VISI-FLO® 1400 Series Sight Flow Indicators

visi-flow-1400-series-sight-flow-indicators

Designed for applications with maximum operating pressure of 200 psig (13.8 bar) and/or temperature of 225ºF (107ºC). The option for 3-Day shipping on most items and Bulls-Eye Sight Flow Indicators make the VISI-FLO® 1400 Series Sight Flow Indicators from OPW Global the perfect choice for anyone in need of high-quality and reliable flow monitoring.

  • Exclusive 3-Year “No-Leak” Guarantee: An innovative radial seal creates a constant and uninterrupted sealing force between the body and outside diameter of the glass lens for a longer-lasting and better seal than conventional flat seals
  • Maintenance-Free Design: Bolt-on-body design requires no special maintenance or torqueing sequence in order to prevent leaks, resulting in safer operation than units using tie rods to fasten the lens and seal to the body
  • Dimensional Interchangeability: Feature end-to-end dimensions that match Jacoby-Tarbox and Penberthy and other manufacturers' units. Available in 3/4", 2", 3" and 4" sizes
  • High Vacuum-Service Rating: Rated for vacuum service up to 635 mm (25”) at 85.5% vacuum, which equates to 12.3-psi (0.84 bar) vacuum
  • Four Indicator Styles: Drip Tube, Propeller, Bi-Directional Flapper, Bi-Directional Plane
  • 3-Day Shipping for Most Items

Four Indicator Styles

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Drip Tube – Ideal for gravity, extremely low or intermittent flow. Keeps product from dripping on the glass. Assures constant see-through for vertical lines.

visi_propeller-s

Propeller – The best way to show flow of opaque liquids. Ideal for observation at a distance. Flow from right to left is standard. Specify if left to right flow is needed. Not recommended for flow rates above 100 GPM.

visi_flapper-s

Bi-Directional Flapper – This indicator points in either direction to show you at a glance which way the liquid is flowing.

visi_plain-s

Bi-Directional Plain – When the color and clarity of your liquid are of prime importance.

Order Guide

  • Ordering Units
visi-flo_orderingguide1400-1500

  • Ordering Seal Repair Kits
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  • Ordering Shield Kits Optional - Protecting Your Glass
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Technical

Click on the title below to view the technical information.

Flow Charts

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chart-visi-flow-flapper-driptube
Minimum Flow* Required to Turn Propeller
Size1/43/81/23/411-1/41-1/22
GPM.14.25.30.60.701.051.251.30
*VISI-Flo installed in horizontal position with deflector opening down.
Indicator Option 4" (Low Flow Orifice Plate) Minimum Flow Requirement to Turn Propeller
Size1/43/81/2

Service Ratings

VISI-FLO®Max. PressureMax Temperature1
1400 Series Threaded/ Flanged (1/4"-4")200 PSIG @ 150°F250°F @ 135 PSIG
1400 Series Flanged (6-12")150 PSIG @ 150°F150°F @ 150 PSIG
1500 Series Threaded (1/4"-2")400 PSIG @ 150°F400°F @ 160 PSIG
1500 Series Flanged (3/4"-4")285 PSIG @ 100°F4400°F @ 200 PSIG3
1500 Series Flanged (6"-12")275 PSIG @ 100°F400°F @ 200 PSIG2
  1. With Standard seals
  2. Stainless Steel Units Rated @ 195 PSIG
  3. Stainless Steel Units Rated @ 195 PSIG
  4. Stainless Steel Units Rated @ 275 PSIG

Notes: Alternate seals may result in higher operating temps. Temps up to 500°F possible with High-Temp PTFE Seals

1500 Series units supplied with Canadian Registration Numbers (CRN) carry a 100 PSIG Maximum Allowable Working Pressure at Max Temp of 400F/204C.

Seal & Indicator Operating Terms

SEAL AND INDICATOR OPERATING TEMPERATURES
MaterialDegrees FDegrees C
Neoprene (1400 series standard)-20 to 250-29 to 121
Fluorocarbon (1500 series standard)-20 to 400-29 to 204
Buna-N-20 to 212-29 to 100
EPDM-50 to 250-46 to 121
PTFE-40 to 400-40 to 204
Kalrez®0 to 500-18 to 260
Indicators  
Delrin®-40 to 250-40 to 121
Ryton®-40 to 450-40 to 232
PTFE-40 to 500-40 to 260
High-Temp PTFE / Kalrez®-40 to 500-40 to 260

Construction & Materials

Body:SteelASTM A216 WCB
 316 Stainless SteelASTM A351 CF8M*
 *6"and larger ASTM A351 CF3M (316L) 
 BronzeASTM B62 83600
 Optional Materials:Hastelloy®, Alloy® 20, Monel®, Others upon request
Windows:1400 Series (1/4"-2")Tempered Soda Lime
 1400 Series (3" and Above)Annealed Soda Lime
 1500 SeriesTempered Borosilicate
Indicators:1400 SeriesDelrin®
 1500 SeriesRyton®
 Optional MaterialsPTFE
Seals:1400 SeriesNeoprene (Std.)
 1500 SeriesFluorocarbon (Std.)
Connections:1400 SeriesASME B1.20 FNPT ASME B16.5 150RF
 1500 SeriesASME B1.20 FNPT ASME B16.5 150RF
 Options 
 Socket WeldASME B16.11
 BSPASME BS21
Options:Protective Shield (1400 SK):Polycarbonate Lens Cover
 Pressure/Temperature Probe:Consult Factory

Construction & Materials

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Visi-Flo’s in Vacuum service

  • VISI-FLO sight flow indicator seals, glass lenses, bodies and threaded connections provide sufficient sealing to qualify for vacuum service.
  • Vacuum service rating is up to 635 mm (25”) of Hg (mercury) at 85.5% vacuum. This equates to 12.3 PSI vacuum.

Test Procedures

  Max Pressure (psi)Test Procedure ANSI Rated? 
 ¼” – 2” Threaded 1400 Series  200AYes
  ¼” – 2” Threaded 1500 Series 600BYes (to 400 psi only)
  1” to 12” Flanged 1400 & 1500 Series200/275CYes*
* All flanged VISI-FLO meet requirements for 150 lb. ANSI Flanges.

A = Test at 160 psi +/- 25 psi for one minute. Test at 400 psi +/- 50 psi for one minute B = Test at 160 psi +/- 25 psi for one minute. Test at 650 psi +/- 50 psi for one minute C = Test at 500 psi +/- 50 psi for a period of time specified as per ANSI: 1”, 1½”, 2” sizes for a minimum of 1 minute 3”, 4”, 6” 8” sizes for a minimum of 2 minutes 10” & 12” sizes for a minimum of 3 minutes

Applications

One of the key strengths of sight flow indicators is their remarkable versatility. For example, they can be used:

  • In a variety of industries.
  • To monitor and verify fluid flow through filter, cooling, intake/outlet pumping lines, as well as numerous other industrial processes.
  • For troubleshooting or as backups for meters, switches, process indicators and other control devices.

Following are a series of examples where sight flow indicators can be applied.

Power Plants

  • Newer Power Plants: Sight flow indicators monitor the flow of critical fluids, such as lubricants pumped to turbines in hydro-electric generators and water in cooling lines.
  • Older Power Plants: More reliable sight flow indicators replace aging models (and additional indicators are also deployed) during upgrades.

Waste Water Treatment

VISI-FLO® sight flow indicators visually monitor the filtering process. The most common point of installation: second stage aeration tank pumping lines. The purpose: verify sludge removal to ensure efficient aeration.

Petroleum Industry

Sight flow indicators visually monitor drilling pump operations. VISI-FLO® is used to show dirty fluids being pumped from a down-hole hydraulic cleaning process. Should the indicator stop, this is a signal to the operator that the system is not cleaning properly and needs corrective action.

Chemical Industry

  • Paint and Varnish Processing Plants: VISI-FLO® sight flow indicators are used to notify operators when filters become clogged. Any drops in flow rate or discoloration of blended resins that pass through the press are indications that filters are needed.
  • Distilling Operations: Sight flow indicators are used to gauge color and clarity of fluids. An amber fluid color indicates proper distillation; a brown-to-black color signals the process has been disrupted and requires corrective action.
  • Refineries: Sight flow indicators are used to monitor the draining of water from the bottom of storage tanks. The visual presence of oil in the indicator is a signal that the water is completely drained.

Manufacturing

VISI-FLO® sight flow indicators are used in a variety of manufacturing applications, including, for example, to monitor:

  • The draining of hydraulic oil from nitrogen charged accumulators in die casting machine manufacturing facilities.
  • Proper coolant flow, which is so vital to the operation of welding machines.
  • Efficient filtration of process fluids.

OEM Markets

VISI-FLO® sight flow indicators are used in an array of OEM applications, including, for example:

  • Compressor manufacturers install them on their products so end users can monitor the flow of water to compressor heads while in operation.
  • Degreasing and defluxing equipment manufacturers use them to monitor recirculating solvent in cleaning operations and, thus, determine efficiency of the distillation/recovery process.
  • Evaporators and filtration system manufacturers use them to monitor color and clarity of fluids in outlet lines and to confirm proper intake of fluids on inlet lines.
  • Other potential uses:
  • As a back-up to electronic equipment; seeing is believing.
  • On boiler feed lines
  • With steam traps to know when a clog is developing
  • In a blending operation to see color and clarity
  • On cooling tower lines
  • In distillation processes
  • On paper machine condensate lines
  • On water cooled air compressors
  • At the bottom of a vessel to see if it is empty
  • On lubricating lines of machine bearings
  • On aircraft refueling trucks
  • In solvent recovery systems
  • On desalination equipment
  • Potentially, anywhere that fluids are used, VISI-FLO® can be used!

Parts Breakdown

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KeyDescriptionSeries1/4", 3/8" & 1/2"3/4" & 1"1 1/4", 1 1/2" & 2"
1Retaining Bolt1400 1500H40190M H30497MH40191M H30498MH40191M H30498M
2Washer1400 & 1500H40193MH40194MH40194M
3Nameplate1400 & 1500H30756MH30757MH30758M
4Cap, Plated Steel1400 1500H2888M H30448MH2889M H30449MH2890M H30450M
5Gasket*1400 & 1500H3870MH3871MH3873M
6Glass*1400 1500H5997M H5998MH6001M H6002MH10152M H10153M
7Seal*See Repair Kits   
8Retaining Bridge (2 Required Per Unit)1400 & 1500H5996MH6000MH6004M
9Indicator    
 Propeller-Delrin1400H40153MH40152MH40141M
 Propeller-Ryton1500H2910MH2911MH2912M
 Propeller-PTFE1400 & 1500H40171MH40172MH40173M
 Flapper-Delrin1400H40150MH40149MH40148M
 Flapper-Ryton1500H2944MH2947MH2948M
 Flapper-PTFE1400 & 1500H40196MH40197MH40198M
10Shaft1400 & 1500H5999MH6003MH6011M
11Seal*See Repair Kits   
12Spacer, PTFE*1400 & 1500H31752MH31753MH31636M
13Body    
14Drip Tube1400 & 1500H30357RSH30359RPH30354RP
15Deflector (Propeller Units Only)1400 & 1500H5012MH5018MH5020M
img-visi-flow-parts-breakdown-2
KeyDescriptionSeries3" & 4"6"-12"
1Retaining Bolt1400 & 1500H40192MH40109M
2Washer1400 & 1500H40195MH40194M
3Nameplate1400 & 1500C20190MC20191M
4Cap, Plated Steel1400 & 1500C20136MC30012RS
5Gasket*1400 & 1500H3874MH40108M
6Glass*1400 1500C00665M C00667MH40107M H30368M
7Seal*See Repair Kits  
8Button, PTFE1400 & 1500H40157PH40117RP
9Indicator   
 Propeller-Delrin1400H40154MNA
 Propeller-Ryton1500H40158PNA
 Propeller-PTFE1400 & 1500H40174MNA
 Flapper-Delrin1400H40148MNA
 Flapper-Ryton1500H2948MNA
 Flapper-PTFE1400 & 1500H40198MNA
10Shaft1400 & 1500H40155MH40116RE
11Lockwasher, SST1400 & 1500H5162M 
12Retaining Screw/Bolt1400 & 1500H40155MH40144RP
13Body   
14Drip Tube   
15Indicator Support Arm1400 & 1500C30025EWH40114RS

Downloads

VISI-FLO Reference Drawings

Need help? Contact support.

Customer Support

Reach Out to Our Customer Support Team for Prompt Assistance and Answers to Any Questions or Concerns You May Have

Technical Support

Contact Us for Technical Support on Your Projects and Resolving Any Technical Issues You Encounter

Contact a Distributor

Locate a Nearby Distributor for Replacement Parts

Product Enquiry

Product Information request form to find the right solution

Need help? Contact support.

Customer Support

Reach Out to Our Customer Support Team for Prompt Assistance and Answers to Any Questions or Concerns You May Have

GET SUPPORT

Technical Support

Contact Us for Technical Support on Your Projects and Resolving Any Technical Issues You Encounter

GET SUPPORT

Contact a Distributor

Locate a Nearby Distributor for Replacement Parts

CONTACT A DISTRIBUTOR

Product Enquiry

Product Information request form to find the right solution

PRODUCT ENQUIRY