1624AVMA4AA13D00A is a configured Brooks Instrument GT1600 Series glass-tube variable-area flowmeter identifier observed in Sonisys auction records and distributor/surplus listings. Official Brooks GT1600 documentation decodes the model code as a 127 mm high-flow meter with vertical inlet / vertical outlet orientation, VM maximum-flow code, 316 stainless steel fittings, 1 inch high-flow female NPT process connections, Viton O-rings, direct-reading scale, +/-2% full-scale accuracy option, no integral valve, no alarm, and no hazardous-area approval option. The observed 2-20 GPM scale wording is retained as listing/distributor context; service fluid, scale markings, tube condition, float movement, pressure rating, and installation fit should still be verified from the physical meter
Configurations vary. Verify the exact unit before choosing a replacement.
Application classIndustrial automation and process equipment
CategoryFlow Control
Specifications
Identification
Configured model code
1624AVMA4AA13D00A
Device type
Glass-tube variable-area flowmeter / rotameter
Series family
Brooks Instrument GT1600 Series industrial glass-tube variable-area flow meters for liquids and gases
Model code
Base meter family
16 = large glass tube flowmeter
Tube length and flow class
2 = 127 mm high-flow configuration
Process orientation
4 = vertical inlet / vertical outlet
Model-code release
A = initial global model-code release
Flow
Configured maximum flow code
VM = 20 GPM water / 4700 l/h water, with air-capacity context of 80.4 SCFM / 143.2 m3n/h at reference conditions; the GT1600 table also lists higher parenthetical air flow at 30 psig back pressure for this code
Configured tube and float
VM corresponds to tube R-10M-127-3FT with float 10-XJ-238-A
Materials
Configured fitting material
A = 316 stainless steel fitting material
Family wetted materials
GT1600 documentation lists borosilicate-glass metering tubes, 316/316L stainless steel process fittings, 316/316L stainless steel floats for tube sizes 7 through 10, Teflon float stops, and selectable O-ring materials
Connections
Configured connection size
4 = 1 inch high-flow connection size
Configured connection type
AA = standard / GT1000 retrofit female NPT process connection
Seals
Configured O-ring material
1 = Viton fluoroelastomer O-rings
Scale
Configured scale
3 = direct-reading scale
Performance
Configured accuracy option
D = +/-2% full-scale meter accuracy
Repeatability
GT1600 family documentation lists repeatability at <=0.5% full scale
Valve and alarms
Configured valve option
0 = no integral valve
Configured alarm option
0 = no alarm
Approvals
Configured approval option
A = no approvals
Operating principle
Variable-area operation
Brooks GT1600 documentation describes operation with a tapered glass tube and float; the float rises until the annular area balances gravity and fluid forces
Construction
Frame and shield
GT1600 family documentation lists a 316 stainless steel housing/frame and polycarbonate window/safety shield with UV inhibitor
Pressure
Size 10 high-flow pressure context
For GT1600 tube size 10, the family data sheet lists maximum operating pressure of 175 psi / 12.1 bar for threaded and flanged process connections; actual process suitability depends on configuration, fluid, temperature, and unit condition
Temperature
Ambient temperature limit
GT1600 family documentation lists -4 F to 125 F / -20 C to 52 C ambient temperature limits
Operating fluid temperature limit
GT1600 family documentation lists 33 F to 250 F / 1 C to 121 C operating fluid temperature limits
Serviceability
Tube and float service
GT1600 documentation describes tube and float cleaning or replacement without removing the meter body from process piping
Safety
Glass tube fluid caution
Brooks documentation warns not to use glass tube meters with toxic fluids or fluids that chemically react with glass, including water above 140 F / 60 C, steam, alkalis, fluorine, hydrofluoric acid, and molten metal
Applications
Application domain
Industrial liquid or gas flow indication, purge service, seal oil systems, bearing lubrication, cooling-water indication, and general process applications where visual flow indication is required
