日韩av在线高清免费毛片日韩欧美一级成人|女人18以后毛片|国产18女人毛多水多毛片|乱系列人妻视频|中文字幕久久熟女人妻av|91麻豆人妻|校花被我玩弄|父女乱荡|高潮videossex潮喷另类|日本在线观看人妻,黑人侵犯日本人妻,色哟哟视频线在线播放欧美,亚洲欧美国产国产一区第二页

產(chǎn)品概述 Product Overview

HPR439型調(diào)壓閥是一種彈簧設(shè)定直接作用微壓調(diào)節(jié)閥，可將較高壓力的氣體一次

節(jié)流減壓穩(wěn)壓極低壓力,，用于閥后控制。適用于各類氣體的微壓控制,，特別適用于

微壓氮封,。控制壓力O.3KPa,，控制壓力為15KPa,，使用溫度-48℃，

使用溫度120 ℃,。

可用于儲罐,，除塵器，料倉充入惰性氣體氮封,，降低氧含量,，防止氣體和粉塵爆炸

HPR439 Pressure regulating valve is a spring-driven micro-pressure regulating valve and

can reduce and stabilize high-pressure gas to the extreme low pressure. It is only used for

downstream pressure control. It is also used for micro-pressure control of different gases.

Especially apply to the nitrogen blanketing system. The minimum control pressure is 0.3KPa. The

maximum control pressure is 15KPa. The minimum operation temperature is-48℃The maximum

operation temperature is 1200℃