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，游泳池和溫泉系統等。采用三閥座的和EPDM密封能保證使用壽命長。全PVC的材質，結構牢固，重量輕。可現場選擇NPT螺紋連接或套管連接方式。
3PBV系列可配備電動或氣動執行機構。電動執行機構型為NEMA 4 全天候防護，115VAC供電，可選兩位控制或連續控制。兩位式控制采用115VAC直接驅動閥門打開或關閉，連續控制方式接受4-20mA輸入信號，控制閥門到任意位置。執行機構帶有過載保護，閥位指示和自潤滑傳動等功能。
氣動雙作用執行機構采用氣源直接控制兩個進氣孔來打開或關閉閥門，彈簧回位式氣動執行機構采用氣源驅動一個方向，內部彈簧回力驅動另外一個方向。可選擇SV3電磁先導閥來電動控制氣源壓力實現閥門的控制。鋁制結構的執行機構，采用環氧樹脂涂層保護，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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