產(chǎn)品中心
Product Center
您當(dāng)前的位置：首頁(yè)產(chǎn)品中心Dwyer 蝶閥 WE20系列
Lug or Wafer, EPDM or PTFE, Electric or Pneumatic Actuators
WE20系列蝶閥有凸耳式或晶圓式閥體，配置聚四氟乙烯或三元乙丙橡膠襯墊。WE20系列蝶閥最關(guān)鍵的方面是插裝閥座設(shè)計(jì)，這減輕了與普通“鴿尾設(shè)計(jì)”閥座相關(guān)的安裝問(wèn)題。由于閥座動(dòng)力學(xué)不依賴于兩個(gè)法蘭之間的耦合，因此閥門扭矩更低，也更一致。閥瓣和閥體的精密加工使得插裝結(jié)構(gòu)能夠保持更緊密的閥瓣與閥座的公差，每次閥門循環(huán)時(shí)都提供完美的低扭矩密封。閥座到閥瓣密封獨(dú)立于法蘭支撐，能夠進(jìn)行全額定終端應(yīng)用。執(zhí)行機(jī)構(gòu)直接安裝，為緊湊的空間創(chuàng)建一個(gè)緊湊的總成。限位開(kāi)關(guān)可以直接安裝在閥門上，從而實(shí)現(xiàn)遠(yuǎn)程位置指示。WE20系列可配置電動(dòng)或氣動(dòng)執(zhí)行器。電動(dòng)執(zhí)行器有耐候性或防爆性，多種供電電壓和雙位置或調(diào)制控制。雙位置執(zhí)行器使用電源電壓驅(qū)動(dòng)閥門開(kāi)啟或關(guān)閉，而調(diào)制執(zhí)行器接受4-20 mA輸入來(lái)進(jìn)行閥門定位。執(zhí)行機(jī)構(gòu)具有熱過(guò)載保護(hù)和永久潤(rùn)滑齒輪系統(tǒng)。氣動(dòng)雙作用執(zhí)行器利用供氣來(lái)驅(qū)動(dòng)閥門開(kāi)啟和關(guān)閉。執(zhí)行器有兩個(gè)供氣口，一個(gè)驅(qū)動(dòng)閥門開(kāi)啟，另一個(gè)驅(qū)動(dòng)閥門關(guān)閉。彈簧復(fù)位氣動(dòng)執(zhí)行器利用供氣打開(kāi)閥門，內(nèi)加載彈簧將閥門復(fù)位到關(guān)閉位置。
氣動(dòng)雙作用執(zhí)行器利用供氣來(lái)驅(qū)動(dòng)閥門開(kāi)啟和關(guān)閉。執(zhí)行器有兩個(gè)供氣口，一個(gè)驅(qū)動(dòng)閥門開(kāi)啟，另一個(gè)驅(qū)動(dòng)閥門關(guān)閉。彈簧復(fù)位氣動(dòng)執(zhí)行器利用供氣打開(kāi)閥門，內(nèi)加載彈簧將閥門復(fù)位到關(guān)閉位置。SV3電磁閥還可用于在供氣端口之間電動(dòng)切換供氣壓力，以開(kāi)啟和關(guān)閉閥門。執(zhí)行機(jī)構(gòu)由陽(yáng)極氧化和環(huán)氧涂層鋁構(gòu)成，可多年防腐使用。
規(guī)格規(guī)格
SPECIFICATIONS VALVE
Service Compatible liquids, gases, and steam.
Body 2-way, wafer or lug butterfly.
Line Sizes 2 to 12".
End Connections Lug and wafer pattern designed for flanges that are ANSI Class 125 (B16.1) and ANSI Class 150 (B16.5) dimension.
壓力范圍 225 psi (15.5 bar).
Wetted Materials Body Material: Ductile iron; Disc: 316 SS; Seat: EPDM or PTFE; O-ring: EPDM; Stem: 410 SS.
Temperature Limits Disc: EPDM: -50 to 250°F (-46 to 121°C);
PTFE: 0 to 300°F (-18 to 149°C).
Bearings Nylatron.
Operator 2 to 6" 10-position locking hand lever; 8 to 12": manual gear.
ACTUATORS
Pneumatic “DA” and “SR” Series Type DA series is double acting and SR series is spring return (rack and pinion).
Normal Supply Pressure DA: 40 to 115 psi (2.7 to 7.9 bar); SR: 70 to 115 psi (4.8 to 7.9 bar).
Maximum Supply Pressure 120 psi (8.6 bar).
Air Connections DA03 thru DA11: 1/4" FNPT; SA03 thru SR11: 1/4" FNPT.
Housing Material Anodized aluminum body and epoxy coated aluminum end caps.
Temperature Limits -40 to 176°F (-40 to 80°C).
Accessory Mounting NAMUR standard.
Electric "TD" and "MD" Series
Power Requirements 110 VAC, 220 VAC or 24 VAC.
Power Consumption See instruction manual.
Cycle Time (per 90°) TD01 and MD01: 4 s; TD02 and MD02: 20 s; TD03 and MD03: 30 s; TD04 and MD04: 30 s; TD05 and MD05: 30 s; TD06 and MD06: 45 s; TD07 and MD07: 30 s.
Duty Rating 85%.
Enclosure Rating NEMA 4X (IP67).
Housing Material Powder coated aluminum.
Temperature Limits -22 to 140°F (-30 to 60°C).
Electrical Connection 1/2" female NPT.
Modulating Input 4 to 20 mA.
Standard Features Manual override, position indicator, and TD models come with two limit switches.
Electric "TH" and "MH" Series
Power Requirements 110 VAC, 220 VAC, 24 VAC or 24 VDC.
Power Consumption See instruction manual.
Cycle Time (per 90°) See instruction manual.
Duty Rating See instruction manual.
Enclosure Rating NEMA 7, designed to meet hazardous locations: Class I, Group C & D; Class II, Group E, F & G; Division I & II.
Housing Material Powder Coated Aluminum.
溫度范圍 -22 to 140°F (-30 to 60°C).
Electrical Connection 1/2" female NPT.
Modulating Input 4 到 20 mA.
Standard Features Position indicator and two limit switches.
品種齊全，上萬(wàn)種儀表
國(guó)外直銷， 原裝進(jìn)口
誠(chéng)信服務(wù)，售后保證
