5/8IN Quick Connect fittings by SunMaxx (Male)


The SunMaxx 5/8″ Solar Lineset to NPT Pipe Connector is a handy and essential accessory for your solar installations. Its robust build and easy connection provide a durable, reliable, and cost-effective solution, making your solar installation process smoother and more efficient.

SKU: FlowMaxx-A-QC-5/8INPF-3/4INMNPT-B Category:

How to order? 

  • Order online or contact sales team directly
  • 24-hour online order confirmation
  • SunMaxx Solar™: solar hot water equipment manufacturer
  • Availability and production lead times subject to production queue

Direct-from-Manufacturer Pricing

Experience the value and benefits of our manufacturer-direct pricing on all online listings. For wholesale and distribution inquiries, we encourage you to reach out to our office to receive a tailored offer that meets your needs.

Looking to connect with our office? Give us a call at 1-877-786-6299, and we'll be happy to assist you!


Product Description: The SunMaxx 5/8″ Solar Lineset to NPT Pipe Connector is crafted with robust brass material, custom-designed to seamlessly connect SunMaxx 5/8″ solar linesets with standard 3/4″ NPT pipes.


  • Constructed from sturdy brass for durability
  • Specifically designed to connect 5/8″ SunMaxx solar linesets with 3/4″ NPT pipes
  • Easy to connect and disconnect, providing a reusable solution
  • Requires channel locks or pipe wrenches for secure tightening

Product Highlights:

UL Listed and crafted in Poland with German design, this connector guarantees quality. It’s easy to connect and disconnect features, along with its reusable nature, make it an economical solution for connecting solar linesets with NPT pipes.

Advantages of FlowMaxx™ Quick Connect fittings

SunMaxx FlowMaxx™ Series saves time and money when installing hydronic or solar thermal systems.
  • NSF61 Certified and Listed for use with Potable Water
  • Compatible only with SunMaxx FlowMaxx stainless steel piping
  • Re-usable connections
  • Eliminates the need for having a union connection on piping connections

How does it work?

SunMaxx quick connect fittings are required to connect our solar insulated stainless steel piping to existing NPT connections.

What parts & accessories do I need?

Universal fittings (for FlowMaxx series piping). Easy to stock in your tech-van, less parts to inventory.

Videos how to install solar piping

Why SunMaxx Solar

Investing in a complete solar hot water kit from a single manufacturer is essential for ensuring the longevity and efficiency of your solar hot water system. A streamlined approach to sourcing components simplifies the process of installation, maintenance, and servicing.

By choosing a single manufacturer for your solar hot water kit, you can benefit from comprehensive documentation for service and maintenance. This approach helps prevent issues arising from improperly installed or maintained systems. Studies show that over 60% of solar hot water systems fail due to incorrect installation or lack of proper maintenance.

Purchasing a complete kit from one manufacturer guarantees compatibility between components and streamlined support from the provider. This ensures that you have access to knowledgeable experts who can address any concerns or questions related to your specific system. Furthermore, a single manufacturer can provide a unified warranty, eliminating the need to deal with multiple companies in case of any issues.

In summary, investing in a complete solar hot water kit from a single manufacturer is a wise decision for homeowners and businesses alike. It ensures smooth installation, proper maintenance, and reliable long-term performance, maximizing the return on your investment and providing a sustainable hot water solution.