needle valve, instrument hand valve, gauge valve, root valve
pressure up to 6000 psig(414 bar) for stainless steel
pressure up to 3000 psig(207 bar) for brass
standard vee stem, regulating stem and soft-seat stem available
temperature for ptfe packing from -65of to 450of(-54oc to 232oc)
temperature for grafoil packing from -65of to 1200of(-54oc to 649oc)
packing below stem thread isolates the thread lubricants from the media
ptfe ring in the gland protects stem thread from outside contamination