product id: 104101
The Hedland Flow Meter for Petroleum Fluids is a rugged, yet low cost variable area flow meter. These in-line flow rate indicators are industrial class and are ideal for petroleum and petroleum-based fluids. These Hedland flow meters can be used in applications in which the temperature ranges from -20 to 400°F (continuous) and 400 to 500°F (intermittent).
Hedland Flow Meter for Petroleum Fluids Series feature quality metal construction in aluminum, brass, or stainless steel. The aluminum and brass models of variable area flow meters are rated for operating pressures up to 3500 PSI/241 bar maximum with a 3:1 safety factor. The stainless steel model is pressure rated for 6,000 psi/414 bar maximum (5,000 psi/345 bar maximum for 3/4" to 1-1/2" series) with a 3:1 safety factor. You can choose from seven port sizes from 1/4" to 3".
All Hedland variable area flow meters use a sharp-edged annular orifice, formed between the open-centered piston and a contoured metering cone. The piston is held in a "no flow" position at the base of the contoured cone by a calibrated retention spring. Flow through the meter creates a differential pressure across the piston orifice, moving the piston against the spring. The greater the volume, the further the piston moves. Externally, the flow indicator is magnetically-coupled to the moving piston. The indicator is visually "read" against a graduated flow scale.
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