Digital guide
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Woodward 8915-416
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Product Name: 3103 Gas Valve with TM55I Electro‑Hydraulic Integral Actuator
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Introduction: 3103 rotary‑sleeve metering valve paired with the TM55I integrated electro‑hydraulic integral servo actuator. The integral characteristic eliminates steady‑state error while mechanical feedback guarantees dynamic accuracy, making it suitable for precision fuel‑metering loops on industrial gas turbines.
Detailed content
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Structural Characteristics: 3103 rotary‑sleeve metering valve; TM55I integrated electro‑hydraulic integral servo actuator; adapter plate with adjustable limit switch.
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Working Principle: Electronic control current is amplified by the torque‑motor servo valve to control hydraulic oil that drives the servo piston, rotating the metering sleeve to regulate fuel flow. The integral characteristic eliminates steady‑state error; mechanical feedback guarantees dynamic accuracy.
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Installation Requirements: Hydraulic system cleanliness ISO 4406 20/18/15; 10 μm supply filtration; fuel‑gas inlet filtration meeting particle‑size requirements; any‑orientation installation with ensured wiring and hydraulic‑interface accessibility.
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Precautions: Periodically test hydraulic oil contamination grade; replace clogged filters promptly; valve calibration data must match the physical serial number; integral‑parameter configuration must comply with system requirements.
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Key Parameters (per the 3103/TM55I family):
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Gas flow range: 23 to 18,144 kg/h (50 to 40,000 lb/h)
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Inlet pressure: up to 6,206 kPa (900 psia)
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Differential pressure: 172 to 6,206 kPa (25 to 900 psi)
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Hydraulic supply: 2,758 to 6,895 kPa (400 to 1,000 psi)
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Angular stroke: max 45°
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Stall torque: 38 N·m @ 2,758 kPa; 95 N·m @ 6,895 kPa
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Time constant: 0.025 s
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Input signal: 20 to 200 mA
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Metering accuracy: ±5% of point or ±0.25% of maximum flow
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Valve body: stainless steel; internal parts: hardened stainless steel
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Actuator housing: anodized aluminum
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Seals: Viton A
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