3PBV系列 工程塑料三通自動球閥*適合用于混流或分流，用于化工，灌溉，游泳池和溫泉系統(tǒng)等。采用三閥座的和EPDM密封能保證使用壽命長。全PVC的材質(zhì)，結(jié)構(gòu)牢固，重量輕�？涩F(xiàn)場選擇NPT螺紋連接或套管連接方式。
3PBV系列可配備電動或氣動執(zhí)行機(jī)構(gòu)。電動執(zhí)行機(jī)構(gòu)型為NEMA 4 全天候防護(hù)，115VAC供電，可選兩位控制或連續(xù)控制。兩位式控制采用115VAC直接驅(qū)動閥門打開或關(guān)閉，連續(xù)控制方式接受4-20mA輸入信號，控制閥門到任意位置。執(zhí)行機(jī)構(gòu)帶有過載保護(hù)，閥位指示和自潤滑傳動等功能。
氣動雙作用執(zhí)行機(jī)構(gòu)采用氣源直接控制兩個進(jìn)氣孔來打開或關(guān)閉閥門，彈簧回位式氣動執(zhí)行機(jī)構(gòu)采用氣源驅(qū)動一個方向，內(nèi)部彈簧回力驅(qū)動另外一個方向�？蛇x擇SV3電磁先導(dǎo)閥來電動控制氣源壓力實現(xiàn)閥門的控制。鋁制結(jié)構(gòu)的執(zhí)行機(jī)構(gòu)，采用環(huán)氧樹脂涂層保護(hù)，使得它防腐耐用。
Service: Compatible liquids or gases.
Body: 3-way.
Line Size: 1/2" to 2".
End Connections: Female NPT or socket (field selectable).
Pressure Limit: 1/2" to 1": 232 psi (16.0 bar) @ 73°F (23°C); 1-1/4" to 2": 150 psi (10.3 bar) @ 73°F (23°C) WOG. Vacuum: 29" Hg. See Catalog page for curve.
Wetted Materials: Body & End Connections: PVC; Ball & Stem: PVC; Seat: TFE; Stem Seal: EPDM.
Temperature Limit: 32 to 140°F (0 to 60°C).
ACTUATORS
Electric
Power Requirements: 120 VAC, 50/60 Hz, single phase. Optional 220 VAC, 24 VAC, 12 VDC, and 24 VDC.
Power Consumption (Locked Rotor Current): Two Position: 1/2" to 1-1/2": 0.55A; 2": 0.75A. Modulating: 0.75A.
Cycle Time (per 90°): Two Position: 1/2" to 1-1/2": 2.5 sec.; 2": 5 sec. Modulating: 5 sec.
Duty Cycle: Two Position: 1/2" to 1-1/2": 75%; 2": 25%. Modulating: 75%.
Enclosure Rating: NEMA 4. Optional NEMA 7 (Class 1, Div. II, Groups A, B, C, D).
Housing Material: Aluminum with thermal bonding polyester powder finish.
Temperature Limit: 0 to 150°F (-18 to 65°C).
Conduit Connection: 1/2" female NPT.
Modulating Input: 4 to 20 mA.
Standard Features: Manual override and visual position indicator except modulating units.
Pneumatic
Type: DA series is double acting and SR series is spring return (rack and pinion).
Normal Supply Pressure: 80 psi (5.5 bar).
Maximum Supply Pressure: 120 psig (8 bar).
Air Connections: DA1 to 2 and SR2 to 3: 1/8" female NPT; all others: 1/4" female NPT.
Air Consumption (per stroke): DA1: 2.32 cu. in.; DA2 & SR2: 9.34 cu. in.; SR3: 17.21 cu. in.
Cycle Time (per 90°): DA1: .03 sec.; DA2: .04 sec.; SR2: .09 sec.; SR3: .14 sec.
Housing Material: Anodized aluminum body and epoxy coated aluminum end caps.
Temperature Limit: -4 to 180°F (-20 to 82°C).
Accessory Mounting: NAMUR standard.
Standard Features: Visual position indicator.
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