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Pentair Drain Plug with O-Ring U178-920PZ – for Heaters, Filters & Pumps
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Pentair Drain Plug with O-Ring U178-920PZ – for Heaters, Filters & Pumps

U178-920PZ
Pool Equipment Drain Plug Replacement Pentair Drain Plug with O-Ring Replacement drain plug and O-ring for compatible Pentair and Sta-Rite pool heaters, Triton II sand filters and Max-E-Pro pumps. Warranty Information 1-Year Manufacturer Warranty Ultimate Pools is your first point of contact for compatibility verification, installation guidance, and warranty support.... Read More
$11.99 $9.99
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$9.99
Pool Equipment Drain Plug Replacement

Pentair Drain Plug with O-Ring

Replacement drain plug and O-ring for compatible Pentair and Sta-Rite pool heaters, Triton II sand filters and Max-E-Pro pumps.

Warranty Information

1-Year Manufacturer Warranty

Ultimate Pools is your first point of contact for compatibility verification, installation guidance, and warranty support.

The Pentair Drain Plug with O-Ring (U178-920PZ) is a replacement drainage and sealing component for compatible Pentair and Sta-Rite pool and spa equipment. It is designed for specified MasterTemp, Max-E-Therm and ETi heaters, Triton II sand filters and Max-E-Pro pool pumps. Additional part number references include U178940P and U178-940P.

The drain plug allows compatible equipment to be drained during servicing, maintenance or winterization. Its included O-ring helps seal the drain opening when the plug is installed, reducing the risk of water leakage at the connection. Replacing a worn, damaged or missing drain plug or O-ring helps maintain the equipment's intended drainage and sealing function.

Key Features

Drain Plug with O-Ring
Includes the replacement drain plug and O-ring for sealing compatible equipment drain openings.
Helps Prevent Water Leakage
The O-ring creates a seal between the drain plug and compatible equipment connection.
Heater Compatibility
Fits specified Pentair MasterTemp and ETi heaters, as well as Sta-Rite Max-E-Therm models.
Sand Filter Compatibility
Designed for listed Pentair Triton II sand filters, including TR40, TR50, TR60, TR100 and TR140.
Max-E-Pro Pump Compatibility
Supports specified Sta-Rite Max-E-Pro TEFC, standard efficiency and two-speed pump models.
Maintenance & Winterization
Provides access to the drain opening during equipment servicing, seasonal maintenance and winterization.

Compatibility & Fitment

Compatible with the following Pentair and Sta-Rite equipment models:

  • Pentair ETi Heaters: 461112, 461113
  • Pentair MasterTemp Heaters: 460730, 460731, 460732, 460733, 460734, 460735, 460736, 460737, 460792, 460793, 460805, 460806
  • Pentair Triton II Sand Filters: TR40, TR50, TR60, TR100, TR140
  • Sta-Rite Max-E-Pro Standard Efficiency Pumps: P6E6C-204L, P6E6D-205L, P6R6D-205L, P6E6E-206L, P6EA6E-205L, P6RA6E-205L, P6R6E-206L, P6EA6F-206L, P6RA6F-206L, P6R6F-207L, P6E6F-207L, P6EAA6F-216L, P6RAA6F-216L, P6E6G-208L, P6EA6G-207L, P6RA6G-207L, P6R6G-208L, P6EAA6G-208L, P6E6H-209L, P6R6H-209L
  • Sta-Rite Max-E-Pro TEFC Pumps: 348150, 348151, 348152, 348153
  • Sta-Rite Max-E-Pro Two-Speed Pumps: P6RA6YF-206L, P6RA6YG-207L
  • Sta-Rite Max-E-Therm Heaters: SR200NA, SR200HD, SR200LP, SR333NA, SR333HD, SR333LP, SR400NA, SR400HD, SR400LP

Compatibility may vary by production year, configuration and installation. Verify your exact model and part number before ordering.

Applications

  • Replacement of worn, damaged or missing equipment drain plugs
  • Pentair MasterTemp, ETi and Sta-Rite Max-E-Therm heater servicing
  • Pentair Triton II sand filter maintenance
  • Sta-Rite Max-E-Pro pool pump maintenance
  • Seasonal pool equipment draining and winterization
  • Replacement of a damaged or deteriorated drain plug O-ring

Verify the existing drain plug and equipment model before ordering. Always shut down equipment and relieve system pressure before removing a drain plug.

Specifications

SKU U178-920PZ
Alternate Part Numbers U178940P, U178-940P
Brand Pentair / Sta-Rite
Product Type Equipment Drain Plug with O-Ring
Included Components
  • Drain Plug
  • O-Ring
Application Pool and spa heater, filter and pump drainage, sealing and maintenance
Compatibility Selected Pentair MasterTemp and ETi heaters, Sta-Rite Max-E-Therm heaters, Pentair Triton II TR40/TR50/TR60/TR100/TR140 sand filters and Sta-Rite Max-E-Pro TEFC, standard efficiency and two-speed pumps. See Compatibility & Fitment for exact models.
Warranty 1-Year Manufacturer Warranty
Final Sale Yes

Frequently Asked Questions

What is included with the Pentair U178-920PZ?
The replacement includes a drain plug and O-ring for sealing compatible equipment drain connections.
Does U178-920PZ fit Pentair MasterTemp and Sta-Rite Max-E-Therm heaters?
Yes. It is compatible with the specified Pentair MasterTemp and Sta-Rite Max-E-Therm heater models listed in the Compatibility & Fitment section. It is also listed for Pentair ETi heater models 461112 and 461113.
Which Pentair Triton II sand filters are compatible?
The listed compatible models are TR40, TR50, TR60, TR100 and TR140.
Can this drain plug be used with Sta-Rite Max-E-Pro pumps?
Yes. It is listed for specified Max-E-Pro TEFC, standard efficiency and two-speed pump models. Verify the exact pump model before ordering.
What is the warranty and return policy?
The U178-920PZ includes a 1-year manufacturer warranty and is a final sale replacement part. Confirm compatibility before purchasing.

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