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一、產品概述Product Overview：

氣動薄膜單座調節(jié)閥由氣動薄膜執(zhí)行機構和調節(jié)閥兩大部分組成，它與氣動調節(jié)器，減壓閥、定位器或其他儀表配合使用，達到控制管道內的溫度、壓力、液位、流量等工藝參數(shù)。單座調節(jié)閥具有易密封，泄漏量小的優(yōu)點，但平衡力較大，故工作壓差不宜過高。雙座調節(jié)閥具有流量系數(shù)大，不平衡力較小的特點，因而使用廣泛.

Thin-film single-seat pneumatic control valve by the pneumatic diaphragm actuator and control valve of two parts, with pneumatic regulator, reducing valve, positioning, or used in conjunction with other instruments, to control the temperature inside the tubes, pressure, level, flow and other process parameters. Single-seat control valve with easy to seal, leakage of small advantages, but a large counterweight, the working pressure should not be too high. Seat valve with a flow coefficient, the unbalanced force of smaller features, which are widely used.

二、性能參數(shù)Performance parameters：

DN/mm			PN		環(huán)境溫度Ambient temperature/℃	固有流量特性 Inherent flow characteristic		氣源zui大壓力Maximum pressure gas source/MPa
25～300			16，40，64		-30～60	直線、等百分比Linear, equal percentage		0.25
DN /mm	流通能力Flow capacity		行程/mm	配用執(zhí)行器型號 Models equipped with actuators		灰鑄鐵閥 Gray cast iron valve
	單座Single-seat	雙座Seat				PN	工作壓力/MPa		介質溫度Medium temperature/℃
25	8	10	16	ZMA-2		16	1.6		≤200
32	12	16
40	20	25	25	ZMA-3
50	32	40
65	50	63	40	ZMA-4
80	80	100
100	120	160
125	200	250	60	ZMA-5
150	280	400
200	450	630
250		1000	100	ZMA-6
300		1600

三、主要零件材料Materials for main parts:

PN	閥體、上閥蓋、下閥蓋 Valve body, bonnet, under bonnet	閥芯、閥桿、閥座 Valve, stem, seat	墊片 Gasket	填料 Filler
16	HT200	1Cr18Ni9	石棉橡膠板 Asbestos Rubber Sheet	聚四氟乙烯 PTFE
40	ZG25	1Cr18Ni9
64	1Cr18Ni9	1Cr18Ni9