R-flex is a pre-insulated, flexible, energy-saving PEX1 piping system with a durable, waterproof outer cover. R-flex is used as cost-effective distribution for heating and cooling applications in schools, universities, resorts, housing developments, and much more. It consists of a long-lasting PEX carrier pipe or pipes surrounded by thick insulation layers, all contained in a unique double-wall outer casing for maximum protection. The flexibility and light weight of R-flex make it far easier to install than rigid piping systems.
R-flex derives a unique benefit from the use of the polyethylene foam insulation and the double-wall outer shell; increased flexibility. This feature provides an advantage when running R-flex between buildings, around trench corners, or through wall penetrations. The ability to maintain tighter bends makes handling easier and installations quicker.
Simply dig a trench, lay down a sand foundation, and lay the R-flex in a gentle serpentine pattern. R-flex is self-compensating, eliminating the need for expensive expansion loops.
Single and Dual R-flex carrier pipe options provide greater system design flexibility and reduced installation time.
Long coil lengths minimize the need for mid-run connections translating into reduced installation costs and a reduced potential of leaks.
A double-wall, corrugated, high density polyethylene PE-HD twin outer wall casing protects both the carrier pipe and the insulation from jobsite damage and water absorption. The unique double-wall casing offers far superior protection and greater flexibility compared to single-wall products or installer fabricated methods.
Surrounding the inner PEX carrier pipe are several layers of micro-cellular, cross-linked polyethylene foam with a closed cellular structure. This unique design provides R-flex a low water vapor absorption, enhanced R-value insulation, and an excellent resistance to extreme temperatures.
R-flex is able to maintain its insulation properties over time. Other insulation types, such as polyurethane (PUR) foam, can crush when the pipe is bent, causing them to lose their insulative properties.
At the core of R-flex is either one or two barrier PEX carrier pipes. Each of the carrier PEX pipes is coated with an EVOH oxygen barrier which prevents oxygen from permeating into the piping system. Reducing oxygen in a closed-loop hydronic system increases the life expectancy of the system components.
Traditional carrier pipes, such as copper or black iron, require installers to cut and install transition fittings to work around an obstacle. With R-flex, installers no longer have to cut pipe and add connecting points. R-flex bends around the obstacle.
Fewer connections translate into reduced cost of parts and labor, less risk of leakages, and shorter installation times. Each buried transition, or connection, is sealed in a durable casing, protecting the connections from stress, water, and the effects of time. Moreover, R-flex system accessories can be installed without any special tools.
R-flex connections are an additional time-saver. Each connection is made with a standard torque wrench. No special tools required.