North American Venturi Nozzle is an accurate and repeatable flow meter with proven performance.
North American 8632 Venturi Meters are used for measuring air or fuel flow rates in combustion systems. Typically deployed when the available pressure is low and a very low permanent pressure loss is of value. Venturi meters can recover as much as 97% of their operating pressure differential compared with the 48% recovery of an orifice plate having the same beta ratio. This low permanent pressure loss can greatly reduce fan power consumption on combustion air systems leading to significant payback over the life of a combustion system. 8632 Venturis are more dependable, robust and require less maintenance than alternatives such as thermal dispersion meters and turbine meters.
8632 Venturis consist of a SST shell with standard Class 150 raised face ANSI flanged end connections. They are available in 3” through 8” pipe sizes for design air flow rates of approximately 13,500 to 1,900,000 standard cubic feet per hour (362 to 51,000 normal cubic meters per hour). 8632 Venturis come with a data sheet calculated from the ISO 5167 venturi flow equation providing flow versus differential pressure data at standard and at actual conditions. A range of standard 8632 venturi sizes facilitates selection.
SPECIFICATIONS
Venturi Meter
• Design Fluid Duty:
Ambient Air, Natural Gas, Propane, coke oven gas, productos of combusion, special fuels*
• Materials of Construction:
Machined 304 or 316 stainless steel (see ordering information)
• Sizes:
3"- 8" NPS flange type does not effect I.D
• End Connections:
ANSI Class 150, raised face
• Maximum Fluid Temperature: • Maximum Ambient Temperature:
900°F 900°F
• Design inlet Pressure: • Standard Flow Accuracy:
-2 psig to 30 psig
3%-5% for flow at 150,000 to 2,000,000 Reynolds Number (Re)
• Flow Accuracy for Calibrated 8632 Venturi:
1% at points of calibration
• Installation:
Horizontal
• Standard Beta Ratio
0.7
* Contact engineering with fuel composition for special fuels
Bulletin 8632 page 2
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