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NIBCO® Press System® fittings are the fastest, easiest way to join copper tubing systems in residential and commercial potable, hot, chilled and process water applications for plumbing and HVAC systems. 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
- Complies with ASME B16/51 Performance
- 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 Tees
- End Connection:
- Press
- Metal End Connection Type:
- Prs x Prs x Prs
- Product Group:
- Fitting
- Product Type:
- Press Tees
- System Use:
- Automatic Sprinkler Systems, Commercial Plumbing, Heating, HVAC, Irrigation, Lead Free*, Residential Plumbing
- Product Subgroup:
- Tee
- Department:
- Plumbing
Nibco 9099300PC – Frequently Asked Questions
1) Will the Nibco PC611 press tee work on my existing copper water lines, or does it need special pipe?
The PC611 is a wrot copper tee with press ends on all three outlets, so it goes onto standard copper tube. No solder, no flame. You press it with the appropriate tool and jaw, and a properly crimped joint shows a visible "N" witness mark on the fitting so an inspector or a foreman can confirm the connection from across the room. It is rated 200 psi cwp and runs from -20 F to 250 F, which covers potable water, hot and chilled water, and process water in both residential and commercial systems.
2) Is the Nibco PC611 copper tee lead free for potable water?
Lead-free, and third party certified to UPC. It is also certified to the performance requirements of CSA MSE 13 and PS-117, and complies with ASME B16.51 performance. The body is ASTM B75 alloy C12200 copper and it is dezincification resistant. That combination is what a hospital, school or municipal facility spec typically asks for on domestic water.
3) Does the Nibco PC611 tee reduce on the branch so I can take a 3/4 inch takeoff off a 2 inch main?
Yes, that exact configuration exists: the 2 x 2 x 3/4 tee runs 2 inch straight through and drops a 3/4 inch press branch. Similar branch takeoffs are available as 2 x 2 x 1/2, 2 x 2 x 1, 2 x 2 x 1-1/4 and 2 x 2 x 1-1/2, and the same pattern repeats on the 1-1/4, 1-1/2, 2-1/2, 3 and 4 inch mains. All three ends are press, so there is no soldered branch to deal with.
4) Do I need a special press tool for Nibco Press System copper fittings?
Yes, a press connection is a mechanical crimp, so it takes a press tool with the correct jaw or chain for the tube size. Nibco supplies pressing tools, jaws and chains as part of the Press System line alongside the fittings and valves. Budget for that before you spec press on a job, since the tool is the one thing a solder crew will not already own. On the plus side there is no torch, so no hot work permit and no fire watch.
5) What size reducing tees does the Nibco PC611 come in?
The PC611 runs from 1/2 inch through 4 inch, in both straight tees (1/2, 3/4, 1, 1-1/4, 1-1/2, 2, 2-1/2, 3 and 4 inch) and a long list of reducing combinations. Reducers cover branch-down configurations like 1 x 1 x 1/2 and 2 x 2 x 3/4, run reductions like 1-1/2 x 1 x 1-1/2, and bull-head style arrangements such as 1 x 1 x 1-1/4 and 1/2 x 1/2 x 3/4. Larger sizes include 4 x 4 x 1/2 all the way up to 4 x 4 x 3 and 4 x 3 x 4. Sizes are called out in run x run x branch order.
6) Can press copper fittings be installed underground or buried?
Yes. Nibco states the Press System fittings can be installed underground, which is not true of every press system on the market. The copper body is dezincification resistant, and copper's durability underground is a large part of why it still gets specified for buried service lines. Confirm your local code and any required sleeving or wrap for the soil conditions on the site.
7) Can I use a Nibco press copper tee on a hydronic heating or chilled water system, not just domestic water?
Yes. The PC611 tee is listed for commercial plumbing, residential plumbing, heating, HVAC, irrigation and automatic sprinkler systems. The -20 F to 250 F range covers chilled water on the low end and hydronic supply on the high end, at 200 psi cwp. For HVAC work that means one fitting family across domestic water, heating hot water and chilled water risers.
8) Should I use press or solder copper fittings on a commercial job?
Press wins where hot work is the problem: occupied buildings, ceilings full of insulation, hospitals and hotels where a torch means a fire watch and a permit. It also goes faster, and a green apprentice can make a repeatable joint. Solder is still the lower material cost and needs no tool investment, so it holds up on new construction where the crew already owns torches and open framing makes the work easy. The PC611 is the press option, wrot copper, rated 200 psi cwp from -20 F to 250 F, and it can also go underground. If you already own the press tool and jaws, press is usually the faster call.
9) How do I know a Nibco press joint was crimped correctly?
A properly crimped Nibco Press System joint shows a unique "N" witness mark on the fitting. That is the visual confirmation, and it is what lets a foreman or inspector walk a ceiling and verify joints without pressure testing each one individually. Any fitting without the mark has not been pressed. Nibco's installation instructions cover insertion depth and tool procedure.
10) What is the difference between a straight tee and a reducing tee when ordering the PC611?
Sizes are written run x run x branch. A single size like 3/4 inch means all three openings are 3/4. Something like 1 x 3/4 x 1/2 means the two run ends and the branch are all different, so orientation matters when you install it. There are also bull-head configurations where the branch is larger than the run, such as 1 x 1 x 1-1/4 and 1-1/2 x 1-1/2 x 1-1/4. Read the size string left to right before you order, because a 1 x 1/2 x 1 and a 1 x 1 x 1/2 are not the same fitting.
11) Can I use a Nibco PC611 press tee on a fire sprinkler system?
Automatic sprinkler systems are among the listed uses for this tee, alongside commercial plumbing, heating, HVAC and irrigation. It carries a 200 psi cwp rating. Sprinkler work is governed by the approving authority and the system's own listing requirements, so verify the fitting against the specific system spec and the AHJ before installing.
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Does the Nibco 9099300PC come with a warranty?
Absolutely. The Nibco 9099300PC is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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