A common question regarding our Antunes JD-2 air switches is 'what does the spring color mean?'. Here you go:

We stock blue, grey, red, purple and orange springs. The main difference is w.c. which stands for water column. I tried to find an easy explanation of water column and was not successful! If you need additional help our tech department is always available.

• Grey, 1-4" w.c.(801111302)
• Red, 1-24" w.c. (801111303)
• Blue, .07-1.7" w.c. (801111301)
• Purple, .1-10" w.c. (801111310)
• Orange, 5-35" w.c. (801111315)

 

Our Antunes JD-2 air switches are made of rugged die-cast aluminum and feature adjustable setpoint, setpoint indication and visible on/off indicator. 

Marshall Wolf Automation is your authorized industrial automation distributor for the complete line of Antunes air and gas pressure switches!

Antunes Controls’ new line of gas pressure switches monitors gas pressure and breaks the electrical control circuit when pressure drops below or rises above the desired setpoint.

The gas pressure settings are adjustable and available in automatic or manual reset operation. These switches are sturdy and constructed with a durable plastic electrical enclosure and a die-cast aluminum inlet base.

Other features include:

 

• Compact design
• Accurate
• Adjustable setpoints
• Automatic or manual reset
• Ventless
• Cost-effective pricing
• Mounts to any modular valve body

Marshall Wolf Automation is your authorized industrial automation distributor for the complete line of A.J. Antunes industrial pressure switches including the long popular Antunes JD-2 series.

Learn more about the Antunes Versa series now!

The popular Antunes JD-2 series was created when the founder, August Antunes, saw an opportunity.

UL had created a new safety standard for industrial ovens that required them to have air and gas pressure sensors. 

Antunes created a simple and affordable switch that was a success! Today Antunes products can be found almost everywhere... and the earliest switches are still used with only minor design improvements.

 

 

The compact and sensitive Antunes JD-2 switches are made of rugged die-cast aluminum and feature adjustable set point, set-point indication and visible on/off indicator.

They’re available in five range scales and deliver the accuracy and reliability you can depend on.

• Rugged die-cast aluminum construction
• Custom design per OEM specifications available
• Cost-effective pricing
• Dual scales calibrated in millimeters and inches of water column
• Visible ON-OFF indicator

You can choose from the following Antunes JD-2 options:

1. Antunes JD-2B (801111301) blue spring, .07" to 1.7" W.C.
2. Antunes JD-2G (801111302) grey spring, 0.1" to 4" W.C.
3. Antunes JD-2R (801111303) red spring, 0.1" to 24" W.C.
4. Antunes JD-2P (801111310) purple spring, 0.1" to 10" W.C.
5. Antunes JD-2O (801111315) orange spring, 5" to 35" W.C.

Marshall Wolf Automation is your authorized Antunes distributor and offers you more than 30% off list price! You can easily order online and we generally have these in stock, ready for same day shipping.

Today's 'My Automation Education' is going to focus on another niche type product: Antunes JD-2 air switches. These compact, sensitive Antunes JD-2 switches are made of rugged die-cast aluminum and feature adjustable set point, set-point indication and visible on/off indicator. They’re available in five range scales and deliver the accuracy and reliability you can depend on.

They come in the following range scales that are measured in water column:

◦Grey, 1-4" w.c.(801111302)
◦Red, 1-24" w.c. (801111303)
◦Blue, .07-1.7" w.c. (801111301)
◦Purple, .1-10" w.c. (801111310)
◦Orange, 5-35" w.c. (801111315)
 

Water column is a measurement of pressure for gases and can be converted to PSI if needed. It is used for measuring small pressure differences across an orifice, or in a pipeline or shaft. Inches of water can be converted to a pressure unit using the formula for pressure head. It is defined as the pressure exerted by a column of water of 1 inch in height at defined conditions.

I have sold quite a few of these the last couple days! Since I had no idea what the heck they were used for I consulted our excellent technical department for an example how they are used. This is the example they gave me:

Imagine you are in a lumber mill that cuts and stacks plywood. There is not enough room in the line to slide the sheets of plywood around, so they need to be lifted straight up. When this process is automated they use suction to move the sheets around. However, because of the way the product is stacked, with its large surface area, there is a pretty strong vacuum that develops, holding the sheets together. In order to separate the sheets a short burst of air is blown between the sheets to break the vacuum, allowing the suction to be one quarter what it otherwise would need to be. The Antunes JD-2 allows for the measurement of the air pressure in the suction hoses to alert the air bursts when the plywood has been picked up so the air is blown at just the right time.

That is one specific example of many where the JD-2 air pressure sensors can be used. Give our tech team a call if you have any questions regarding an application. Marshall Wolf Automation, the only industrial automation distributor you need, is happy to spend the time finding the correct product for any application. Give us a call or check out our website...you won't be sorry!

Our Antunes JD-2 pressure switches are compact and made of rugged die-cast aluminum.

The Antunes JD-2 series feature adjustable setpoint, setpoint indication and an ON/OFF indicator.

They are available in five range scales and you can count on their accuracy and reliability.

 

Even more important, Marshall Wolf Automation has the Antunes JD-2 series in stock!

View pricing and place your order online today for Antunes JD-2 pressure switches.

 

I was recently organizing our pressure sensor category and made an innocent Google search to find out a little bit more about this line of products. Wow.

My good pal Wikipedia had this to say:

'A pressure sensor measures pressure (okay, really? I get that.), typically of gases or liquids'.

'Pressure sensors are used for control and monitoring in thousands of everyday applications.'

'Pressure sensors can also be called pressure transducers, pressure transmitters, pressure indicators, among other names.'

Obviously pressure sensors can be used for everything from tire pressure to atmospheric pressure to detecting a fluid leak. There are endless applications for these sensors... please keep in mind that we handle only the industrial side of them!

We have digital pressure sensors (or digital pressure transducers if you prefer) and analog pressure transmitters (pressure sensors). 

We carry everything from the classic A.J. Antunes JD-2 series of air pressure switches to digital, compact pressure sensors.

Marshall Wolf Automation is your authorized industrial automation distributor for all top brands of pressure sensors!

Marshall Wolf Automation can help you find that JD-2 part you are trying to replace!

The JD-2 is actually an air switch manufactured by Antunes. We are an authorized industrial automation distributor for the full line of Antunes gas and air pressure switches!

Available in JD-2 grey, red, blue, purple or orange you can easily order these air switches now!


Marshall Wolf Automation is your industrial supply distributor for a large range of replacement and OEM products including safety, air and gas switches!

See pricing and order Antunes JD-2 air switches online now!
Search all of our A.J. Antunes gas and air switches!

Did you know Marshall Wolf Automation is an industrial automation distributor for the A.J. Antunes line of air and gas pressure switches?

The popular JD-2 series includes JD-2 Blue, JD-2 Grey and JD-2 Red. Less common spring colors include orange and purples also.

You can easily order the Antunes JD-2 series online with a great discount and quick shipping!

Other popular Antunes air and gas switch series also available at www.WolfAutomation.com include:
SMD, SML, SMR, HGP/LGP-A, RHGP/RLGP-A, HGP/LGP-H and RHGPRLGP-H

View our entire line of Antunes air and gas pressure switches now!

The Antunes JD2 series of gas pressure switches are available from stock for immediate shipment! We compete with Eclipse!

Part Numbers include:
JD-2 Grey, red, blue, purple or orange spring
Model #'s: 801111302, 801111303, 801111301, 801111310, 801111315

Marshall Wolf Automation is your stocking industrial automation distributor for the full A.J. Antunes line of air and gas switches!