• Manufacturer: Pentair
• Manufacturer part number: 471083
• Product type: Heater Quick-Flange II connection kit
• Connection: 1-1/2-inch threaded connection
• Common configuration: 1-1/2-inch MPT x 1-inch
• Application: Pool and spa heater plumbing
• Condition: OEM legacy replacement part
• Product status: Discontinued

Pentair identifies part 471083 as the Quick-Flange II Kit for the 1-1/2-inch threaded connection used with:

• Pentair MiniMax 75 heaters
• Pentair MiniMax 100 heaters

The Quick-Flange II Kit creates the connection point between the pool heater manifold and the external circulation plumbing. A correctly matched flange helps maintain a secure, serviceable plumbing connection at the heater inlet and outlet.

This part is intended for threaded plumbing configurations. It should not be confused with the separate Quick-Flange kit designed for a 2-inch slip connection.

1. Turn off electrical power and gas supply to the heater.
2. Shut down the circulation pump and relieve system pressure.
3. Confirm the heater model and original Pentair part number.
4. Verify that the existing plumbing uses a 1-1/2-inch threaded connection.
5. Inspect the heater manifold, seals, and connection surfaces for damage.
6. Have the connection installed and pressure-tested by a qualified pool or gas-heater technician.

Installation requirements can vary by heater configuration and local code. Do not operate a heater with leaking, damaged, or improperly supported plumbing connections.

Pentair 471083 is discontinued. No direct replacement is identified on this product page.

Before replacing the complete heater, a qualified pool professional may be able to evaluate the existing manifold, plumbing size, thread type, seals, and available connection options. Any alternative must be confirmed for pressure rating, temperature exposure, dimensional fit, and compatibility with the heater.

Is Pentair 471083 still available?

No. Pentair 471083 has been discontinued and is no longer available through Aqua Terra Backyard.

What heaters use the 471083 Quick-Flange II Kit?

Pentair lists the kit for MiniMax 75 and MiniMax 100 heaters requiring a 1-1/2-inch threaded connection.

Is this the same as the 2-inch slip Quick-Flange kit?

No. Part 471083 is identified for a 1-1/2-inch threaded connection. Pentair used a separate Quick-Flange configuration for 2-inch slip plumbing.

Can a similar-looking heater flange be substituted?

Not based on appearance alone. The thread size, manifold interface, sealing method, pressure rating, and installed dimensions must all be confirmed.

Should the entire heater be replaced?

Not automatically. A qualified technician should first inspect the existing flange, manifold, seals, and plumbing to determine whether a safe repair or compatible connection solution is possible.