Pentair Manifold Internals 400K | 77707-0209
Pentair
SKU: 77707-0209
Pentair 77707-0209 Manifold Internals 400K
Part Number: 77707-0209
Description
A comprehensive internal manifold replacement kit for 400,000 BTU pool heaters. Contains all necessary components to rebuild or restore the internal manifold assembly and restore the heater to full operational integrity.
Compatibility & Fitment
- Designed for use in 400 k BTU heater models including the Sta-Rite Max-E-Therm SR series and compatible Pentair/Sta-Rite heaters.
- Recommended when the internal manifold shows signs of corrosion, leaks at the combustion chamber, degraded seals, or during major heater service.
- Serves as an OEM replacement kit to prolong heater life and avoid full heater replacement.
Features & Specifications
- Kit includes manifold seals, gaskets, O-rings and internal components tailored for the 400 k BTU manifold assembly.
- Factory-designed to restore full performance of the heater’s water/gas manifold interface and internal components.
- Packaged as a service kit—designed for technician installation during heater service intervals.
Installation Notes
Shut off power and the fuel supply to the heater. Drain and isolate the water plumbing. Remove the heater access panels and old manifold internals. Clean mating surfaces and inspect adjacent components for damage or corrosion. Install the new 77707-0209 kit components following manufacturer torque and sequence, reassemble the heater, refill and purge the system, then restore power and gas. Monitor for proper ignition, water flow and leak-free operation.
Maintenance Tip
During the annual heater service, inspect the manifold area for evidence of corrosion, sealing failure, or water leakage. If any irregularities are found, replacing the manifold internals with this kit will prevent unexpected heater shutdowns and extend operational life.
Questions about returns? View our return policy.
Hours Of Operation:
Monday - Friday: 7:00 am to 5:00 pm Phoenix Time
Saturday: 8:00 am to 2:00 pm
Sunday: Closed
- We do not ship on Saturday or Sunday.
- Orders totaling more than $300 will require signature confirmation upon delivery.
- We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
- Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
- Expedited shipping options are available at checkout.
Return Policy:
- Products that are received damaged will receive a refund in store credit.
- Most products are eligible for return within 30 days of receipt, except where noted below.
- To initiate a return, please complete an RMA form prior to sending your item back.
- Original shipping costs are non-refundable and will be deducted from the return credit.
- Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
- Some returns will be charged an automatic 15% restocking fee.
- We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
- Please complete the return form to receive your RMA number and return shipping label.
- Chemical products are not eligible for return under any circumstances.
- The Pentair Colorsync 618031 is not eligible for return.
- Pool cleaners are not eligible for return.
- Opened seals and o-rings are not eligible for return.
- Capacitors are not eligible for return.
- Plastic popup tools are not eligible for return.
- Automation components and circuit boards are not eligible for return.
- If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
- Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.
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