When Should I Use Conduit Expansion Fittings?
When Should I Use Conduit Expansion Fittings? Expansion fittings are used in aboveground installations where temperature changes are anticipated to exceed 25°F (14°C). Expansion fittings are usually used where the straight run length is greater than 25 feet and expected temperature change is greater than 60°F. What is the purpose of expansion coupling? Expansion couplings