Nibco 4718 Bushing Spg x Slip ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$16.87
Nibco 4718 Bushing Spg x Slip - CPVC-CTS

Nibco 4718 Bushing Spg x Slip - CPVC-CTS

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Model: M178450

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

$16.87
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The CPVC-CTS bushing features a male spigot x female socket connection and provides a means for reducing the size of the line. Please refer to NIBCO technical data sheets and catalogs for engineering and installation information. Chlorinated Polyvinyl Chloride (CPVC) has proven to be an excellent material for hot corrosive liquids, hot and cold water distribution, and similar applications above the temperature range of PVC. CPVC will not rust, pit, scale or corrode. CPVC fittings are easy to install and are joined by solvent cementing or threading. NIBCO® plastic fittings are backed by a 5-year limited warranty. Because of its longstanding reputation for innovation and precision in design and manufacturing, NIBCO is the preferred brand in the industry. FlowGuard Gold® is a registered trademark of The Lubrizol Corporation.

  • Maximum service temperature 180-DegreeF
  • Not for use with compressed air or other gases
  • ASTM
  • ASTM D
  • NSF U.P. Certified
  • NSF/ANSI

Plastic Fittings Installation Instructions

Manufacturer Resources

Product Specs

All Application(s):
Lead-Free
All Basic Material:
CPVC - Chlorinated Polyvinyl Chloride
Classification:
CPVC-CTS Bushings
End Connection:
Solvent Weld
Pipe Schedule:
For CPVC CTS (Copper Tube Size)
Plastic End Connection Type:
Spg x S
Product Group:
Fitting
Product Type:
CPVC-CTS Bushings
System Use:
Commercial Plumbing, Residential Plumbing
Type of Bushing:
Standard;Reducing
Product Subgroup:
Bushing
Department:
Plumbing
Product Color:
Tan
Country of Origin:
United States

Nibco M178450 – Frequently Asked Questions

1) What do the two sizes mean on a Nibco 4718 spigot x slip bushing?
The first number is the spigot end, the second is the socket. The spigot is a male end that glues into the socket of a larger fitting, and the female socket accepts the smaller pipe. So a 1 inch x 3/4 inch bushing drops into a 1 inch fitting hub and takes 3/4 inch CPVC tube. Reductions run from 3/4 x 1/2 up to 2 x 1-1/2, including deep steps like 2 x 1/2 and 1-1/4 x 1/2.
2) Can I thread a Nibco 4718 CPVC bushing onto a pipe instead of gluing it?
No. Both ends of the 4718 are solvent weld, meaning the spigot glues into a fitting socket and the pipe glues into the socket end. There are no threads on it. If you need a threaded transition at that point, you want a CPVC male or female adapter, not this bushing.
3) How hot can water get in a line using Nibco 4718 CPVC bushings?
180 degrees F is the maximum service temperature. That covers domestic hot water and hot corrosive liquid service above what PVC will handle. One hard limit: never use it on compressed air or other gases.
4) Is this Nibco CPVC bushing approved for potable drinking water?
It is NSF U.P. Certified and listed lead-free, so it is suited to potable hot and cold water distribution in both commercial and residential plumbing.
5) What part number do I order for a 1-1/2 inch to 3/4 inch CPVC bushing from Nibco?
That is MPN M178200 in the 4718 series. Nearby steps off a 1-1/2 inch hub are M178100 for 1-1/2 x 1-1/4, M178150 for 1-1/2 x 1, and M178250 for 1-1/2 x 1/2.
6) Why is the Nibco 4718 bushing tan instead of white or orange?
Tan is the CPVC color code. A tan fitting on a job tells the next trade the line is CPVC rather than PVC, and the 4718 is molded in tan chlorinated polyvinyl chloride to match CPVC CTS pipe.
7) Will CPVC bushings corrode or scale in hard water like metal fittings do?
CPVC will not rust, pit, scale or corrode, which is why it gets specified for hot corrosive liquids and for water distribution where metal fittings would fail over time. That makes the 4718 a reasonable standardization choice across a portfolio of buildings on aggressive water.
How fast can I get the Nibco M178450 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 M178450 come with a warranty?
Absolutely. The Nibco M178450 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 M178450?
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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