CENTURY INSTRUMENT隔膜閥730-RV系列介紹
730-RV型隔膜控制閥
用于減壓服務(wù)，背壓控制或壓力釋放應(yīng)用處理去離子水，漿液，腐蝕性或研磨性液體，或任何需要隔膜式閥門的服務(wù)。
該組件包括一個(gè)630號(hào)氣動(dòng)隔膜閥，可根據(jù)需要常開或常閉，60-P壓力先導(dǎo)閥和可選的1725號(hào)化學(xué)附件，閥門定位器和單或雙限位開關(guān)。
對(duì)于背壓控制或壓力釋放服務(wù)，壓力傳感線從主閥上游的點(diǎn)連接到壓力導(dǎo)向器上的化學(xué)附件。
對(duì)于減壓服務(wù)，壓力傳感線必須位于主閥下游的一點(diǎn)。
特征
常開（彈簧打開）和常閉（彈簧關(guān)閉）均可帶或不帶閥門定位器和限位開關(guān)。定位器建議用于遇到流量和/或壓力波動(dòng)較大的安裝，特別是在減壓應(yīng)用中。
當(dāng)閥門用于漿液和腐蝕性或磨蝕性液體以隔離60-P壓力先導(dǎo)閥中的壓力測(cè)量元件時(shí)，提供化學(xué)附件。
對(duì)于需要密切調(diào)節(jié)控制的應(yīng)用，壓力先導(dǎo)閥配有可調(diào)節(jié)的比例機(jī)構(gòu)。
由于No.60-P氣動(dòng)先導(dǎo)閥的機(jī)構(gòu)，所有730系列控制閥必須安裝在直立位置。
Model 730-RV Diaphragm Control Valve
For pressure reducing service, back pressure control or pressure relief on application handling de-ionized water, slurries, corrosive or abrasive liquids, or any service which requires a diaphragm type valve.
The assembly consists of a No. 630 air-operated diaphragm valve either normally open or normally closed as desired, a No. 60-P pressure pilot and optional No. 1725 chemical attachment, valve positioner and single or dual limit switches.
For back pressure control or pressure relief service a pressure sensing line is connected to the chemical attachment on the pressure pilot from a point upstream from the main valve.
For pressure reducing service the pressure sensing line must be from a point downstream from the main valve.
Features
Both normally open (spring open) and normally closed (spring closed) are available with or without valve positioner and limit switches. Positioners are recommended for installations where large fluctuations in flow and/or pressure are encountered, particularly on pressure reducing applications.
The chemical attachment is furnished when the valve is to be used on slurries and corrosive or abrasive liquids to isolate the pressure measuring element in the 60-P pressure pilot.
For applications where close modulating control is required, the pressure pilot is provided with an adjustable proportioning mechanism.
Because of the mechanism in the No. 60-P pneumatic pressure pilot, all Series 730 control valves must be installed in an upright position.
CENTURY INSTRUMENT隔膜閥730-RV介紹圖
CENTURY INSTRUMENT隔膜閥730-RV系列
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CENTURY INSTRUMENT隔膜閥730-RV系列
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