EHST 系列阀能无级地精确调节一定范围内的先导压力(不论是安全阀或减压阀)。但Vickers 公司为减少外围元件在阀体上集成了电子回路,同时使系统设计者的工作简化。该系列阀根据压力可调节范围分为90barθ和210bar 两种。额定流量为11/m。不论在设计方面,还是在性能方面,这些 ISO4401 3号阀(NFPA The EHST Series valves accurately and steplessly regulate a range of pilot pressures (either safety or pressure relief valves). Vickers, however, has integrated electronic circuits in the valve body to reduce the number of external components, while simplifying system designers’ work. The series of valves can be adjusted according to the pressure range is divided into 90barθ and 210bar two. The rated flow is 11 / m. These ISO4401 3 valves (NFPA.) Are designed for both design and performance