Spears 878-015CSR 1-1/2" CPVC ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$78.57
$28.57
Spears 878-015CSR 1-1/2" CPVC Schedule 80 Spigot x FPT Female Adapter

Spears 878-015CSR 1-1/2" CPVC Schedule 80 Spigot x FPT Female Adapter

(No reviews yet) Write a Review

Model: 878-015CSR

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

$78.57
$28.57
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Spears 878-015CSR 1-1/2" CPVC Schedule 80 Spigot x FPT Female Adapter

The Spears 878-015CSR is a 1-1/2" CPVC Schedule 80 spigot x FPT female adapter, engineered to transition a spigot-end CPVC fitting into a female threaded (FPT) connection. Molded from heavy-wall Schedule 80 CPVC, this adapter is built for piping systems that demand chemical resistance and long-term durability. Its SPGxFPT configuration makes it a practical solution for connecting threaded valves, pumps, or accessories directly into a spigot-style CPVC run without additional couplings.

Key Features

  • Trade Size: 1-1/2" sizing for standard CPVC pipe and fitting systems.
  • Durable Construction: Molded CPVC material provides strong chemical and corrosion resistance for demanding fluid-handling applications.
  • Schedule 80 Rated: Heavy-wall Schedule 80 construction delivers added strength and pressure handling versus lighter-wall alternatives.
  • Spigot x FPT Configuration: One end is a plain spigot for solvent-welding into CPVC fittings; the other is a female NPT thread (FPT) for connecting threaded components.
  • Adapter Function: Simplifies transitions between solvent-weld CPVC piping and threaded fittings, valves, or equipment connections.
  • Consistent Manufacturing: Precision-molded to Spears' standard fitting dimensions for reliable, leak-resistant joints when properly installed.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • CPVC Piping Systems
  • Industrial and Commercial Piping Installations
  • Chemical Processing and Fluid Handling
  • Transitions Between Spigot and Threaded Connections
  • Pipe System Repairs and Retrofits

Why Spears?

Spears is a recognized manufacturer of thermoplastic piping products, and the 878-015CSR reflects that standard with Schedule 80 CPVC construction built for consistent, reliable performance. For contractors and facility teams working with CPVC piping systems, this spigot x FPT adapter offers a straightforward, code-conscious way to bridge solvent-weld and threaded connections without compromising system integrity.

Manufacturer Resources

CPVC Schedule 80 Fittings

Product Specs

Department:
Plumbing
Product Group:
PVC & CPVC Fittings
Product Subgroup:
Pipe Fittings
Product Type:
Adapter
Product Size:
1-1/2

Spears 878-015CSR – Frequently Asked Questions

1) What do the two ends of the Spears 878-015CSR adapter connect to?
One end is a plain spigot, sized to solvent weld into the socket of a CPVC fitting, and the other end is a female NPT thread (FPT) that takes a male-threaded valve, pump nipple, gauge, or piece of equipment. Trade size is 1-1/2 inch on both ends, so you go straight from a solvent-weld CPVC run into a threaded component without adding a coupling.
2) What is the difference between a spigot x FPT adapter and a socket x FPT female adapter?
It comes down to which half of the joint you already have. A socket female adapter has a bell that accepts pipe. The 878-015CSR is the opposite: its plain spigot end is pipe-sized on the outside, so it drops into the socket of another CPVC fitting, a coupling, an elbow, a tee, or a valve socket. Use the spigot version when your next connection point is a fitting hub rather than an open pipe end. If you are landing on a cut pipe end instead, you want the socket x FPT style.
3) Can I use the Spears 878-015CSR on Schedule 40 CPVC pipe and fittings?
The spigot is Schedule 80 CPVC, but Schedule 40 and Schedule 80 share the same outside diameters at a given trade size, so a 1-1/2 inch spigot seats in a 1-1/2 inch Schedule 40 CPVC socket. The tradeoff is the system rating: mixing in Schedule 40 components drops the working pressure of the line to whatever the lightest-wall part is rated for, not the Schedule 80 fitting.
4) Is CPVC the right material, or should I be using PVC for this line?
CPVC is the choice when the line runs hot. It handles higher service temperatures than PVC while keeping the same chemical and corrosion resistance, which is why it shows up in chemical processing and industrial fluid handling. The 878-015CSR is molded CPVC throughout. One caution: CPVC and PVC are different materials and take different solvent cement, so if your existing run is PVC, buy the PVC version of this adapter rather than mixing.
5) Do I use Teflon tape or solvent cement on the threaded side of this CPVC adapter?
Two different joints, two different methods. The spigot end gets CPVC primer and CPVC solvent cement into the mating fitting socket. The FPT end is a thread, so it gets PTFE tape or a thread sealant rated for CPVC, and it goes hand tight plus roughly one to two turns with a strap wrench. Never put solvent cement on the threads, and do not over-torque a plastic female thread, that is what splits the hub.
6) What is the correct Spears part number for a 1-1/2 inch CPVC Sch 80 spigot x FPT adapter?
878-015CSR. The 878 prefix is the Spears CPVC Schedule 80 spigot x FPT female adapter mold, and the 015 is the 1-1/2 inch trade size. If you are ordering across a job, keep that full designation, the base number alone will pull a different material or end configuration.
7) Can I use this adapter to tie a CPVC line into a threaded metal pipe or valve?
Yes, the FPT side is a standard female NPT thread, so a male-threaded brass, steel, or stainless nipple or valve will land in it. Run the plastic female against the metal male, not the reverse, and use PTFE tape rather than pipe dope with solids. Keep the metal side supported so its weight and any thermal movement are not carried by the plastic hub.
8) Is this adapter suitable for a repair or a retrofit on an existing CPVC system?
That is one of its normal uses. Because the spigot end plugs into an existing fitting socket instead of needing an open pipe end, it is useful when you are adding a threaded takeoff, a gauge, or a valve to a run you do not want to cut back further. The 878-015CSR is listed for pipe system repairs and retrofits alongside industrial and commercial CPVC installations.
How fast can I get the Spears 878-015CSR 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 Spears 878-015CSR come with a warranty?
Absolutely. The Spears 878-015CSR 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 Spears 878-015CSR?
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
Why buy the Spears 878-015CSR from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!