The Pentair U178-920P drain plug with O-ring is a factory-original replacement engineered for Pentair MasterTemp and Sta-Rite Max-E-Therm gas heaters, as well as a broad range of Sta-Rite pumps and multi-port valves. Shipped with a matched O-ring for immediate installation, this plug forms a secure, watertight barrier at the heater or pump drain port, guarding against water loss and potential internal corrosion. Its heavy-duty construction withstands the heat, chemical exposure, and pressure variations typical of gas heater and pump environments, delivering reliable sealing performance throughout the life of your equipment.

Key Benefits

• Precision-Matched Fit: Manufactured to Pentair's original specifications for MasterTemp and Sta-Rite Max-E-Therm gas heaters, guaranteeing accurate threading and flush seating at the drain port.
• O-Ring-Sealed Security: The bundled O-ring delivers an airtight, drip-free closure that withstands operating pressures and temperature swings common in gas heating systems.
• Heat and Chemical Resilience: Built from materials rated to endure high temperatures, chlorinated water, and continuous pressure cycling without cracking or degrading.
• Hassle-Free Replacement: Threads in by hand or with basic tools, allowing homeowners and technicians to complete the swap in minutes with no plumbing modifications.
• Simplified Seasonal Upkeep: An affordable, proactive replacement during routine servicing helps prevent unexpected leaks that can sideline your heater during peak swim season.
• Protection Against Water Damage: A tight, dependable seal minimizes the risk of moisture reaching sensitive heater internals, reducing the chance of corrosion-related malfunctions.
• Budget-Friendly Longevity: Replacing a worn drain plug is one of the most cost-effective ways to extend equipment life and avoid expensive emergency repairs.

What's Included

• Drain Plug
• Drain Plug O-Ring

Compatibility

• Pentair MasterTemp Heaters
• Pentair ETI 400 Heaters
• Sta-Rite Max-E-Therm Heaters
• Sta-Rite Max-E-Pro Pumps
• Sta-Rite Max-E-Glas / Dura-Glas Pumps
• Sta-Rite Max-E-Glas II / Dura-Glas II Pumps
• Sta-Rite Dyna-Pro / Dyna-Pro E Pumps
• Pentair/Sta-Rite Dynamo Pumps
• Sta-Rite ABG Series Pumps
• Sta-Rite JWP Series Pumps
• Sta-Rite Dyna-Wave Pumps
• Sta-Rite Dyna-Jet Pumps
• Sta-Rite Multi-Port Valves (Models 18202-0150, 18202-0150H, 18201-0200, 18201-0200H, 18201-0300 and 18201-0250)

Specifications

• Brand: Pentair
• Part Number: U178-920P

SEO Tags

pentair pentair drain plug with o-ring for mastertemp sta-rite max-e-therm gas heaters
U178-920P
pentair drain plug o-ring mastertemp