MCC-NH Gas Fitters Practice Exam

What type of devices are exempt from certain installation provisions concerning outlets?

1. Flush-mounted quick-disconnect devices

2. Wall-mounted gas valves

3. Portable gas appliances

4. Gas meters

The correct answer is: Flush-mounted quick-disconnect devices

Flush-mounted quick-disconnect devices are exempt from certain installation provisions concerning outlets primarily because they are designed for those applications where gas appliances need to be easily and safely connected or disconnected without the risk of leakage. These devices allow for swift and secure gas connections, making them especially useful in settings like commercial kitchens or areas where appliances might be regularly moved or changed out. The design and functionality of flush-mounted quick-disconnect devices presume that when properly installed, they provide a safe and effective means of connecting gas supplies without the need for additional outlet requirements prescribed for fixed installations. This means that they streamline installation processes and afford flexibility while still maintaining safety standards. In contrast, wall-mounted gas valves typically require specific placements and adherence to regulations due to their permanent nature, portable gas appliances have different safety considerations regarding their mobility, and gas meters must be installed in compliance with specific regulations to ensure gas measurement accuracy and safety. Thus, these alternatives do not share the same exemption as flush-mounted quick-disconnect devices.