Pentair Manual Air Relief Assembly for FNS, Nautilus Plus, SM & SMBW 4000 Filters — Part 273550

The genuine Pentair 273550 Manual Air Relief Assembly is purpose-built to safely release trapped air from your pool or spa filter tank, protecting against excessive pressure buildup and promoting steady filtration output. This assembly incorporates a manual air release valve along with a pressure gauge and is specifically compatible with Pentair FNS, Nautilus Plus, SM, and SMBW 4000 series filters. Manufactured from tough, chemical-resistant materials...

Pentair Master Service Repair Kit | MasterTemp & Max-E-Therm Water/Electrical System | 461100

The Pentair Master Service Package Repair Kit 461100 is an all-encompassing, factory-spec parts collection engineered to revitalize Pentair MasterTemp and Max-E-Therm pool heaters from the inside out. This comprehensive package bundles together essential water-side and electrical components including the ignition control module, thermistors, high-limit switches, transformer, pressure and airflow switches, control board, stack flue sensor, automatic gas shutoff switches, and a manifold bypass valve kit....

Pentair MasterTemp & Max-E-Therm 140° Automatic Gas ShutOff Switch | 42002-0025S | Swimables SW-41-025

The Swimables SW-41-025 is a 140F automatic gas shutoff switch engineered for direct integration into the electrical systems of Pentair MasterTemp and Sta-Rite Max-E-Therm pool and spa heaters. This switch functions as a thermal safety device that continuously monitors internal heater temperature. If the temperature climbs beyond 140 degrees Fahrenheit, the switch immediately cuts the gas supply, stopping combustion before the situation can escalate into...

Pentair MasterTemp & Max-E-Therm Heater Air Flow Switch 42001-0061S by Swimables | SW-41-061

The Swimables SW-41-061 Air Flow Switch is a critical safety and ignition component for Pentair MasterTemp and Max-E-Therm pool and spa heaters. This switch monitors the pressure differential across the air metering orifice to verify adequate combustion airflow before ignition can proceed. Once the blower generates sufficient air movement, the AFS closes its contacts, completing the circuit to the hot surface igniter (HSI) and initiating...

Pentair MasterTemp & Max-E-Therm Heater Drain Plug With O-Ring | U178-920P | SW-41-178

Protect your pool heating investment with the Swimables SW-41-178 drain plug and O-ring set, purpose-built for Pentair MasterTemp and Sta-Rite Max-E-Therm gas heaters. This critical replacement component forms a robust, leak-proof barrier that prevents water from escaping the heater housing, safeguarding both system efficiency and operational safety. The accompanying O-ring amplifies sealing performance for added peace of mind. Widely trusted for its exact-fit engineering and...

Pentair MasterTemp & Max-E-Therm Heater Manifold Bypass Valve 77707-0001 | Swimables SW-41-001

Keep your pool heater running at its best with the Swimables Pentair Manifold Bypass Valve SW-41-001, purpose-built for MasterTemp and Max-E-Therm heater systems. This valve serves a critical function in managing water flow through the heater, redirecting water as needed to maintain peak heating performance and energy efficiency. Constructed from premium, long-wearing materials, the SW-41-001 is engineered to handle the corrosive conditions and repeated cycling...

Pentair MasterTemp & Max-E-Therm Heater Manifold O-Ring Kit 77707-0120 | Swimables SW-41-120

Protect your heater from costly leaks with the Swimables Manifold O-Ring Kit SW-41-0120, specifically made for MasterTemp and Max-E-Therm heater systems. This comprehensive kit provides every O-ring required to establish a watertight, reliable seal on the manifold assembly, keeping your heater functioning at peak efficiency. Each O-ring is manufactured from premium, heat- and chemical-resistant materials capable of enduring the harsh demands of pool and spa...

Pentair MasterTemp & Max-E-Therm Heater Thermal Regulator 38000-0007S | Swimables SW-41-007

Restore precise heat control to your pool or spa with the Swimables Thermal Regulator SW-41-007, supplied with an integrated spring clip for straightforward installation. Purpose-built to fit Pentair Sta-Rite Max-E-Therm pool and spa heaters, this component also works seamlessly with Pentair MasterTemp units, giving you broad compatibility across popular heater lines. By governing the heat exchanger's output temperature, this regulator keeps your water at the...

Pentair MasterTemp & Max-E-Therm Heater Thermistor 42001-0053S | Swimables SW-41-053

The Swimables Thermistor SW-41-053 is the sensor behind the temperature reading shown on your heater's control panel. When the display begins reporting abnormally high temperatures, that is a clear signal that this component has failed and needs replacement. Because the thermistor is a non-resettable part, the only remedy is a fresh unit. Compatible with most Pentair MasterTemp, Sta-Rite Max-E-Therm, and ETI 400 Natural Gas swimming...

Pentair MasterTemp & Max-E-Therm Heater Water Pressure Switch - 42001-0060S / SW-41-060

The Pentair Water Pressure Switch, model SW-41-060, is purpose-built for use with MasterTemp and Max-E-Therm pool and spa heaters. This vital safety component continuously tracks water pressure within the heating system to ensure the unit operates within safe parameters. Constructed from dependable, long-lasting materials, the pressure switch delivers consistent performance season after season. It serves as a frontline defense against overheating and potential heater damage,...

Pentair MasterTemp & Max-E-Therm Membrane Pad 472610Z / 42002-0029Z | Swimables SW-41-029

Bring your heater's control panel back to life with the Swimables Switch Membrane Pad SW-41-029, a premium replacement part built for Pentair MasterTemp¨ and Sta-Rite Max-E-Therm¨ pool and spa heaters. This membrane pad directly replaces Pentair part numbers 472610Z and 42002-0029Z, reviving the touch interface so you can precisely adjust heater settings with confidence. Engineered for long-term durability and simple installation, the SW-41-029 drops right...

Pentair MasterTemp & Max-E-Therm Stack Flue Sensor — 42002-0024S | SW-41-024

The Swimables SW-41-024 stack flue sensor is a critical safety device for Pentair MasterTemp and Max-E-Therm pool and spa heaters. It continuously monitors exhaust gas temperature and triggers an automatic heater shutdown when flue gases reach 480° F (249° C), preventing dangerous overheating conditions. Engineered to cap flue gas output at a maximum of 500 degrees Fahrenheit, the sensor provides an essential thermal safeguard for...

Pentair MasterTemp & Max-E-Therm Thermal Regulator Kit 77707-0010 | Swimables SW-41-010

Inside every Pentair pool heater, a thermal regulator paired with an internal bypass governs water movement through the heat exchanger, keeping outlet temperatures exactly where they should be. The heater's operator control panel board assembly sits atop the unit for convenient access. This complete Swimables Thermal Regulator Kit is precision-engineered for Pentair Sta-Rite Max-E-Therm pool and spa heaters and also pairs perfectly with Pentair MasterTemp...

Pentair MasterTemp & Max-E-Therm Water Pressure Switch — Part 42001-0060S

Safeguard your pool or spa heater with the genuine Pentair Water Pressure Switch, part number 42001-0060S. This factory-original safety sensor continuously monitors water pressure inside MasterTemp and Max-E-Therm heaters, verifying that adequate flow is present before allowing the burner to ignite. If pressure drops below the required level, the switch immediately shuts down the heating cycle to prevent dry firing and heat exchanger damage. Constructed...

Pentair MasterTemp 125 Heater Manifold Kit – OEM Replacement Assembly | 474972

The Pentair 474972 Manifold Kit is a factory-specified replacement designed to restore correct water routing inside your Pentair MasterTemp 125 pool heater. The manifold directs incoming and outgoing water through the heat exchanger at the flow rates and pressures the heater requires for safe, efficient combustion and consistent temperature output. Swapping a worn or cracked manifold with this genuine Pentair kit helps eliminate flow restrictions,...

Pentair MasterTemp Direct Air Intake Duct – Heater Replacement Part | 461031

The Pentair 461031 Direct Air Intake Duct Kit provides indoor MasterTemp pool heater installations with a dedicated pathway for drawing clean outside combustion air through a 3-inch PVC duct routed vertically or horizontally to suit your equipment room layout. Shipped as a complete OEM package, the kit contains a heater panel cut-out, air orifice adapter, a section of 3" PVC pipe, a union fitting, and...

Pentair MasterTemp Heater Connector Tube O-Ring by Aladdin | U9-226 | O-49

The Aladdin O-49 Connector Tube O-Ring is manufactured to fit Pentair MasterTemp heater systems. Positioned at the junction where the heater manifold meets the connector tube, this gasket forms a reliable, water-resistant barrier that guards against drips and sustains steady heater function. Produced from a premium elastomer engineered for heat and chemical resistance, the O-49 delivers dependable sealing across many heating cycles. Incorporating this o-ring...

Pentair Max-E-Glas & Dura-Glas Pump Diffuser – 0.75HP to 2.5HP | C1-200PA

Restore proper hydraulic performance in your pool or spa pump with the C1-200PA diffuser from Pentair. This factory-specification component channels water precisely through the impeller chamber, helping Max-E-Glas and Dura-Glas pumps rated from 0.75HP to 2.5HP operate at their intended efficiency. Key Benefits Optimizes Internal Water Flow: Directs water through the impeller housing to create uniform pressure distribution and smoother pump cycling. Covers 0.75HP through...

Pentair Max-E-Glas & Dura-Glas Pump Lid by CMP | C3-139P1 | 25304-000-020

Get clear sightlines into your pump housing with the CMP Pump Lid 25304-000-020, a transparent replacement lid built for Pentair Max-E-Glas and Dura-Glas pumps. Measuring 6-3/4 inches in outside diameter with 6-inch threads, this lid threads on for a tight, secure closure every time. It directly replaces the Sta-Rite C3-139P1 part, delivering dependable compatibility and robust performance. The see-through design means you can visually verify...

Pentair Metal Flue Collar 4" x 6" for MasterTemp & Max-E-Therm | Part 77707-0076

The Pentair Metal Flue Collar 77707-0076 is a factory-original replacement component engineered to facilitate safe and effective exhaust venting in Pentair MasterTemp and Sta-Rite Max-E-Therm pool and spa heaters. Measuring 4 inches by 6 inches, this robust collar establishes a firm, heat-tolerant junction between the heater unit and the exhaust vent pipe. Packaged with high-temperature silicone adhesive and mounting screws, it forms a trustworthy seal...