Details
AirTAC 2L Series: Direct Acting Normally Closed (NC) Valve
The AirTAC 2L Series (Direct Acting) is a compact 2/2-way solenoid valve designed for systems requiring a zero-pressure startup. Unlike the larger piloted versions of the 2L series, this direct-acting version does not rely on a pressure differential to function; the solenoid coil directly lifts the internal plunger to open the orifice.
Being Normally Closed (NC), the valve remains tightly sealed when de-energized, making it an essential component for safety shut-offs, laboratory equipment, vacuum applications, and low-pressure fluid dispensing where flow must be stopped instantly upon power loss.
Key Product Features
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Zero-Pressure Operation: Capable of opening and closing at 0 MPa (0 psi), making it ideal for gravity-fed tanks, siphons, and vacuum lines.
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Rapid Response: The direct-acting mechanism ensures a faster actuation time compared to piloted valves, providing precise control for dosing or high-speed cycling.
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Durable Brass Construction: Forged brass body provides excellent mechanical strength and resistance to vibration in industrial environments.
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Stainless Steel Internals: The plunger and spring are made of high-grade stainless steel to prevent corrosion and ensure a long service life.
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Compact Footprint: Small orifice sizes (typically up to 5mm) allow for a reduced valve body size, making it easy to integrate into tight machine spaces or manifolds.
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Chemical Compatibility: Often available with high-performance VITON (FKM) seals to handle various industrial fluids and higher temperature ranges.
Specifications
| Model \ Item | Port size [Note 1] | Orifice size (ømm) | Cv | Valid area or section (mm²) | Weight [Note 2] (g) | Max operating pressure differential | Proof pressure | |||
| Mpa | psi | Mpa | psi | |||||||
| 2LH030 | 06 | 1/8" | 2 | 0.18 | 3 | 300 | 2 | 300 | 3 | 450 |
| 08 | 1/4" | 290 | ||||||||
| 2L030 | 06 | 1/8" | 3 | 0.33 | 6 | 300 | 1 | 150 | ||
| 08 | 1/4" | 290 | ||||||||
| 2LH050 | 10 | 3/8" | 4 | 0.55 | 10 | 600 | 2 | 300 | ||
| 15 | 1/2" | 590 | ||||||||
| 2L050 | 10 | 3/8" | 5 | 0.83 | 15 | 600 | 1 | 150 | ||
| 15 | 1/2" | 590 | ||||||||
Coil specifications
| Valve type | Coil type | Power type | Frequency (Hz) | Voltage range | Electrical entry | Power consumption (VA/W) | Insulation | Temp. rise (˚C) |
| 2L030 | CDA 116 CLA 116 | AC | 50 | ±15% | Terminal (CDA) Grommet (CLA) | 10.0VA | Class H | 35 |
| 60 | 8.0VA | 30 | ||||||
| DC | - | ±10% | 6.5W | 30 | ||||
| 2L050 | CDA 170 CLA 170 | AC | 50 | ±15% | 25.0VA | 60 | ||
| 60 | 22.0VA | 55 | ||||||
| DC | - | ±10% | 12.0W | 40 |
Valve specifications
| Acting | Direct acting | ||||
| Initial state | Normally closed | ||||
| Adaptable fluid | Steam, High temperature Water, Oil | ||||
| Viscosity limit | Under 20 CST | ||||
| Ambient and fluid temperature (˚C) | Oil | Water | Steam | Ambient | |
| Max. | 150 | 150 | 183 | 100 | |
| Min. | -10 [Note 1] | 1 | - | -20 | |
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