功能 结构节省空间 经济实惠 耐用 可选保护帽 规格 阀体尺寸和端部连接 1/4 NPT 较大入口压力 420 psig / 29.0 bar 固定的释放压力 35 至 350 psig / 2.4 至 24.1 bar 之中的九种设置 温度适用范围 -20 至 160°F/-29 至 71℃ Fisher Type H120 direct-operated relief valve has a preset and pinned spring retainer. The inlet pressure registers directly on a spring-opposed poppet assembly, which includes a Nitrile (NBR) disk. When the inlet pressure increases above the spring setting, the poppet and disk assembly is pushed away from the metal seat. Type H120 may be used where venting to the atmosphere is acceptable and where some pressure-relieving tolerance is acceptable. Features Space-Saving Construction Economical Durable Optional Protective Cap Specifications Body Size and End Connection 1/4 NPT Maximum Inlet Pressure 420 psig / 29.0 bar Fixed Relief Pressures 35 to 350 psig / 2.4 to 24.1 bar with nine settings Temperature Capabilities -20 to 160°F / -29 to 71°C Fisher China Guangzhou Honest Gas Equipment Co., LTD. Tel:+86-020-32201622 Mobile phone|weixin:15876552411 E-mail:363495724@