The part number 236671, frequently associated with "G2 INTERNAL ADJ WHT", refers to a Pentair In-Floor (A&A) Gamma Series 2 Adjustable Flow Pop-Up Cleaning Head in White.

This is a crucial component of an in-floor pool cleaning system, designed to efficiently clean your pool by pushing debris towards the main drain or collection system.

Here's a detailed description:

• Product Type: In-Floor Pool Cleaning Head (Internal). This is the part that pops up from the pool floor to emit a jet of water.
• Brand/Series: Pentair In-Floor (formerly A&A Manufacturing) Gamma Series 2. The "G2" in the description indicates it's part of the Gamma Series 2, which is an enhanced version of the original Style 2 pop-up heads.
• Internal Adjustable Flow: The "INTERNAL ADJ" (Internal Adjustable) feature is a key improvement. It means this cleaning head has an adjustable nozzle that allows you to vary the flow rate of the water jet. This eliminates the need for separate high-flow or low-flow heads. Common flow rate options include 6, 12, 18, and 30 GPM (Gallons Per Minute) by rotating the internal orifice. This adjustability helps optimize cleaning for different areas of your pool.
• Color: "WHT" signifies that the cleaning head is White, designed to blend seamlessly with white or light-colored pool finishes.
• Enhanced Design: The Gamma Series 2 offers several improvements over previous versions, such as:
  • Bigger Locking Tab: Provides a more secure fit into existing Style 2 collars.
  • Improved Spring Mechanism: Allows the head to pop up fully even at lower pump RPMs, making it more suitable for use with Variable Speed Pumps (VSPs) which often run at lower speeds for energy efficiency.
• Compatibility: Designed to replace older QuickClean, JetClean, and TurboClean heads from A&A/Pentair in-floor systems.
• Function: When activated by the in-floor cleaning system's water valve, this head pops up and powerfully directs filtered water across the pool floor, walls, and steps, pushing dirt, debris, and leaves towards the main drain or debris collection system. This contributes to better circulation, more even chemical distribution, and a cleaner pool with less manual effort.

In summary, the Pentair In-Floor (A&A) Gamma Series 2 Adjustable Flow Pop-Up Cleaning Head (236671) in White is an advanced, internally adjustable component for automated in-floor pool cleaning systems, offering improved performance, energy efficiency compatibility, and easy flow customization.