Pasco 5615125 1-1/2" x 1-1/4" ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$2.78
Pasco 5615125 1-1/2" x 1-1/4" Cast Iron Pipe/Plastic Flexible Coupling

Pasco 5615125 1-1/2" x 1-1/4" Cast Iron Pipe/Plastic Flexible Coupling

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Model: 5615125

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

$2.78
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Pasco 5615125 1-1/2" x 1-1/4" Cast Iron Pipe/Plastic Flexible Coupling

The Pasco 5615125 Flexible Coupling is a rough-in transition fitting built to join 1-1/2" cast iron or plastic pipe to 1-1/4" cast iron or plastic pipe in a single connection. Designed for behind-the-wall and under-floor drain-waste-vent (DWV) work, this flexible coupling lets a plumber or contractor step down pipe diameters and bridge dissimilar pipe materials without cutting in a rigid reducer fitting. It is supplied by Pasco in bulk case quantities for professional rough-in supply houses and contractors stocking common DWV transition sizes.

Key Features

  • Trade Size: Transitions 1-1/2" pipe down to 1-1/4" pipe in one fitting, ideal for DWV branch line reductions.
  • Material Compatibility: Rated for use with both cast iron pipe and plastic pipe on each connection end, giving installers flexibility when tying into mixed-material drain systems.
  • Flexible Coupling Design: The flexible-coupling configuration accommodates minor pipe misalignment during rough-in, simplifying installation in tight wall or floor cavities.
  • Bulk Case Packaging: Packaged 200 EA per case with a minimum order quantity of 1 EA and an order quantity multiple of 100 EA, suited to supply-house and contractor stocking programs.
  • Compact Package Weight: Consumer package weight of 0.318 LB per unit keeps shipping and shelf-stocking manageable for high-volume rough-in inventory.

Technical Specifications

  • Trade Size: 1-1/2" Cast Iron Pipe/Plastic x 1-1/4" Cast Iron Pipe/Plastic
  • Prop 65 Warning: Y
  • Quantity: 200 EA
  • Minimum Order Quantity: 1 EA
  • Order Quantity Multiple: 100 EA
  • Consumer Package Weight: 0.318 LB

Typical Applications

  • Residential and Commercial Rough-In Plumbing
  • Drain-Waste-Vent (DWV) Pipe Transitions
  • Cast Iron to Plastic Pipe Connections
  • Pipe Size Reductions Behind Walls or Under Floors
  • Renovation and New Construction Rough-In Work

Why Pasco?

Pasco supplies this flexible coupling as a straightforward, purpose-built solution for plumbers who need a reliable 1-1/2" to 1-1/4" transition between cast iron and plastic DWV pipe. Supplied in bulk case quantities with clear minimum and multiple order requirements, it is stocked with contractor and supply-house workflows in mind, helping keep common rough-in transition sizes on hand for the job.

Manufacturer Resources

Product Specs

Prop 65 Warning:
Y
Product Type:
Flexible Coupling
Consumer Package Weight:
0.318 LB
Item Quantity:
200 EA
Minimum Order Quantity:
1 EA
Order Quantity Multiple:
100 EA
list_batch:
PAO-20260924
Department:
Plumbing
Product Subgroup:
Fittings and Valves
Product Size:
1-1/2"

Pasco 5615125 – Frequently Asked Questions

1) Will the Pasco 5615125 coupling join 1-1/2 inch cast iron to 1-1/4 inch PVC drain pipe?
That is exactly what it does. The Pasco 5615125 is a reducing flexible coupling with a 1-1/2 inch end and a 1-1/4 inch end, and each end is rated for cast iron or plastic pipe. So cast iron on the large side and PVC on the small side is a sanctioned combination, as is plastic to plastic or cast iron to cast iron.
2) Is this coupling meant for pressure water lines or only drain piping?
Drainage only. The Pasco 5615125 is a DWV rough-in transition fitting for behind-the-wall and under-floor drain, waste and vent work. Flexible couplings of this type are not pressure fittings; for supply piping you need a rigid reducing fitting rated for the line pressure.
3) Can I use a flexible coupling instead of a rigid reducing bushing on a DWV branch line?
Yes, and that is the point of the 5615125. A rigid reducer has to be cut in square and true; the flexible coupling takes up minor pipe misalignment, which is why it gets used in tight wall and floor cavities on rough-in. It also bridges dissimilar materials (cast iron to plastic) in one fitting, where a rigid reducer would need the right hub or socket on both ends. Use a rigid fitting where you want a fixed, supported joint; use this where the two pipes do not line up perfectly or do not match in material.
4) Is the Pasco 5615125 flexible coupling sold individually or do I have to buy a case?
Minimum order is 1 each, but the order quantity multiple is 100 each, so quantities are purchased in hundreds past the minimum. A full case is 200 each. It is packaged for supply-house and contractor stocking rather than one-off pickup.
5) Will this fitting work for a renovation where I am tying new plastic into existing cast iron stack piping?
That is one of its stated applications. Renovation tie-ins between cast iron and plastic are where this coupling earns its keep, since both ends accept either material and the flexible body tolerates the small offsets you get when mating new pipe to an existing run. Just confirm your existing pipe is 1-1/2 inch on one side and 1-1/4 inch on the other, since this is a reducing coupling and not a straight 1-1/2 inch repair coupling.
6) Does the Pasco 5615125 coupling carry a Prop 65 warning?
Yes. The 5615125 flexible coupling is flagged with a Prop 65 warning, which matters if you are submitting product data for a California job or a public agency purchase order.
How fast can I get the Pasco 5615125 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 Pasco 5615125 come with a warranty?
Absolutely. The Pasco 5615125 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 Pasco 5615125?
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 Pasco 5615125 from ZenSupply?
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