or down at the transition point instead of adding a separate coupling, so a 1/2 inch PEX branch can land on a 3/4 inch press line in one fitting.
3) Can the PC604-P PEX adapter be used on potable drinking water lines?
Yes. The fitting is lead-free and certified to NSF/ANSI/CAN-61 for potable water contact, with third party certification to UPC. It's also dezincification resistant, which matters on aggressive water. That covers both residential and commercial water distribution as well as municipal water supply.
4) What pressure and temperature can the Nibco PEX to press copper adapter handle?
200 psi CWP, over a temperature range of -20 F to 250 F. That range covers domestic hot and cold water, hydronic heating and radiant floor loops, and snow melt lines where the tubing sees cold on the return side.
5) Can a PEX to press adapter like the Nibco PC604-P be buried underground or embedded in a slab?
NIBCO states the press fittings can be installed underground, and the system is used for radiant floor heating, snow melt, geothermal climate control and drip irrigation. Those are all buried or embedded applications, which is a large part of why this transition gets specified over a soldered one on slab and site work.
6) Should I use a press PEX adapter or a soldered copper adapter for a PEX to copper transition?
Press is the choice when you can't or don't want to bring flame to the joint: occupied buildings, finished ceilings, hot work permit restrictions, or a wet line you can't dry out. The PC604-P presses onto the copper side with a tool and jaw instead of a torch, and the "N" witness mark gives a visual check the joint was pressed. A soldered adapter is still the cheaper fitting if you're already brazing the run and have open access. Note that with press you're committing to owning or renting the NIBCO press tool, jaws and chains for the sizes you're running.
7) Do I need a special tool to install the Nibco PC604-P PEX adapter, or is the PEX side crimped separately?
Both ends are made up with tooling, not solder. The press end takes a NIBCO press tool with the jaw or chain sized to that fitting, and the PEX end is joined per the NIBCO Press System installation instructions. Get the jaw size right for each size you're running: 1/2, 3/4 and 1 inch each need their own.
8) Which Nibco part number do I order for a 3/4 inch PEX to 1/2 inch press adapter?
MPN 9035040PC is the 3/4 x 1/2 inch. The opposite reducer, 1/2 x 3/4 inch, is 9035010PC. The two are not interchangeable, so read the order carefully: get the size on each end right before it goes in the wall.
9) What copper alloy is the Nibco PC604-P adapter made from?
ASTM B75 Alloy C12200 copper, the standard drawn copper tube alloy. For a spec-driven job that's the line to check against the submittal: the body is wrot copper rather than a brass or bronze casting, so it matches the copper tube it presses onto for galvanic behavior and thermal movement.
How fast can I get the Nibco 9035060PC delivered?
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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 Nibco 9035060PC come with a warranty?
Absolutely. The Nibco 9035060PC is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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