Sioux Chief 633X18 3/4" PEX x ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$23.51
Sioux Chief 633X18 3/4" PEX x 3/4" FIP Dielectric Swivel Connector, No-Lead Brass

Sioux Chief 633X18 3/4" PEX x 3/4" FIP Dielectric Swivel Connector, No-Lead Brass

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Model: 633X18

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

$23.51
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Sioux Chief 633X18 3/4" PEX x 3/4" FIP Dielectric Swivel Connector, No-Lead Brass

The Sioux Chief 633X18 is a 3/4" PEX x 3/4" FIP dielectric swivel connector built from Type L copper tube, designed to join PEX tubing to threaded fixture or valve connections without restricting flow. The brass FIP swivel nut is NL/DZR rated and ships with its own gasket, and the fitting uses a lead-free solder joint at the copper-to-brass transition. This connector is also available with an integral 600 WOG full port ball valve for jobs that need shutoff at the connection point.

Key Features

  • Trade Size: 3/4" PEX x 3/4" FIP swivel connection for tying PEX tubing runs into threaded fixture or valve ports.
  • Full-Flow Design: Dielectric fitting construction offers no restriction through the connection, maintaining full flow at the transition.
  • Type L Copper Tube: Fitting body is made from Type L copper tube for a solid, code-familiar rough-in connection.
  • Brass FIP Swivel Nut: Includes its own gasket for a sealed threaded connection; do not use pipe dope on the FIP swivel threads.
  • No-Lead / DZR Brass: NL/DZR swivel nut construction paired with a lead-free solder joint at the copper-to-brass joint.
  • Full-Port Option: Also offered with a 600 WOG full port ball valve built into the fitting for in-line shutoff.

Certifications & Compliance

  • No-Lead (NL) Brass Swivel Nut
  • Dezincification Resistant (DZR) Brass
  • Lead-Free Solder Joint

Technical Specifications

  • Connection: 3/4" PEX x 3/4" FIP Swivel
  • Body Material: Type L Copper Tube
  • Swivel Nut Material: NL/DZR Brass
  • Country of Origin: United States
  • Packaging: 25 EA per carton

Typical Applications

  • Rough-In PEX Water Supply Connections
  • Water Heater and Fixture Supply Tie-Ins
  • Residential and Commercial Plumbing Installations
  • Potable Water Distribution Piping
  • New Construction and Remodel Plumbing

Why Sioux Chief?

Sioux Chief builds this swivel connector from Type L copper tube with a NL/DZR brass swivel nut and a lead-free solder joint, giving plumbers a full-flow, dielectric transition between PEX tubing and threaded connections. The included gasket on the FIP swivel nut and the full-port ball valve option make the 633X18 a practical, code-aware choice for rough-in supply connections.

Product Specs

Product Type:
Swivel Connector
Standards:
No-Lead
Country Of Origin:
United States
Department:
Plumbing
Product Group:
Rough-In and Supports
Product Subgroup:
Fittings and Valves
Product Material:
Copper
Product Size:
3/4"

Sioux Chief 633X18 – Frequently Asked Questions

1) What does the Sioux Chief 633X18 connect to on each end?
The 633X18 is a 3/4 inch PEX end on one side and a 3/4 inch FIP swivel nut on the other, so it ties a 3/4 inch PEX supply run into a threaded male port on a fixture stop, valve, or water heater nipple. The body is Type L copper tube with the brass swivel nut on the threaded end.
2) Do I need pipe dope or Teflon tape on the FIP swivel nut?
No. The brass FIP swivel nut ships with its own gasket and seals on that gasket, so sealant on those threads is not used. Sioux Chief specifically says not to use pipe dope on the FIP swivel threads. Just tighten the nut against the gasket.
3) Is this connector safe for potable water and lead-free plumbing code?
The swivel nut is no-lead (NL) brass and the copper-to-brass joint uses lead-free solder, so it is built for potable water distribution. The brass is also dezincification resistant (DZR), which matters on aggressive or high-chloride water where standard brass can fail.
4) Will a dielectric connector like this cut my flow rate at the water heater?
No. The 633X18 is built as a full-flow dielectric fitting, so there is no restriction through the connection and the 3/4 inch bore stays 3/4 inch across the transition. That is the difference between this and a dielectric union or nipple that necks down inside.
5) Can I get this same PEX to FIP connector with a shutoff built in?
Yes, Sioux Chief offers this connector with an integral 600 WOG full port ball valve, so you get shutoff right at the connection instead of adding a separate valve upstream. If you do not need isolation at that point, the plain 633X18 is the straight connector version.
6) Is the Sioux Chief 633X18 a crimp or expansion PEX fitting?
The PEX end is a copper tube stub sized for 3/4 inch PEX, so it is made up with your standard PEX ring and tool at that end. The body is Type L copper tube, not a plastic insert fitting, so the copper leg can be supported and strapped like any copper rough-in.
7) How many Sioux Chief 633X18 connectors come in a carton?
They ship 25 each per carton, which suits a multi-family or tract rough-in where you are hitting the same 3/4 inch PEX to threaded tie-in at every unit. They are made in the United States.
How fast can I get the Sioux Chief 633X18 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 Sioux Chief 633X18 come with a warranty?
Absolutely. The Sioux Chief 633X18 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 Sioux Chief 633X18?
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 Sioux Chief 633X18 from ZenSupply?
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