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Pentair MasterTemp Heater Manifold Bypass Valve Kit | 77707-0001

Pentair SKU: 77707-0001
Pentair MasterTemp Heater Manifold Bypass Valve Kit | 77707 - 0001 - Heater Parts - img - 1
Pentair MasterTemp Heater Manifold Bypass Valve Kit | 77707-0001
Pentair MasterTemp Heater Manifold Bypass Valve Kit | 77707-0001
Pentair MasterTemp Heater Manifold Bypass Valve Kit | 77707-0001
Pentair MasterTemp Heater Manifold Bypass Valve Kit | 77707-0001
Pentair MasterTemp Heater Manifold Bypass Valve Kit | 77707-0001
Pentair MasterTemp Heater Manifold Bypass Valve Kit | 77707 - 0001 - Heater Parts - img - 1
Pentair MasterTemp Heater Manifold Bypass Valve Kit | 77707-0001
Pentair MasterTemp Heater Manifold Bypass Valve Kit | 77707-0001
Pentair MasterTemp Heater Manifold Bypass Valve Kit | 77707-0001
Pentair MasterTemp Heater Manifold Bypass Valve Kit | 77707-0001
Pentair MasterTemp Heater Manifold Bypass Valve Kit | 77707-0001
MasterTemp Heater Not sure it fits? See this part on the interactive diagrams MasterTemp HeaterMax-E-Therm Heater

Pentair MasterTemp Heater Manifold Bypass Valve Kit | 77707-0001

Pentair SKU: 77707-0001
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Questions about returns? View our return policy.
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Pentair 77707-0001 Manifold By-Pass Valve Kit

The Pentair 77707-0001 is a replacement by-pass valve kit designed for use with compatible pool and spa heaters including the MasterTemp® and Max-E-Therm® heater water systems. It helps maintain proper water flow and heater performance.

Key Features

  • Replacement valve kit to restore the manifold by-pass function in select pool/spa heaters.
  • Compatible with Pentair MasterTemp and Sta-Rite Max-E-Therm heater models that use the bypass valve.
  • Helps maintain correct bypass flow when the heater is running, ensuring efficiency and avoiding over-heating or excessive pressure drop.

Technical Specifications

  • Part Number: 77707-0001
  • Application: Manifold by-pass valve kit for specified heater water systems.

Installation & Compatibility Notes

Before servicing, shut off power to the heater, close incoming water valves and relieve system pressure. Remove the old by-pass valve assembly from the heater manifold, install the replacement kit ensuring correct seal and orientation, restore water flow and power, then verify proper operation of the heater with no leaks and normal temperature rise.

Maintenance Tips

  • Inspect the by-pass valve annually—if you notice irregular heater performance, pressure anomalies or flow restrictions it may be failing.
  • Keep this kit in your service parts inventory to quickly address bypass valve issues and reduce heater downtime.

Why Choose This Kit?

For pool service professionals, equipment suppliers and proactive homeowners, the Pentair 77707-0001 kit offers a direct replacement solution for critical bypass valve components. Ensuring the bypass valve functions properly helps extend heater life, maintain efficiency and promote reliable pool operation.

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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