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B53004RS   美國派克PARKER 一級代理

B53004RS   美國派克PARKER 一級代理

美國派克PARKER氣動閥,PARKER氣控閥　

1,氣動調(diào)節(jié)閥的工作原理：氣動調(diào)節(jié)閥由執(zhí)行機(jī)構(gòu)和調(diào)節(jié)機(jī)構(gòu)組成。執(zhí)行機(jī)構(gòu)是調(diào)節(jié)閥的推力部件,它按控制信號壓力的大小產(chǎn)生相應(yīng)的推力,推動調(diào)節(jié)機(jī)構(gòu)動作。閥體是氣動調(diào)節(jié)閥的調(diào)節(jié)部件,它直接與調(diào)節(jié)介質(zhì)接觸,調(diào)節(jié)該流體的流量。
2.公稱壓力：(Nominal pressure),表示符號PN,在一定溫度下應(yīng)用時(shí)允許的最大工作壓力。對碳鋼閥體的控制閥,指200℃以下應(yīng)用時(shí)允許的最大工作壓力；對鑄鐵閥體,指120℃以下應(yīng)用時(shí)允許的最大工作壓力；對不銹鋼閥體的控制閥,指250℃以下應(yīng)用時(shí)允許的最大工作壓力。當(dāng)工作溫度升高時(shí),閥體的耐壓會降低。
例如,公稱壓力為6.4MPa(PN64)的碳鋼控制閥,用于300℃時(shí)的耐壓為5.2MPa,用400℃時(shí)的耐壓為4.1MPa,用于450℃時(shí)的耐壓為2.9MPa。因此,控制閥公稱壓力的確定不僅要根據(jù)最高工作壓力,還需根據(jù)最高工作溫度和材質(zhì)特性,而不僅僅只需滿足公稱壓力大于工作壓力

泉州天益機(jī)電貿(mào)易有限公司
聯(lián)系人:蔣芬 (銷售)
電話:0595-68253688 
傳真:0595-68239301
在線QQ：3001030018
網(wǎng)址:http://www.qztyjd.com
手機(jī):13559025135
派克氣動常用型號
B53004RS
CMD10-2
PMDXX2
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