Part Number GT 18 having (CAGE Code 23168) and FSC 4820 Valves Nonpowered in stock with ready to ship. Get an instant quote for GT 18 Valve Regulating Fluid Pressure by Hammel Dahl Inc. Fill the form below with your desired order quantity, targeted price and the expected order-fulfilment date. Our dedicated account manager will get back to you within 15 minutes.