Cast iron flap valves - Pressure relief valve calibration - John deere hydraulic valve.
Cast Iron Flap Valves
- (Flap valve) A hinged flap within a plumbing system that restricts water flow to one direction, preventing backflow.
- (Flap Valve) Same as "Check Valve." -- A valve arranged to permit a flow in one direction only, thereby preventing the return of the fluid.
- A valve opened and closed by a plate hinged at one side
- A hard, relatively brittle alloy of iron and carbon that can be readily cast in a mold and contains a higher proportion of carbon than steel (typically 2.0–4.3 percent)
- Firm and unchangeable
- Cast iron usually refers to grey iron, but also identifies a large group of ferrous alloys, which solidify with a eutectic. The colour of a fractured surface can be used to identify an alloy.
- an alloy of iron containing so much carbon that it is brittle and so cannot be wrought but must be shaped by casting
- extremely robust; "an iron constitution"
twigs on blue field
Location: Well Walk, London NW3
Materials: Cast Steel, Concrete, Blue Paint, Twigs, Seeds, Rainwater
Finder's Comments: This blue paint is used when the utilities contractors are marking out items to be fixed/changed/refurbished.
Submitted by: halfbeak
Vacuum pump 7
Flap valve panels installed.
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