| Maximum Flow RateRequired | 50–500 L/min | Maximum controllable gas flow rate |
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| Operating PressureRequired | 2–10 bar | 2–10 — Inlet pressure from supply; outlet pressure regulated to 1–3 bar for injection. |
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| Gas Type Compatibility | Ar, N2, Cl2 (optional) | Ar, N2, Cl2 (optional) — Materials must be compatible with dry chlorine if used; PTFE seals for Cl2. |
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| Number of Injection Points | 1–4 points | 1–4 — Depends on ladle size and degassing method (lance vs. rotary). |
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| Control Valve Type | Pneumatic or electric actuated | Pneumatic or electric actuated — Electric for high accuracy; pneumatic for cost-sensitive. |
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| Flow Meter Accuracy | ±0.5–1.0 % of reading | ±0.5–1.0 — For orifice plates; thermal mass meters have different standards.ISO 5167 |
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| Pressure Regulator Accuracy | ±0.5–1.0 % of set point | ±0.5–1.0 — Typical for high-precision regulators. |
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| Response Time | 1–5 s | 1–5 — Time to reach 90% of set point after a step change. |
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| Materials of Construction | 316L SS, PTFE, EPDM, brass (for non-corrosive gases) | 316L SS, PTFE, EPDM, brass (for non-corrosive gases) — 316L for wetted parts; PTFE for seals; brass for fittings if Cl2 not used.ASTM A312, ASTM D2000 |
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| Connection Size | 1/4–1 inch | 1/4–1 — NPT threads; size depends on flow rate.ANSI B1.20.1 |
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| Operating Temperature Range | -10–+60 °C | -10 to +60 — Ambient temperature for control cabinet; process gas temperature may be higher. |
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| Duty Cycle | Continuous | Continuous — Designed for 24/7 operation in steel plants. |
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| Service Life | 10–15 years | 10–15 — With regular maintenance; seals may need replacement every 2–3 years. |
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| Power Supply | 230 VAC, 50 Hz or 24 VDC | 230 VAC, 50 Hz or 24 VDC — For control system and actuators.IEC 60038 |
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| Control Interface | 4–20 mA, Modbus RTU, Profibus DP | 4–20 mA, Modbus RTU, Profibus DP — Analog and digital communication options.IEC 61158 |
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| Ingress Protection | IP54 (dry areas), IP65 (washdown) | IP54 (dry areas), IP65 (washdown) — For control cabinet and field devices.IEC 60529 |
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| Ambient temperature | -10–+60 °C | -10 to +60 °C — Outside this window: Below -10°C: seals may become brittle; above +60°C: electronics may overheat, causing control failure. |
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| Inlet gas pressure | 2–10 bar | 2–10 bar — Outside this window: Below 2 bar: insufficient flow; above 10 bar: risk of overpressure damage to regulators and flow meters. |
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| Gas purity | ≥99.99% for Ar, ≥99.9% for N2 | ≥99.99% for Ar, ≥99.9% for N2 — Outside this window: Impurities can clog orifices and affect degassing efficiency; moisture can cause corrosion. |
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| Flow rate | 50–500 L/min | 50–500 L/min — Outside this window: Below 50 L/min: inadequate gas coverage; above 500 L/min: may cause excessive turbulence and metal splashing. |
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| Control accuracy | ±0.5–1.0% of set point | ±0.5–1.0% of set point — Outside this window: Worse accuracy leads to inconsistent degassing, affecting metal quality. |
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