UL Catalog 2024-2025 - Flipbook - Page 195
CLAMSHELL SECONDARY
TEST BOOTS
APT® secondary test boots are designed for testing the integrity of
secondary contained flexible piping when using APT® clamshell
fittings. Each boot has an air chuck for applying air pressure to the
secondary containment jacket. Placing a boot on each end of the
secondary containment jacket forms an airtight chamber for testing.
After the testing is completed slide the boots back on the pipe to
open the secondary system. The boots remain on the pipe available
for future testing as required by local regulations.
HIGHLIGHTS
SPECIFICATIONS
Model
• Boots are manufactured using fuel-resistant Nitrile rubber
and employ brass air chucks and stainless steel clamps for
maximum corrosion resistance.
STB-175
2.06"
STB-200
2.56"
STB-150
A
B
C
D
E
1.81"
1.75"
2"
2.06"
2.5"
2"
2.38"
2.44"
2.88"
2.5"
2.88"
2.94"
3.38"
• Boots are easily clamped down with a screwdriver or 5⁄16"
nut driver, forming an airtight chamber between the primary
pipe and the secondary jacket.
PIPING &
CONTAINMENT
• Secondary test boots slip over the end of the pipe prior to
installation of end fittings.
2.50"
1.25"
• The secondary chamber is pressurized to 5-8 psi through air
chuck to test system integrity.
• After pressure testing, the boots remain on the pipe for
future use but are pulled back to permit back-flow of fuel
leaks to the tank sump.
ORDERING INFORMATION
Model
Description
STB-150
Secondary test boot for XP-150-SC pipe
STB-175
Secondary test boot for XP-175-SC pipe
STB-200
Secondary test boot for XP-200-SC pipe
A B
C D E
195
