Nibco T-413-Y-LF Check Valve -...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$267.17
Nibco T-413-Y-LF Check Valve - Lead-Free*, PTFE Seat Disc, Threaded

Nibco T-413-Y-LF Check Valve - Lead-Free*, PTFE Seat Disc, Threaded

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Model: NL740XA

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

$267.17
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The NIBCO® check valve features a screw-in bonnet for accessibility to repair or replace parts. Swing check valves may be installed in horizontal positions (or vertical with flow moving up). Please refer to NIBCO technical data sheets, chemical resistance guides and catalogs for engineering and installation information. Choose NIBCO® valves for the most specified, versatile and economical valve option in commercial and residential applications. NIBCO® valves are backed by the NIBCO INC. 5-year 125% limited warranty.

  • Valve pressure rating 200 psi/13.8 bar non-shock cold working pressure
  • Y-pattern
  • Renewable seat and disc
  • Regrinding type
  • NIBCO® double-oval lead-free body marking
  • Class 125 threaded end connections
  • Lead-free*
  • Dimensions and workmanship conform to MSS SP-80
  • NSF/ANSI/CAN-61 and 372

Check Valve Bronze Swing IOM Manual

Manufacturer Resources

Product Specs

All Application(s):
Lead-Free
All Basic Material:
Lead-Free
Classification:
Swing Lead-Free
End Connection:
Threaded
Product Group:
Valve
Seat Seal Material:
PTFE
System Use:
Lead Free*
Type of Check Valve:
Swing
Type of Valve:
Check Valve
Valve End Connection Type:
T -- Female NPT Thread (FIPT)
Valve Multi Turn Bonnet Design:
Screw-in Bonnet
Valve Pressure Rating (CWP):
200 PSI / 13.8 Bar CWP
Valve Trim Package:
PTFE Disc
Product Subgroup:
Valves
Product Type:
Swing Lead-Free
Department:
Plumbing

Nibco NL740XA – Frequently Asked Questions

1) Can a Nibco T-413-Y-LF bronze swing check valve be installed in a vertical pipe run?
Only if the flow is moving up. The T-413-Y-LF is a swing check, so the disc relies on gravity and flow direction to seat. It installs in horizontal runs, or vertical runs with upward flow. On a vertical drop where flow moves down, it won't hold, and you need a different check style for that leg.
2) Is the Nibco T-413-Y-LF check valve approved for potable water?
Yes. The T-413-Y-LF is a lead-free bronze body carrying NSF/ANSI/CAN 61 and 372, which is the certification pair inspectors look for on domestic water. It also carries the NIBCO double-oval lead-free body marking, so the compliance is readable on the valve itself after it's installed, which matters when an inspector is standing at the wall.
3) What pipe connections does the Nibco T-413-Y-LF check valve use, and what sizes does it come in?
Female NPT threaded ends (FIPT), Class 125, in six sizes: 1/2, 3/4, 1, 1-1/4, 1-1/2 and 2 inch. It threads straight onto standard NPT male pipe or a threaded nipple, so no soldering and no dielectric concerns at the joint itself. If your line is copper, you'll need a male adapter on each side.
4) Can the Nibco T-413-Y-LF check valve be repaired in place instead of replaced?
Yes, and that's the reason to spec it over a throwaway check. It uses a screw-in bonnet, so the top comes off in line and the seat and disc are renewable. It's also a regrinding type, meaning a scored seat can be reground rather than the whole body pulled out of the pipe. For an MRO shop keeping a building running, that turns a repipe into a bench job.
5) Will the Nibco T-413-Y-LF check valve meet a spec calling for MSS SP-80 bronze check valves?
Yes. Dimensions and workmanship conform to MSS SP-80, which is the standard most commercial plumbing specs cite for bronze gate, globe and check valves. Combined with Class 125 threaded ends, it drops into a spec written around a standard bronze threaded check without a substitution request.
6) What pressure can the Nibco T-413-Y-LF check valve handle?
200 psi / 13.8 bar non-shock cold working pressure. That covers ordinary domestic water and booster-pump discharge in most commercial buildings. Non-shock is the operative word: it's a cold water rating and does not account for water hammer, so on a system with quick-closing solenoids or flush valves you want arrestors ahead of it rather than leaning on the 200 psi number.
7) What is the seat disc made of on the Nibco T-413-Y-LF, and why does it matter?
PTFE. A PTFE disc seats against the bronze more forgivingly than metal-to-metal, so it takes low-flow closure and a bit of debris without weeping, and it holds up across a wider chemical range than rubber composition discs. If your service is hot or chemically aggressive, check it against NIBCO's chemical resistance data before committing.
8) Which Nibco part number do I order for a 1 inch lead-free threaded swing check?
NL740XA is the 1 inch. The rest of the range runs NL740X6 for 1/2 inch, NL740X8 for 3/4, NL740XB for 1-1/4, NL740XC for 1-1/2 and NL740XD for 2 inch. All are the same T-413-Y-LF valve, just sized, so a job needing mixed sizes stays on one product line and one submittal.
9) Is a bronze swing check like the T-413-Y-LF the right choice for a pump discharge line?
It depends on how the pump cycles. A swing check handles steady flow well and has low pressure drop, but the disc travels a full arc before it seats, so on a pump that starts and stops frequently it can slam. For that duty a spring-loaded silent check closes before flow reverses. Where the pump runs continuously or cycles slowly, and you want a valve you can service in line, the T-413-Y-LF with its renewable seat and disc is the practical pick at 200 psi CWP.
10) What does Y-pattern mean on a bronze swing check valve, and how is it different from a straight body?
The Y-pattern angles the bonnet off the centerline instead of putting it straight on top. That gives the disc a shallower swing arc and lower pressure drop than a right-angle body, and it puts the access cap where you can get a wrench on it without breaking the pipe. It's the pattern to reach for when the check sits in a tight mechanical room and someone will eventually have to service it.
How fast can I get the Nibco NL740XA 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 Nibco NL740XA come with a warranty?
Absolutely. The Nibco NL740XA 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 Nibco NL740XA?
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
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