


77707-0113 Air Orifice Kit for MasterTemp & Max-E-Therm 400 Pool Heaters | Pentair
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
77707-0113 Air Orifice Kit for MasterTemp & Max-E-Therm 400 Pool Heaters | PentairRestore proper combustion performance in your Pentair pool heater with this genuine Pentair Air Orifice Kit. Built with factory spec precision, the orifices in this kit carefully control the air to gas mixture feeding into the burner, promoting efficient heat output and consistent temperature delivery. When your heater's orifices wear or become obstructed, combustion suffers and heating times increase. This direct fit kit returns your Mastertemp or
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- Express: 1-2 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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4.8 ★★★★★
Based on 721 reviews
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Product Reviews
★★★★★ 5
Great
All pieces cut to perfection, went together perfectly
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 22, 2023
★★★★★ 1
Some of the components are plastic
This is not a heavy duty application what so ever . One of the flanges broke . We do not recommend this product
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Reviewed in the United States on July 5, 2024
★★★★★ 2
Quality control lacking
One tee conector was missing. Nothing avaliable locally that fits.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 13, 2025
★★★★★ 1
It doesn’t stay in
The pipe keeps coming out. Not worth the money. Not sturdy to hold a top table.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 20, 2024
★★★★★ 2
Good finish, poor hardware.
Set screws are poor quality and are sometimes powdercoated on the exposed threads. Leads to striped hex sockets and inability to tighten properly.
Durable finish as evidenced by no visible damage after throwing parts across the shop in frustration.
Ended up running self tapping screws thru parts to complete assembly.
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Reviewed in the United States on February 26, 2024
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