Samson 3730 3730-3 3730-5 Electro Pneumatic Valve Positioners Amot Thermostatic 3 Way 2 Way Temperature Control Valves

This combination pairs the Samson 3730 series electropneumatic positioner with an Amot thermostatic 3-way mixing/diverting valve. The Samson 3730 provides precise pneumatic actuator control via 4-20 mA input, while the Amot valve automatically regulates temperature by mixing hot and cold fluids (or diverting flow) using a self-contained wax-filled thermal element. It is a classic, reliable setup for temperature control loops that need both accurate valve positioning and fail-safe thermal protection.

• Samson 3730: HART communication, auto-calibration, local display
• Amot valve: fully self-acting (no external power needed)
• Fast response to temperature changes
• Fail-safe thermal actuator (wax element)
• Robust for industrial environments
• Easy integration – positioner mounts directly on actuator

• Samson 3730 Positioner
  • Input: 4–20 mA DC
  • Supply Air: 1.4–7 bar
  • Ambient Temperature: –20 to +80 °C (standard)
  • Protection: IP66
  • Communication: HART
• Amot Thermostatic 3-Way Valve (typical models e.g. AMOT 3-way)
  • Temperature Range: Model-dependent (common 18–113 °C)
  • Setpoint Accuracy: ±2–3 °C
  • Pressure Rating: Up to 10–16 bar (model-dependent)
  • Body Material: Cast iron, bronze, stainless steel
  • Connections: Flanged or threaded

• Engine jacket water temperature control
• Lube oil cooling systems
• Heat exchanger bypass regulation
• Industrial process temperature mixing/diverting
• Compressor aftercooler control

A: No – it is fully self-acting using wax thermal element.

A: No – Amot is self-acting. The combination usually means Samson controls a separate control valve in the same loop or system.

Email: edwardzhao@gbsxj.com

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• Samson 3730-0/1/2/3/4/5 variants
• Amot 3-way thermostatic valves (other temperature ranges)
• Pneumatic globe control valves