Parker MB Series Stainless Steel 316 Ball Valve, Inline, 1/4" NPT Female Stainless steel 316 for higher strength and greater corrosion resistance than stainless steel 304 Lever handle for manual on/off control PFA seat and packing design for tight sealing Maximum pressure rating of 3000 psig for CWP; working temperature range of -60 to 300 degrees Fahrenheit Female NPT threads for connecting to male threaded pipes