FLEXSURE UNDERGROUND


For a fast and professional connection,
when your solar collector is located
away from your hot water tank.

FEATURES
  • Direct burial
  • CSST diameter from 5/8" to 1-1/4"
  • Available in lengths up to 100 feet
  • Utilizes the same XR2 fittings used by Gastite gas line
  • HDPE exterior pipe
  • 3-6" tile dia. meet ASTM F405 ground burial specifications
  • Continuous lengths/no underground connections
  • End caps to shield out ground water
  • Two conductor #18 AWG shielded control wire (standard)
  • Other wire requirements (custom)
  • Operating temperature range of -60° to 300°F
  • Highest quality 316L SS used

BENEFITS

  • No potential for leaking underground
  • Solar collector can be located away from structure
  • Resistant to rodents
  • East to install.
  • Flexible - can be routed around obstructions
  • Can be routed around a corner as tight as 8" radius
  • Wiring and plumbing in one bundle
  • Can be cut to any shorter length in the field
  • Compatible with other FlexSure Solar products
  • Full range of fittings include copper sweat and NPT thread
  • Low cost installation

Download the FlexSure Underground Sell Sheet.

PART LIST

PART NUMBER* DESCRIPTION
STANDARD LENGTHS
PACK WEIGHT (LBS./FT.)
Dual Pre-Insulated Underground Solar Tubing - 5/8" Insulation Thickness
DPSU-IB1-DN16-(Length) 5/8" (DN16) CSST
Inserted into 4" Tile Pipe
50 ft., 75 ft.
0.76
DPSU-IB1-DN20-(Length) 3/4" (DN20) CSST
Inserted into 4" Tile Pipe
50 ft., 75 ft.
0.80
DPSU-IB1-DN25-(Length) 1" (DN25) CSST
Inserted into 6" Tile Pipe
50 ft., 75 ft.
1.38
Dual Pre-Insulated Underground Solar Tubing - 1" Insulation Thickness
DPSU-IB2-DN16-(Length) 5/8" (DN16) CSST
Inserted into 6" Tile Pipe
50 ft., 75 ft.
1.30
DPSU-IB2-DN20-(Length) 3/4" (DN20) CSST
Inserted into 6" Tile Pipe
50 ft., 75 ft.
1.34
DPSU-IB2-DN25-(Length) 1" (DN25) CSST
Inserted into 6" Tile Pipe
50 ft., 75 ft.
1.53
Single Pre-Insulated Underground Solar Tubing - 5/8" Insulation Thickness
PSU-IB1-DN16-(Length) 5/8" (DN16) CSST
Inserted into 4" Tile Pipe
50 ft., 100 ft.
0.60
PSU-IB1-DN20-(Length) 3/4" (DN20) CSST
Inserted into 4" Tile Pipe
50 ft., 100 ft.
0.62
PSU-IB1-DN25-(Length) 1" (DN25) CSST
Inserted into 4" Tile Pipe
50 ft., 100 ft.
0.69
PSU-IB1-DN32-(Length) 1-1/4" (DN32) CSST
Inserted into 4" Tile Pipe
50 ft., 100 ft.
0.81
Single Pre-Insulated Underground Solar Tubing - 1" Insulation Thickness
PSU-IB2-DN16-(Length) 5/8" (DN16) CSST
Inserted into 4" Tile Pipe
50 ft., 100 ft.
0.65
PSU-IB2-DN20-(Length) 3/4" (DN20) CSST
Inserted into 4" Tile Pipe
50 ft., 100 ft.
0.67
PSU-IB2-DN25-(Length) 1" (DN25) CSST
Inserted into 4" Tile Pipe
50 ft., 100 ft.
0.81
PSU-IB2-DN32-(Length) 1-1/4" (DN32) CSST
Inserted into 4" Tile Pipe
50 ft., 100 ft.
0.95