38 – Part 5: Specifications
VELUX flextubes and connections
VELUX flexible pipe specifications
Max operating pressure
145 psi
External diameter, pipe
7/8”
Internal diameter, pipe
5/8”
Wall thickness, insulation
5/8”
Liquid volume
0.02 gal./ft.
Material, pipe
Stainless steel / AISI 316 TI
Material, insulation
Foam EPDM
Temperature limit, insulation
+ 350 °F to - 40 °F
Insulation value
0.04 w/mK
R-Value
R-4
VELUX flextubes feature:
• Flexible corrugated stainless steel tubing
• Pre-installed Armaflex HT insulation with UV inhibitors
• Brass connection fittings
• Gasket-free conical connections ensure tight and secure connections to
VELUX solar collectors
• Pipe hangers and supports included
Gasket-free conical connection for connection to VELUX
solar collectors
The flextubes are pre-insulated to allow for quick and
easy installation
Adjustable length end for connection to VELUX pump
stations and solar tanks using lock ring, nut and gasket
A
B
C
A
A
A
B
B
C
ZFM
ZFR
