Teflon disk. Rising stem. Screwed-in bonnet. Handwheel operated. SPECIFICATION: Pressure / Temperature rating:32 bar from -10 to 100C. 14 bar @ 198C. Test pressure (hydraulic): shell:48 bar. seat:35.2 bar. Materials: body:gunmetal. bonnet:gunmetal. stem:OT 58 brass. disk:gunmetal/teflon. Gland packing:asbestos free.