Installation Instructions

This standard applies to natural and propane gas piping systems using corrugated stainless steel tubing
(CSST), intended for installation in residential, commercial or industrial building including the follow-
ing components as a minimum:
a) Corrugated stainless steel tubing (CSST)
b) Fittings for connection to the CSST
c) Striker plates and/or protective conduit to protect the installed CSST from puncture
threats
Other Components of piping systems covered in this standard include gas manifolds,
gas pressure regulators. If such additional components are required to complete the gas
piping installation, they shall be either be provided as part of the piping system or speci-
fied in this Pro-Flex® CSST Installation/Training Guide.
• Pro-Flex® Fittings are tested for concealment (subject to local code approval)
• Pr
o-Flex
® can be routed in most locations where traditional rigid gas piping materials
are installed:
* Inside hollow wall cavities and through walls
* Beneath or through floor and ceiling joists
* On top of ceiling joists in an attic space
* Outside of a building to gas meters and propane supply tanks
•
Pro-Flex® has been tested and listed by CSA (formerly American Gas Association)
for outdoor use.
• Pro-Flex® can be used with all fuel gases recognized in the NFPA 54 National Fuel
Gas Code up to a maximum ANSI/CSA LC-1 listed operating pressure of 5 psi (34.5
kPa).
The maximum actual operating pressure, including transients, shall not in any
case exceed 6.5 psi (44.8 kPa).
•
Pro-Flex® can be used in combination with all approved fuel piping materials for new
construction and for replacing and retrofitting existing piping installations. All
Pro-
Flex® mechanical joint fittings terminate in a standard NPT male pipe thread which
allows for
attachment to valves, unions and couplings.
• For underground burial and embedded in concrete, (CSST) flexible gas piping must be
routed within a non-metallic, water tight conduit. No mechanical joint fittings are per-
mitted within the conduit.
•
Pro-Flex® may be connected directly to FIXED appliances (subject to local code
approval).
Flexible appliance connectors (such as Tru-Flex's Home-Flex® gas connectors) must
be used to connect to a moveable gas appliance.
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TRU-FLEX METAL HOSE CORP.
800-255-6291
West Lebanon, IN 47991
e-mail: [e-mail]