Skip to content
Contact Us 866-837-0401
Skip to product information
HeatMaster RhinoFlex cut away
HeatMaster RhinoFlex cut away
Description

*Priced Per Foot*

With our Dual Insulated PEX Pipe - 1 1/4"ID Direct Burial - for Outdoor Wood Boilers, Geothermal, & other Liquid Transfers - Rhinoflex, you can enjoy exceptional efficiency and value. Say goodbye to wasted heat and hello to cost savings! Our pre-insulated PEX pipe is specifically designed to minimize heat loss or gain during liquid transfer. Whether you're transferring heated water from a wood, pellet, chip, or biomass outdoor boiler to individual homes or additional structures, our product delivers reliable performance. Not only that, but it's also perfect for district or community heating systems, industrial processing facilities, or even cold liquid transfer systems. Available in various sizes, including ¾", 1", 1-¼", and 1-1/2", our Dual Insulated PEX Pipe is a game-changer when it comes to efficient liquid transfer. Upgrade your system today and experience the benefits for yourself!

Rated for water @ 204Deg F

Sizes Available
Rhinoflex pre-insulated single carrier pipe is available in sizes ranging from 3/4 inches to 5 1/2 inches. Pre-insulated dual carrier pipe is available in sizes from 1 inch to 2 1/2 inches. (Call for unlisted sizing 1-866-837-0401)
Guide
The Complete Guide to Rhinoflex Piping One of the most important decisions you can make after buying an outdoor furnace is the type of piping system that’s going to deliver your heat. Using the best insulated piping system with your outdoor furnace is a critical investment that will lessen heat loss and maximize efficiency. Flexible pre-insulated piping systems deliver heat right where you need it, providing constant comfort and energy independence. It’s why HeatMasterss recommends Rhinoflex®; it’s highly efficient, long-lasting, and economical. The Rhinoflex advantage is the fact it’s truly waterproof. Other types of piping use foam-wrapped PEX pipe inserted into a corrugated drain tile, which works great until the exterior shell becomes cracked or damaged. When the shell is damaged, water is able to penetrate causing insulating values to be dramatically reduced. The Rhinoflex outer shell and closed-cell foam core are virtually impervious to water. Learn more below.
Sizes Available
Rhinoflex pre-insulated single carrier pipe is available in sizes ranging from 3/4 inches to 5 1/2 inches. Pre-insulated dual carrier pipe is available in sizes from 1 inch to 2 1/2 inches. (Call for unlisted sizing 1-866-837-0401)
Guide
The Complete Guide to Rhinoflex Piping One of the most important decisions you can make after buying an outdoor furnace is the type of piping system that’s going to deliver your heat. Using the best insulated piping system with your outdoor furnace is a critical investment that will lessen heat loss and maximize efficiency. Flexible pre-insulated piping systems deliver heat right where you need it, providing constant comfort and energy independence. It’s why HeatMasterss recommends Rhinoflex®; it’s highly efficient, long-lasting, and economical. The Rhinoflex advantage is the fact it’s truly waterproof. Other types of piping use foam-wrapped PEX pipe inserted into a corrugated drain tile, which works great until the exterior shell becomes cracked or damaged. When the shell is damaged, water is able to penetrate causing insulating values to be dramatically reduced. The Rhinoflex outer shell and closed-cell foam core are virtually impervious to water. Learn more below.

Rhino Flex - Direct Bural Dual Insulated PEX Pipe

Regular price $18.00

RFLX3-4

  • 3/4" ID
  • 1" ID
  • 1 1/4" ID
Info
Description

*Priced Per Foot*

With our Dual Insulated PEX Pipe - 1 1/4"ID Direct Burial - for Outdoor Wood Boilers, Geothermal, & other Liquid Transfers - Rhinoflex, you can enjoy exceptional efficiency and value. Say goodbye to wasted heat and hello to cost savings! Our pre-insulated PEX pipe is specifically designed to minimize heat loss or gain during liquid transfer. Whether you're transferring heated water from a wood, pellet, chip, or biomass outdoor boiler to individual homes or additional structures, our product delivers reliable performance. Not only that, but it's also perfect for district or community heating systems, industrial processing facilities, or even cold liquid transfer systems. Available in various sizes, including ¾", 1", 1-¼", and 1-1/2", our Dual Insulated PEX Pipe is a game-changer when it comes to efficient liquid transfer. Upgrade your system today and experience the benefits for yourself!

Rated for water @ 204Deg F

Sizes Available
Rhinoflex pre-insulated single carrier pipe is available in sizes ranging from 3/4 inches to 5 1/2 inches. Pre-insulated dual carrier pipe is available in sizes from 1 inch to 2 1/2 inches. (Call for unlisted sizing 1-866-837-0401)
Guide
The Complete Guide to Rhinoflex Piping One of the most important decisions you can make after buying an outdoor furnace is the type of piping system that’s going to deliver your heat. Using the best insulated piping system with your outdoor furnace is a critical investment that will lessen heat loss and maximize efficiency. Flexible pre-insulated piping systems deliver heat right where you need it, providing constant comfort and energy independence. It’s why HeatMasterss recommends Rhinoflex®; it’s highly efficient, long-lasting, and economical. The Rhinoflex advantage is the fact it’s truly waterproof. Other types of piping use foam-wrapped PEX pipe inserted into a corrugated drain tile, which works great until the exterior shell becomes cracked or damaged. When the shell is damaged, water is able to penetrate causing insulating values to be dramatically reduced. The Rhinoflex outer shell and closed-cell foam core are virtually impervious to water. Learn more below.
Sizes Available
Rhinoflex pre-insulated single carrier pipe is available in sizes ranging from 3/4 inches to 5 1/2 inches. Pre-insulated dual carrier pipe is available in sizes from 1 inch to 2 1/2 inches. (Call for unlisted sizing 1-866-837-0401)
Guide
The Complete Guide to Rhinoflex Piping One of the most important decisions you can make after buying an outdoor furnace is the type of piping system that’s going to deliver your heat. Using the best insulated piping system with your outdoor furnace is a critical investment that will lessen heat loss and maximize efficiency. Flexible pre-insulated piping systems deliver heat right where you need it, providing constant comfort and energy independence. It’s why HeatMasterss recommends Rhinoflex®; it’s highly efficient, long-lasting, and economical. The Rhinoflex advantage is the fact it’s truly waterproof. Other types of piping use foam-wrapped PEX pipe inserted into a corrugated drain tile, which works great until the exterior shell becomes cracked or damaged. When the shell is damaged, water is able to penetrate causing insulating values to be dramatically reduced. The Rhinoflex outer shell and closed-cell foam core are virtually impervious to water. Learn more below.
HeatMaster RhinoFlex cut away
Rhino Flex - Direct Bural Dual Insulated PEX Pipe
Regular price $18.00
Ask a Question

RhinoFlex Insulated Pipe

Uses for Rhinoflex Pipe
  • a heavy, rugged high-density polyethylene outer jacket that can handle tough conditions
  • waterproof outer jacket that protects and insulates lines
  • reduced expansion and contraction during heating and cooling cycles
  • UV protection
  • 25 year warranty, the longest in the industry
What are the properties of Rhinoflex pipe?
  • less than 1 degree F heat loss per 100 feet underground
  • fuel and processing time savings
  • better performance of outdoor and indoor heating systems
  • reduced expansion and contraction during heat and cool cycles

Information

What is Rhinoflex piping?

Rhinoflex piping is a pre-insulated flexible PEX piping used in distributing hot water up to 204 degrees Fahrenheit. Because it has been pre-insulated, Rhinoflex is an efficient way to distribute heated water for a wide range of purposes like heating a home or outbuilding by carrying hot water from the furnace to the heating system. The heat is transferred and the water is then
returned to the outdoor furnace to be heated again.

How do you cut Rhinoflex piping?

Rhinoflex insulated piping comes in lengths up to 985 feet so you can run a line without joining or sealing.
If you do need to cut a pre-insulated pipe a simple handsaw will do the trick.

The Carrier Pipe

Oxygen barrier PEX A is used in Rhinoflex for hot water delivery which is the highest level of cross-linked polyethylene pipe available. A high-density polyethylene carrier pipe is used for cold services allowing for temperatures as low as -20 degrees Fahrenheit.

The Purpose of Oxygen Barrier PEX Pipe

With any closed loop hydronic heating system, using PEX A oxygen barrier piping like Rhinoflex by HeatMasterss is vital. Ferrous metals corrode when exposed to oxygen. If the system contains fresh oxygen, any components constructed of iron or steel will rust over time. Any PEX without an oxygen barrier allows oxygen from the air to permeate it. Even if the PEX is embedded in concrete, oxygen can seep in and chemically react with any iron or steel, causing damaging rust in your hot water heater and other appliances.

The Insulation

The high thermal efficiency of the flexible urethane insulation foam allows Rhinoflex to have a small outer jacket size that has less heat loss than comparable products. The insulation can expand and contract without stressing the materials for years of life and use. 

The Outer Jacket

Rhinoflex’s polyethylene outer jacket is flexible and corrugated to provide the greatest amount of long-term protection and durability. The outer jacket protects the insulation from moisture and damage and is designed to be buried. 

Shipping

Custom Shipping Required

Service

Expert Assistance

Locations

Stocked In Multiple Locations

Copyright© 2025 Off-GridSupply.com Designed by Altitude Studios Inc.

en
CAD
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • Shop Pay
  • Visa
Coupon
Drawer Title
Similar Products