VVEP-HL - 2 Pages

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Catalogue excerpts

VVEP-HL series:  Maintains even distribution while minimizing variation in spray angle even when spray pressure is changed.  Effective particularly for small spray flow control at low pressures. Having a large turndown ratio of spray flow-rate, VVEP-HL is optimal for applications where spray capacity needs to be changed depending on the spray target and applications. Applications ■Cooling: Spray angle variation is minimal even if spray capacity is decreased to 1/5. Comparison with conventional nozzle Steel plate, cast steel, cast metal, extruded aluminum, ■Cleaning: Steel plate cleaning after pickling ■Others: Applications which require a large turndown ratio ★Ideal for hydraulic spray cooling which requires changing of spray capacity, especially for upper zone and under molding of continuous casting machines, and for control cooling. 【Conventional flat spray nozzle】 【Large turndown nozzle】 Low pressure, Small spray flow Optimized spray nozzle and alignment Low pressure, Small spray flow Spray angle narrows Spray flow and impact distribution deteriorate Causes spray gaps! VVEP-HL nozzles, arranged with appropriate nozzle spacing, can achieve uniform cooling and cleaning with wide spray flow range, as VVEP-HL minimizes spray angle variati

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【Comparison of interference spray impact in pressure changes】 【Relation of pressure and spray angle】 Spray capacity: 23L/min(at 0.3MPa) Standard flat spray nozzle Large turndown ratio nozzle Pressure (MPa) Nozzle with large turndown ratio(VVEP100230HL) Spray impact 打力(×10 -2 N/cm) -2 (x10 N/cm) (SPRAY IMPULSE) Standard flat spray nozzle(VVP115230) Spray impact -2 打力(×10 N/cm) -2 (x10 N/cm) (SPRAY IMPULSE) ノズル直下からの距離(mm) Distance from center (mm) (DISTANCE FROM CENTER) ノズル直下からの距離(mm) Distance from center (mm) (DISTANCE FROM CENTER) [At spray pressure 0.7MPa] 0.5 Higher pressure, Larger spray capacity -2...

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