Features : Screwed Female Ends to BSPT. Straight Pattern, Screwed in Bonnet, Inside Screw, Rising Stem. Provision for re-packing under pressure. Hand wheel Operated. High Quality lubricated Gland Packing. Renewable 13% Cr. Stainless Steel (AISI 410) working parts. Body Seat Ring and Disc are heat treated for longer life.