Brooks Instrument Sho-Rate Model 1358 Variable-Area Flowmeter
About this part
1358CB1C1CAA is a Brooks Instrument flow-rate-indicating meter in the Sho-Rate Model 1358 variable-area flowmeter context. Official Brooks Model 1358 documentation identifies the 1358 series as a Sho-Rate Size 8 glass tube rotameter with direct-reading flow scales, borosilicate glass metering tube, optional needle valve configurations, and 3/8 inch NPT connection options. The current official Brooks model-code table is built around the 1358F base code and does not provide a complete exact decode for the shorter 1358CB1C1CAA identifier, so current family specifications are kept separate from exact observed and NSN-style characteristics. Verify the physical scale, label, end-fitting material, elastomers, and valve orientation before using the unit for service or replacement
Configurations vary. Verify the exact unit before choosing a replacement.
Application classIndustrial automation and process equipment
CategoryFlow Control
Specifications
Identification
Configured part identifier
1358CB1C1CAA
Device type
Flow-rate-indicating meter / glass tube variable-area flowmeter
Series family context
Brooks Sho-Rate Model 1358, Size 8
Exact NSN association
Non-manufacturer NSN-style references associate 1358CB1C1CAA with NSN 6680-01-264-4094 and item name Flow Rate Indicating Meter
Configuration
Current code-table limitation
The current official Brooks 1358 model-code table uses base code 1358F plus nine option positions; 1358CB1C1CAA is shorter and should not be fully decoded from that table without the physical nameplate or an exact build record
Configured-unit rule
Do not infer end-fitting material, seal material, valve side, or calibration solely from the current model-code table for this shorter legacy-style identifier; confirm against the physical label and scale
Flow
Measuring principle
Variable-area flow indication using a tapered borosilicate glass metering tube and float
Model 1358 water capacity context
Brooks Model 1358 capacity tables list water maximum-flow contexts from 0.8 gpm to 5.0 gpm depending on float selection
Model 1358 air capacity context
Brooks Model 1358 capacity tables list air maximum-flow contexts from 3.4 scfm to 15.0 scfm at stated reference conditions depending on float selection
Observed exact-unit range
Exact auction/listing evidence describes this identifier with 0-0.8 gpm context; retain as observed configured-unit evidence, not as a model-wide Brooks 1358 specification
Scale
Family scale options
Brooks Model 1358 documentation lists direct-read graduations on the tube in gpm water or scfm air, or a direct-read metal scale plate mounted beside the tube
Exact-item scale context
NSN-style exact-item characteristics list a GPM direct capacity reading scale with one scale
Performance
Standard accuracy
Brooks Model 1358 documentation lists standard accuracy as +/-10% of full scale from 100% to 10% of scale reading
Repeatability
0.5% full scale
Rangeability
10:1
Pressure and temperature
Family pressure and temperature rating
Brooks Model 1358 documentation lists 200 psig at 33 deg F to 250 deg F / 1 deg C to 121 deg C, with separate 100 psig CRN certification context
Construction
Metering tube material
Borosilicate glass
Exact-item construction context
NSN-style exact-item characteristics describe case design, side-plate construction, one free float, and one metering tube
Connections
Family connection options
Brooks Model 1358 documentation lists 3/8 inch NPT fitting and adapter options in brass or 316 stainless steel, including threaded locknut variants
Observed and NSN-style connection context
Exact auction/listing evidence and NSN-style characteristics describe 0.375 inch / 3/8 inch NPT threaded inlet and outlet context
Controls
Family valve options
Brooks Model 1358 documentation lists no-valve, inlet needle-valve, outlet needle-valve, and flow-controller mounting options depending on configuration
Installation
Mounting position
Brooks Model 1358 installation documentation states the flowmeter must be mounted within 6 degrees of true vertical
Exact-item mounting context
NSN-style exact-item characteristics list direct-line mounting and mounted unit type
Applications
Application domain
Local indication of low liquid or gas flow where the configured scale, materials, pressure/temperature rating, and condition are appropriate
