、概述Outline：
ZMAS精小型氣動薄膜角形單座調節(jié)閥采用頂部導向結構，配用多彈簧執(zhí)行機構，具有結構緊湊、重量輕、動作靈敏、流體通道呈S流線型、壓降損失小、閥容量大、流量特性精確、拆裝方便等優(yōu)點。廣泛應用于精確控制氣體、液體等介質的工藝參數(shù)如壓力、流量、溫度、液位保持在給定值。特別適用于允許泄漏量小，閥前閥后壓差小的高粘度，含有懸浮物和顆粒狀物質流體的調節(jié)，可避免結焦、堵塞、便于自凈與清洗的場合。
本系列產品有標準型、調節(jié)切斷型、波紋管密封型、夾套保溫型等多種品種。產品公稱壓力等級有1.6、4.0、6.4MPa，公稱通徑范圍DN20-200mm。最小閥芯口徑3mm，適用流體溫度有-200~+450。允許泄漏量等級有IV級和VI級，流量特性為線性或等百分比。
ZMAS fine small single-seat pneumatic control valve film angular orientation using top of the structure, equipped with multi-spring actuator, with a禁發(fā)網址pact, light weight, sensitive, fluid channel was streamlined S, the pressure drop loss, valve capacity, flow characteristics accurate, and easy disassembly. Widely used for precise control of gases, liquids and other media of process parameters such as pressure, flow, temperature, liquid level maintained at a given value. Especially for a small amount of allowable leakage, the valve before the valve after the pressure difference of the high viscosity, particulate matter containing suspended solids and fluid regulation, to avoid coking, plug, easy to self-purification and cleaning of the occasion.
This series of products are standard, adjust the cut-off, bellows seal type, jacket insulation type and other species. Product nominal pressure rank has 1.6,4.0,6.4 MPa, nominal diameter range of DN20-200mm. Minimum spool diameter 3mm, apply the fluid temperature -200 to +450. Allowable leakage levels are Class IV and Class VI, flow characteristics of linear or equal percentage.
二、主要零件材料Materials for main parts
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閥體、閥蓋 Body and bonnet
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HT200、WCB、ZG1Cr18Ni9Ti |
襯套Bush |
2Cr13 |
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閥芯、閥座 Valve, the valve seat
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1Cr18Ni9Ti、司鈦萊合金堆焊 1Cr18Ni9Ti, Division titanium alloy welding Levin
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膜蓋Membrane cover |
A3 |
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閥桿、推桿 Stem, putting
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2Cr13、1Cr18Ni9Ti |
彈簧Spring |
60Si2Mn |
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波紋膜片 Corrugated diaphragm
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丁腈橡膠夾增強滌綸織物 Nitrile rubber, polyester fabric enhanced folder
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墊片Gasket |
橡膠石棉板、1Cr18Ni9Ti、石墨纏繞墊片 Rubber, asbestos, 1Cr18Ni9Ti, graphite spiral wound gasket
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軟密封閥芯 Soft seal spool
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增強聚四氟乙烯PTFE |
填料Filler |
聚四氟乙烯、柔性石墨、不銹鋼波紋管 PTFE, flexible graphite, stainless steel bellows
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三、主要技術參數(shù)The main technical parameters：
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公稱通徑DN |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
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閥座直徑dn(mm) |
10 |
12 |
15 |
20 |
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流量系數(shù)Kv |
直線Straight line |
1.8 |
2.8
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4.4 |
6.9
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11 |
17.6 |
27.5 |
44 |
69 |
110 |
176 |
275 |
440 |
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等百分比Equal percentage |
1.6 |
2.5
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4 |
6.3
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10 |
16 |
25 |
40 |
63 |
100 |
160 |
250 |
400 |
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額定行程L(mm) |
10 |
16 |
25 |
40 |
60 |
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膜片有效面積Ac(cm2 |
280 |
400 |
600 |
1000 |
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公稱壓力PN(MPa) |
1．6、4．0、6．4 |
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固有流量特性Inherent flow characteristic |
直線、等百分比Linear, equal percentage |
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固有可調比RInherent adjustable ratio |
50：1 |
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信號范圍Pr(Kpa) |
20~100、40~200、80~240段幅：20~60、60~100 |
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氣源壓力Ps(MPa) |
0．14~0。4 |
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允許泄漏量Allowable leakage |
硬密封：IV級、軟密封：VI級Seal: IV level, soft seal: VI grade |
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工作溫度tempreture(℃) |
—40~450 |
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基本誤差%Basic error |
不帶定位器≤±5帶定位器≤±1
Without positioner ≤ ± 5 ≤ ± 1 with locator
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回差%Differential |
不帶定位器≤3帶定位器≤1
Without positioner ≤ 3 ≤ 1 with locator
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死區(qū)%Dead |
不帶定位器≤3帶定位器≤0.4
Without a locator with locator ≤ 3 ≤ 0.4
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可配附件Available Accessories |
電-氣閥門定位器空氣過濾減壓器手輪機構
Electric - gas air filter pressure reducer valve positioner handwheel
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