Thermostatic
Four thermostatic insterts, controllers in the three way valve of our fresh coolingwatersystem.
It wasn't opened for years, so it was about time. Still working well, just a bit of sludge in the main housing of the valve. Still going strong after over 65 years....
189
views
- 6
- 0
- Nikon D7000
- 1/50
- f/4.0
- 28mm
- 1250
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