We test to 72 hours at elevated temperature and humidity because I want to know how our fittings will perform in a truck that's been operating through a Midwest winter with deferred maintenance. What ...
DOT brass fittings must pass3x proof pressure and 4x burst pressure tests per FMVSS 106 (49 CFR §571.106). NHPC tests every production lot at 150% of rated proof pressure, exceeding the federal ...
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