Webster OSVA-38 Oil Safety Valve 3/8 voomi_id_16817 The Bard EHWA42C-A15 is a

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Webster OSVA-38 Oil Safety Valve 3/8 voomi_id_16817 The Bard EHWA42C-A15 is aProduct Description The Webster OSVA 38 is a three eighths inch oil safety valve designed for use in oil supply systems with inlet pressures ranging from zero to sixty psi. This valve requires a sustained vacuum at the outlet for the fuel to flow toward the burner pump. In the event of a line break, the OSVA 38 automatically shuts off the oil supply. Many local and state codes mandate the use of this device as it limits the inlet pressure on burner