Forged brass. Chrome-plated ball. PTFE (polytetrafluoroethylene) seats, blowout proof stem. Vinyl grip and vibration proof locknut. Temperature range: -20 F (degree Fahrenheit) to 350 F. AGA (American Gas Association) certified for use with natural, manufactured, mixed, LP (liquified petroleum) gas, and LP gas/air mixtures up to 2 psi (pounds per square inch). Complies with federal specifications WW-V-35B. Type II, Style 3. Solder ends comply with ANSI (American National Standards Institute) B16.18. Import. Manufactured to include no more than 0.25% weighted average lead content on wetted surfaces.