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These valves reduce the number of gauge and other instrument connections to permanent piping installations, decreasing possible leak paths. Stem packing below the threads prevents thread galling and contamination. Viton O-ring seal and Teflon® back-up ring below the stem threads to protect from corrosion and galling. All stem threads are rolled for strength and ease of operation. Bonnet lock pin to prevent accidental loosening. Vinyl bonnet and stem dust cap. 0.187" orifice size. 6000 psi pressure rating at 200 degree F maximum. Replaceable Delrin seat. Straight through porting for bi-directional, high capacity flow and easy roddable cleaning.