To complete the range of 4-way/3-position ball valves we have the RAS4-NPT series with NPT threaded ports. As for the similar range with GAS-BSPP threads, also the RAS4-NPT taps allow the complete management of the oil flow directionality thanks to the possibility to choose between three types of spools, all with closed center, for the best adaptability to the needs application. RAS4-NPT taps are available in sizes from 1/4 NPT to 1-1 / 2 NPT for recommended working flows up to 150 lpm (39,6 gpm). The maximum operating pressure of the RAS4-NPT valves varies according to the size chosen and can reach 500 bar (7250 PSI). The durability of the product is guaranteed by the components made of high strength steel. The external body is subjected to galvanizing treatment to favor its resistance to corrosion.