2230 / 4430 2-Way Temperature Sensing Valves
The AMOT 2230 and 4430 2-Way Temperature Sensing Valves are compact, fail-safe thermal control devices that open automatically as temperature increases, venting control pressure to prevent overheating. These normally closed valves are ideal for controlling engine cooling water, lubricating oil, bearing, or packing temperatures in diesel, gas, and industrial systems.
Model 2230 features a durable brass body, while Model 4430 is constructed from 316 stainless steel for enhanced corrosion resistance. Each unit uses a wax-element sensing mechanism to provide consistent, repeatable performance without electrical power. Factory-set temperature ranges are available from 30°C to 118°C (95°F–245°F), with a high-temperature option up to 129°C (265°F).
For integrated system protection, pair these valves with AMOT Thermostatic 2 Way Control Valves to achieve full thermal regulation across engines and process equipment.
Key Features & Benefits
- Factory set and field adjustable for precise trip temperature control
- Operates in hydraulic, oil, or gas systems
- Brass (2230) or stainless steel (4430) construction for long service life
- Viton® seals standard for superior chemical and temperature resistance
- Compact, rugged design with few moving parts for low maintenance
- No electricity required — fail-safe operation
- Compatible with AMOT master safety shutdown systems
- Certified for PED and ATEX II 2G TX X compliance
- Withstands pressures up to 8.6 bar (125 psi) at the inlet port
| 2230D Standard materials: | Body & Nut: Element: Extensions: Seals: |
Brass Brass Brass Viton |
| 4430B Standard materials: | Body & Nut: Element: Extensions: Seals: |
316 SS Brass 316 SS Viton |
| Max. pressure on temp. element: | 55.2bar | 800 psi |
| Max. pressure at IN Port: | 8.6 bar | 125 psi |
- Engine and compressor exhaust gas.
- Gear box lubrication
- Engine oil and compressor lube oil temperatures
- Engine jacket water temperature
