Pipe Adapter: G-1/2 Female to NPT-1/2
thingiverse
Pipe Adapter - G-1/2" (BSPP) Female to NPT-1/2" Male A lot of the inexpensive electric valves, flow sensors etc on Amazon and Aliexpress use international G (BSPP) threads which are close but not compatible to the North American NPT. This adapter solves that problem for low pressure applications. I recommend printing 100% infill and a short acetone soak (10s with PETG) followed by a few hours drying to seal up any porosity. You are responsible for code compliance in your locality.
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