A.Y. McDonald 6133T Compressio...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$4.38
A.Y. McDonald 6133T Compression Coupling, 1-1/4" CTS x 1" IPS Brass Fitting

A.Y. McDonald 6133T Compression Coupling, 1-1/4" CTS x 1" IPS Brass Fitting

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Model: 6133T-1-1/4

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

$4.38
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A.Y. McDonald 6133T Compression Coupling, 1-1/4" CTS x 1" IPS Brass Fitting

The A.Y. McDonald 6133T is a compression coupling built for rough-in water service work, transitioning 1-1/4" CTS (copper tube size) tubing to 1" IPS (iron pipe size) pipe in a single fitting. Identified by model 6133T-1-1/4 (McDonald reference 4130-761), this coupling is designed for underground and behind-the-wall service line connections where a plumber or utility contractor needs a reliable pack-joint style transition between CTS polyethylene or copper tubing and IPS-threaded or IPS-sized pipe. Its compression-style joint design allows for straightforward field assembly without soldering or solvent welding, making it a practical choice for water service installations and repairs.

Key Features

  • Dual Sizing: Transitions 1-1/4" CTS tubing to 1" IPS pipe in one fitting, simplifying service line size changes.
  • Compression Coupling Design: Pack-joint compression connection allows field assembly onto CTS tubing and IPS pipe without soldering or gluing.
  • Model Reference: Cataloged as A.Y. McDonald 6133T-1-1/4, cross-referenced to McDonald part number 4130-761 for accurate ordering.
  • Rough-In Application: Suited for underground water service connections and behind-the-wall or below-grade transitions between differing pipe standards.
  • A.Y. McDonald Manufacturing: Supplied by A.Y. McDonald, a long-established name in waterworks and plumbing rough-in fittings.

Technical Specifications

  • Model: 6133T-1-1/4
  • Cross Reference: 4130-761
  • Size: 1-1/4" CTS x 1" IPS
  • Connection Type: Compression (pack joint)

Typical Applications

  • Underground Water Service Line Connections
  • CTS-to-IPS Pipe Size Transitions
  • Residential and Commercial Rough-In Plumbing
  • Water Service Repair and Replacement Work

Why A.Y. McDonald?

A.Y. McDonald has long supplied waterworks and plumbing professionals with rough-in fittings built for dependable field installation. The 6133T compression coupling continues that focus, giving contractors a straightforward way to join CTS tubing to IPS pipe on water service runs without specialized tools or heat-based joining methods.

Manufacturer Resources

Product Specs

list_batch:
AYM-20260924
Product Type:
Coupling
Connection Type:
Compression
Department:
Plumbing
Product Group:
Plumbing
Product Subgroup:
Pipe Fittings
Product Size:
1"

A.Y. McDonald 6133T-1-1/4 – Frequently Asked Questions

1) What sizes does the A.Y. McDonald 6133T compression coupling connect?
The 6133T joins 1-1/4 inch CTS (copper tube size) tubing on one end to 1 inch IPS (iron pipe size) pipe on the other, so it both couples and steps the size in one fitting. Order it as model 6133T-1-1/4, cross referenced by McDonald as 4130-761.
2) Can I use the 6133T coupling on polyethylene water service tubing, or is it copper only?
Both. The pack joint compression end is made for 1-1/4 inch CTS tubing, whether that is CTS polyethylene service tubing or copper. The other end takes 1 inch IPS pipe.
3) Do I need to solder or solvent weld this brass coupling?
No heat and no glue. It is a compression connection, assembled in the field by tightening the nut down on the tubing, which is why it works in a trench or behind a wall where an open flame is not an option.
4) I have 1-1/4 inch poly service going to 1 inch galvanized. Is this the right fitting, or do I need a same-size coupling?
That is exactly the pairing the 6133T is for, since it reduces 1-1/4 inch CTS to 1 inch IPS within the coupling itself. If both ends of your run are the same standard and size, this is the wrong part, you want a straight CTS x CTS or IPS x IPS coupling instead.
5) Is the A.Y. McDonald 6133T rated for direct burial on an underground water service line?
Yes, it is built for underground water service connections and below grade or behind the wall transitions between CTS tubing and IPS pipe. Typical use is new service rough-in and service line repair or replacement work.
6) What is the difference between CTS and IPS, and why do I need a transition coupling?
CTS is copper tube size and IPS is iron pipe size, and the two standards do not share outside diameters, so a straight coupling will not bridge them. The 6133T handles that in one fitting, taking 1-1/4 inch CTS tubing on the compression end and 1 inch IPS pipe on the other, instead of stacking an adapter and a coupling.
7) What part number should I give my supplier for the A.Y. McDonald CTS to IPS compression coupling?
Manufacturer part number 6133T-1-1/4, also carried under McDonald reference 4130-761. The catalogued size on the IPS side is 1 inch.
8) Do I need special tools to install the 6133T coupling?
No specialized tooling or heat-based joining is needed. It assembles with the compression nut and gasket in the field, so a wrench and clean, deburred tubing is the extent of it.
How fast can I get the A.Y. McDonald 6133T-1-1/4 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 A.Y. McDonald 6133T-1-1/4 come with a warranty?
Absolutely. The A.Y. McDonald 6133T-1-1/4 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 A.Y. McDonald 6133T-1-1/4?
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 A.Y. McDonald 6133T-1-1/4 from ZenSupply?
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