Sample interview questions: Can you explain your knowledge of different types of pressure reducing valves used in hydronic systems and their applications?
Sample answer:
Types of Pressure Reducing Valves in Hydronic Systems
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Automatic Pressure Reducing Valves:
- Maintain a constant downstream pressure regardless of inlet pressure fluctuations.
- Ideal for applications where downstream components require a specific pressure range, such as boilers, pumps, and fixtures.
- Available with spring-loaded or diaphragm-actuated mechanisms for precise pressure control.
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Thermal Pressure Reducing Valves:
- Regulate pressure based on temperature changes in the system.
- Used to reduce pressure during system expansion due to heating, preventing damage to components.
- Often installed upstream of expansion tanks to protect against excessive pressure.
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Pilot-Operated Pressure Reducing Valves:
- Use a separate pilot valve to control the main valve, providing greater accuracy and response time.
- Capable of handling high pressure drops with minimal pressure fluctuations.
- Suitable for applications requiring precise pressure regulation, such as industrial processes and critical equipment.
Applications
- Boiler Protection: Maintain a constant pressure to prevent damage to boi… Read full answer
Source: https://hireabo.com/job/12_0_14/Hydronic%20Technician