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What is an excess flow valve?
A valve that shuts off flow of gas when flow exceeds a predetermined amount. A small hole allows trace amounts to escape, equalizing pressure.
This is a safety in case a hose is severed.
What is Tare weight?
Weight of cylinder when empty.
What is the purpose of a spit valve?
The determine when the cylinders full.
What is the purpose of an OPD?
To prevent the cylinder form over filling.
How does an OPD work?
Uses a special float that rises during refilling to block the filling process when the cylinder is 80% full.
When is a plug or cap required in the valve or propane cylinder?
When it has propane in it.
What is the maximum size of the bleed opening in a spit valve?
Orifice size 54
What is the minimum distance the combustibles ( weeds and grass included) must be kept clear of a Propane Cylinder?
10 feet
What must be done with a brand new cylinder before filling?
Purged of moisture and Air
What is the purpose of a line relief device ?
To protect appliances and equipment from over pressuring
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