Discussion Overview
The discussion revolves around the search for a valve that allows for precise control of a small opening, specifically in the range of 3mm to 1cm. Participants explore the suitability of solenoid valves and alternatives for achieving variable flow control.
Discussion Character
- Exploratory, Technical explanation, Debate/contested
Main Points Raised
- One participant inquires about the possibility of adjusting the opening of a solenoid valve using an electric signal.
- Another participant suggests that solenoid valves are typically not variable and recommends considering servo or proportional control valves instead.
- A third participant mentions the Asco SD8202 series as a proportional valve option, noting its ease of setup and orifice sizes down to 3/64", but does not comment on cost or accuracy.
- One participant questions whether remote flow rate adjustment is necessary and explains that a flow control (needle valve) is often used in conjunction with a solenoid to manage flow rate, typically requiring manual adjustment.
- A later reply highlights a company, Bauman, that produces an actuated needle valve controlled by dome loaded air, noting its higher cost compared to solenoid valves but better flow characteristics.
Areas of Agreement / Disagreement
Participants express differing views on the capabilities of solenoid valves, with some suggesting alternatives like proportional valves and needle valves. The discussion remains unresolved regarding the best solution for precise flow control.
Contextual Notes
Participants do not provide specific details on the limitations or assumptions of the valves discussed, nor do they clarify the conditions under which different types of valves may be preferable.