Pentair ETi 400 High Efficiency Natural Gas Heater 400K 461113 Parts & Diagram
Replacement parts and exploded parts diagram for the Pentair ETi 400 High Efficiency Natural Gas Heater 400K (model 461113). Find the part on the diagram, then look for the same number (#) next to each part in the Available Parts list and add the parts you need to your cart.
Parts marked Alternate are compatible replacements from other manufacturers.
Other Parts on This Diagram
These parts are not listed for online purchase. Contact us with the diagram number and part number to order.
- #8 – 475989 – Spark Electrodes
- #12 – 475606 – Heat Exchanger Screws
- #15 – 475604 – Air Orifice
- #16 – 475973 – Heater Gasket Kit
- #21 – 475611 – ETI400 Latch Assy
- #23 – 475613 – ETI400 Inlet Plumbing Assy
- #25 – 475617 – ETI400 Exhaust Assy
- #26 – 42001-0056S – Max-E-Therm Terminal Board
- #27 – 32850-0099Z – 1.25A Max-E-Therm Firemans Switch Fuse (1.25 amps)
- #31 – 475618 – ETI400 Pressure Relief Valve
- #40 – 38404-4097S – .75" Service Union
- #42 – U178-920P – .25"MPT Drain Plug W/ Oring
- #42 – 072555 – #2-112 Nitrile O-Ring Cover
- #42 – U178-920P – 1/4" NPT Drain Plug Assembly With O-Ring
- #42 – 25010-0200 – Pld/Ptm AIR Relief Valve Assy
Please confirm your model number matches your existing equipment before ordering.
GTIN:
SKU: DIAGRAM-461113
Brand: Pentair
Price range
$4.77 - $4,150.94
Tax and shipping are calculated at checkout.

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Key Features
- Exploded parts diagram for the Pentair ETi 400 High Efficiency Natural Gas Heater 400K (model 461113)
- 27 replacement parts available to order online
- Diagram number shown next to every part for easy matching
- Genuine Pentair parts plus compatible alternates
- Add multiple parts to your cart at once