Jacoby Tarbox Call Us 1-201-419-6111 or sales@nciweb.com


Jacoby Tarbox ® Sight Flow Indicators

Jacoby-Tarbox’s full line of threaded bulls-eye sight flow indicators have been precisely engineered per the design criteria of ASME to provide either a nominal 150 psig rated unit or a full ASME rated for flow observation and indication. Threaded bullseye sight flows have been engineered per the design criteria of the ASME B31.1 & 31.3 Power & Chemical Piping Codes, incorporating only ASTM listed metals in the unit’s construction. This standard setting group of features include full ASME code compliance with regards to yield criteria, materials, and pressure/temperature ratings.

Model 100S Model 100SNF
Click to OpenJacoby Tarbox ® Model 100-S (Flapper Style)
This unit employs a 316SS hinged wheel weighted flapper to indicate flow media.  The velocity of the flow is indicated by the position of the flapper. Uni-directional, these units are optimal for horizontal or vertically upward flows.
Click to OpenJacoby Tarbox ® Model 100-S(NF) (Plain Style)
These units are bi-directional and may be placed in any orientation.  Used primarily in processes where spot indication is desired to detect presence of media, or to inspect color, clarity, turbidity, or other critical characteristics.
Model 200S Model 300S
Click to OpenJacoby Tarbox ® Model 200-S (Drip Style)
Low, intermittent flows are easily detected with this Uni-directional style in the horizontal or vertically downwards direction.  The drip tube forces the process to collect on the lower lip of the 316SS tube, allowing it to visibly drip downward
Click to OpenJacoby Tarbox ® Model 300-S (Rotory Style)
The TFE rotor allows for easy bi-directional, multiorientational flow direction.  The speed  of the rotor indicates the relative velocity of the media.  Ideal for opaque liquids or heavy gases for an easily contrasting detection at far viewing distances.  Extra durable stainless steel rotors are available as an option.
spacerGeneral Specifications:  
Connection sizes range from 1/8" fnpt to 2" fnpt.
Connections per ASME B1.20.1
Standard fasteners (Class 150 models) per ASTM A354 and ASTM A194 complying with most piping specifications.
Borosilicate glass
Units and machined and assembled in an ISO-9001 fully automated facility.
Wetted components meet NACE MR-01-75 / ISO15156-1 requirements.
Stainless steel engraved identification faceplate.
Independently threaded retainers machined from corrosion resistant alloys.
Hex ends on bodies allow for easy installation.
High Temperature (1000ºF) finish on steel and iron bodies.
All units hydro-tested at 1-1/2 times rated pressure.
FULL BORE VISIBILITY: Pipeline view is maximized, in most cases with a diameter that is equal to the nominal pipe size, allowing 100% unobstructed process observation of gases, solids, solutions, and slurries.
Click to Open*** See Jacoby Tarbox ® Phaeton ® Model SL Lighting Option

Sight Flow Indicator with Light

SL is 2" (50mm) and fits 1/4" (6mm) thru 3" (80mm) units

Tank and sight flow indicator lighting has never been simpler. Using the latest LED technology, Phaeton SL Sight Flow Indicator Lights:

Are rated for over 10 years continuous duty... no need to turn on and off.
Consume less than one amp... so they stay cool enough to touch even when on.
Illuminate with cool light, keeping product from baking on the window.
Require no maintenance. Need to clean it? Unclip and wash...no need to disconnect.

Explosion-Proof Power Supply
Class I, Div. 1, Groups B, C, D T4
Class II, Div. 1, Groups E, F, G T4

Intrinsically safe output (Shielded cable)

NEMA 4X rating (Anodized Aluminum Housing, 316SS optional)

Power Supply II 2(2) G Ex d [ia] IIC T6
Light Source II 2 G Ex ia IIC T4

Click to OpenMinimum Flow Rate Requirements
NOM. PIPE STYLE 100-S (GPM) STYLE 100-S (GPM) 300-S (GPM) 400-S (GPM)
1/8" 1.0 1.0 1.0  
¼" 1.5 1.0 1.0 .025
3/8" 2.0 1.0 1.0 .033
½" 4.0 3.0 2.0 .025
¾" 3.5 3.0 2.0 .083
1.0" 5.0 3.0 3.0  
1-1/4" 11.0 8.0 4.0  
1-1/2" 13.0 8.0 4.0  
2.0" 15.0 10.0 10.0  
3.0" STYLE 960-F STYLE 960-F 17.0