They are spool type valves with single or double air pilots with pressure ranges from 0 to 150 psig.
他们阀阀芯型单人或双人空中飞行员从0到150 PS IG中的压力范围。
3
Containers used for transporting liquid nitrogen at pressures greater than 25 psig (40 psia) need to be designed, manufactured, and tested to DOT specifications.