Check out our large cups with straw selection for the very best in unique or custom, handmade pieces from our tumblers & water glasses shops Dixon Powhatan Field Adjustable Pressure Reducing Brass Hose Valves Straight 2 1 2 Female 2 1 2 Nh Nst 400 Single hydrant gate valve. Made of brass. Maximum 300 psi pressure. Dixon HGVW250F Brass Single Hydrant Gate Valve, 2-1/2 NST feale x NST... The hydrant gate valve is used to throttle the flow from a fire hydrant without damaging the hydrant itself. Underwriters listed. Pin lug swivel, non-rising stem. Size: 2-1/2 NST female x 2-1/2 NST male. 2 Gate Valve Brass HGVW250F Dixon Foged Bass Single Hydant Gate Valve - 2-1/2 Fire Hydrant