Brass full port packing gland ball valve solder. 600 psi (pounds per square inch) nonshock WOG (water oil gas) (1/2" thru 2"). 400 psi nonshock (2-1/2" thru 4"). CSA (Canadian Standards Association) - CR91-002 (1/2" thru 2"). CSA - CR88 (1/2" thru 2"). Packing gland provides means of replacing or adjusting the seal on the valve stem should it ever leak. Ball seats 100% PTFE (polytetrafluoroethylene). Temperature range -20 deg. F. to 300 deg. F. Pipe ends comply with ANSI (American National Standards Institute) B1.20.1. Solder ends comply with ANSI B16.18. IAPMO (International Association of Plumbing and Mechanical Officials)listed to cUPC (Canadian and American uniform plumbing code). Certified to NSF (National Sanitation Foundation). Import. Manufactured to include no more than 0.25% weighted average lead content on wetted surfaces.