PERMA-COTE SPECIFICATIONS
- The PVC coated rigid metal conduit must be UL Listed. The PVC coating must have been investigated by UL as providing the primary corrosion protection for the rigid metal conduit. Ferrous fittings for general service locations must be UL Listed with PVC as the primary corrosion protection. Hazardous location fittings, prior to plastic coating must be UL listed. All conduit and fittings must be new, unused material. Applicable UL standards may include: UL 6 Standard for Safety, Rigid Metal Conduit, UL514B Standard for Safety, Fittings for Conduit and Outlet Boxes.
The conduit shall be hot dip galvanized inside and out with hot galvanized threads.
Form 8 Condulets®, 1/2" through 2" diameters, shall have a tongue-in-groove "" gasket to effectively seal against the elements. The design shall be equipped with a positive placement feature to ease and assure proper installation. Certified results confirming seal performance at 15 psig (positive) and 25 in. of mercury (vacuum) for 72 hours shall be available.
- A PVC sleeve extending one pipe diameter or two inches, whichever is less, shall be formed at every female fitting opening except unions. The inside sleeve diameter shall be matched to the outside diameter of the conduit.
- The PVC coating on the outside of conduit couplings shall have a series of longitudinal ribs 40 mils in thickness to protect the coating from tool damage during installation.
- Form 8 Condulets® shall be supplied with plastic encapsulated stainless steel cover screws.
- A green urethane coating shall be uniformly and consistently applied to the interior of all conduit and fittings. This internal coating shall be a nominal 2 mil thickness. Conduit or fittings having areas with thin or no coating shall be unacceptable.
- The PVC exterior and urethane interior coatings applied to the conduit shall afford sufficient flexibility to permit fieldbending without cracking or flaking at temperatures above 30°F (-1°C).
- All male threads on conduit, elbows and nipples shall be protected by application of a urethane coating.
- All female threads on fittings or conduit couplings shall be protected by application of a urethane coating.
- Independent certified test results shall be available to confirm coating adhesion under the following conditions:
A. Conduit immersed in boiling water with a minimum mean time to adhesion failure of 200 hours. (ASTM D870)
B. Conduit and condulet exposure to 150°F (65°C) and 95% relative humidity with a minimum mean time to failure of 30 days. (ASTM D1151)
C. The interior coating bond shall be confirmed using the Standard Method of Adhesion by Tape Test (ASTM D3359).
D. No trace of the internal coating shall be visible on a white cloth following six wipes over the coating which has been wetted with acetone (ASTM D1308).
E. The exterior coating bond shall be confirmed using the methods described in Section 3.8, NEMA RN1. After these tests the physical properties of the exterior coating shall exceed the minimum requirements specified in Table 3.1, NEMA RN1.
- Right angle beam clamps and U bolts shall be specially formed and sized to snugly fit the outside diameter of the coated conduit.
- Installation of the Perma-Cote Conduit System shall be performed in accordance with the Perma-Cote Installation Manual. To assure correct installation, the installer shall be certified by PERMA-COTE to install coated conduit.
- Approved Material: Perma-Cote Coated Conduit and Fittings as manufactured by Perma-Cote, Gilmer, Texas. Any deviation from the above specifications must be approved by the cognizant engineer.
The PVC coated rigid metal conduit must be UL Listed. The PVC coating must have been investigated by UL as providing the primary corrosion protection for the rigid metal conduit. Ferrous fittings for general service locations must be UL Listed with PVC as the primary corrosion protection. Hazardous location fittings, prior to plastic coating must be UL listed. All conduit and fittings must be new, unused material. Applicable UL standards may include: UL 6 Standard for Safety, Rigid Metal Conduit, UL514B Standard for Safety, Fittings for Conduit and
Outlet Boxes.
Conduit and fittings shall be evaluated for reliability and performance. Certified test results are the respective test data that have been witnessed and certified to be accurate by an independent, recognized third party.
- Acceptable conduit PVC bonds shall pass the bond test with a minimum average of 200 hours in an accelerated boil test. (ASTM D870)
- Acceptable conduit and fitting PVC bonds shall be confirmed with a minimum average of 30 days in a heat and humidity test (ASTM D1151 and D2247) with the temperature at 150°F (66°C) and 95% relative humidity.
- Acceptable seal performance shall be confirmed at 15 psig (positive) and 25 in. of mercury (vacuum) for 72 hours.
Contact local PERMA-COTE Sales Representatives for third party testing certification and procedure methods.
Click Here To See: