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Technical Support FAQ

Model VB-1 / VB-3 Valve Box

What flow controller is used in the product? What are its wetted parts?
What is the particulate size for the filter in the unit?
At what flow rate does the flow switch trigger?
What are the voltage input and output thresholds for the digital inputs and outputs of the VB product line?
The VB-1 uses inch tubing. Is there an alternative for (mm) tubing?
Can I get more information on the flow controller used within the VB-1?
What flow switch is used in the product?
What are the wetted materials in the Chem Tec flow switch?
What is the hysteresis in the flow switch?
The VB-1 has two types of flow meters. What are their Teledyne part numbers, the manufacturers' part numbers, and the wetted materials in each?
Regarding the valves in the VB-1, what is the maximum inlet pressure? What are the wetted materials?
What is the TAI part number and the manufacturer and their part number of the valve used in the VB series?
What is the TAI part number for the solenoid valve with the connector on it?
We wish to power up the analyzers to prove out the Profibus communications between the valve boxes and our DCS (assigning addresses, etc) in the next few days. Without reading the specifics of all the operating manuals, can you tell me if there are any issues with providing power to them to perform this check. We will not have any gases available at this point in time.

Also is there anything we should know in advance regarding assigning the specific addresses to the valve boxes?
What is the maximum Profibus cable length between the VB-1 and my system?


What flow controller is used in the product? What are its wetted parts?

VICI Metronics Inc. Condyne Div., FC30AS4K with stainless steel fittings 6-0016-0

The wetted parts are : Aluminum, Stainless Steel, Viton O-Rings, and a Nylon washer

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What is the particulate size for the filter in the unit?

10 microns


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At what flow rate does the flow switch trigger?

Less than or equal to 0.4 standard liter per minute (SLPM).


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What are the voltage input and output thresholds for the digital inputs and outputs of the VB product line?

Aux Input Parallel port pin Aux Output Parallel port pin
Aux In 0 19 Aux Out 0 11
Aux In 1 20 Aux Out 1 12
Aux In 2 21 Aux Out 2 13
Aux In 3 22 Aux Out 3 14
Aux In 4 23 Aux Out 4 15
Aux In 5 24 Aux Out 5 16
Aux In 6 25 Aux Out 6 17
    Aux Out 7 18



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The VB-1 uses inch tubing. Is there an alternative for (mm) tubing?

We can supply adapters that will change the inch tubing to (mm). This will increase the length of the instrument by 1.25".




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Can I get more information on the flow controller used within the VB-1?

Here are the pertinent specifications about the flow controller direct from the manufacturer.


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What flow switch is used in the product?

Here are the pertinent specifications about the flowswitch provided by the manufacturer.


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What are the wetted materials in the Chem Tec flow switch?

The 125 series has material options of 316 stainless steel, brass or Teflon. This would be indicated by the part number. The Chem-Tec part number is 125-316-NO. The wetted material in this unit is 316 stainless steel, epoxy and viton.


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What is the hysteresis in the flow switch?

The hysteresis is 30% above the set point.


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The VB-1 has two types of flow meters. What are their Teledyne part numbers, the manufacturers' part numbers, and the wetted materials in each?

TAI part number F1263 is King's PN 7520-3301C0-0TE. Wetted parts are: cast acrylic, 316SS, Sapphire float, and PVC float stops.

TAI part number F1902 is King's PN 7530-3322C0-0TE. Wetted parts are: cast acrylic, 316SS, Titanium float, and Viton seals.


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Regarding the valves in the VB-1, what is the maximum inlet pressure? What are the wetted materials?

The maximum inlet pressure is 50 psi.

The wetted parts are stainless steel and a EPDM seal.


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What is the TAI part number and the manufacturer and their part number of the valve used in the VB series?

TAI PN = V871

Manufacturer: Numatics, part number LS2-0089


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What is the TAI part number for the solenoid valve with the connector on it?

V948


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We wish to power up the analyzers to prove out the Profibus communications between the valve boxes and our DCS (assigning addresses, etc) in the next few days. Without reading the specifics of all the operating manuals, can you tell me if there are any issues with providing power to them to perform this check. We will not have any gases available at this point in time.

Also is there anything we should know in advance regarding assigning the specific addresses to the valve boxes?


You can power up the valve boxes without gas being applied. You may get a warning or two, such as flow fault because of this, but the valve box keeps running.

As to Profibus addresses, just make sure to start with 2 as address 1 is reserved for the master, and do not repeat the address number.


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What is the maximum Profibus cable length between the VB-1 and my system?

9.6 - 187.5 KB/s - 1,000 meters (3,280 feet)
500 KB/s - 400 meters (1,310 feet)
1.5 MB/s - 200 meters (656 feet)
3 - 12 MB/s - 100 meters (328 feet)


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