What is essential for fittings and valves used in groove connections?

For fittings and valves used in groove connections, it is crucial that they are dimensionally compatible with couplings. This compatibility ensures a proper fit, which allows for effective sealing and reliable performance of the system. If the dimensions of the fittings and valves do not match those of the couplings, it can lead to installation issues, leaks, and potential system failures. Having the correct dimensions helps maintain the integrity of the piping system and ensures that it operates safely and efficiently.

While other factors such as reuse or surface treatment (like painting) can be considerations in specific contexts, they do not hold the same level of importance as dimensional compatibility when it comes to the basic requirements for groove connections. The focus on compatibility emphasizes the need for standardization in fittings and couplings, which ultimately promotes safety and functionality in fire protection systems.