At the trail head, one of my common preparation routines just before hitting the trail is to air down to a desired tire pressure for the terrain.  Typically I'd go from one tire to another with an air gauge and letting the air out, checking the pressure, letting more air out and so on until I hit the pressure I wanted ... on each tire.  Later after a long day of 4-wheeling I'd air up before hitting the road home.  On some trips where there was that pressure to hit the trail immediately, and I always felt like I was rushing around, trying to air down, disconnect the sway bar, lock the hubs, put gear in the cab with me, get the drinks in the handy cooler, get the camera ready ... all kinds of stuff.

Airing down took up most of the prep time because was stuck at 4 tires, letting air out and checking the pressure.  As my offroad tires got more serious and I got more serious, my tire pressures got lower.  That just meant I spent more time at each tire airing down.  In the winter, that meant cold air on the fingers.  I hated that.  Maybe I'm getting lazy as I get older but I finally broke down and spent a few bucks on the Staun Tire Deflators.

When I considered buying these I figured it would be nice to screw on a set of these, do the rest of the prepping while they aired the tires down to their pre-set pressure, and stopped.  When I bought them, I found that these Staun Tire Deflators were pretty impressive little tools.  Their brass construction and leather pouch gave them some substance and a heavy duty feel.  The leather pouch is nice, keeping them safe when stashed.

The most impressive thing about these tire deflators is the fact that they are easily adjustable to the tire pressure I wanted to run and are accurate down to .25 psi.  That's 1/4 of 1 psi.  My digital tire gauge isn't that accurate.  They weren't cheap, costing about $55. for the set of 4.  But when I compared it to deflators that didn't stop at any air pressure and just kept deflating until I got back to the tire to check the air pressure, well, why bother?  Even the cost of those wasn't cheap.  So I figured if I was going to buy something, I might as well get something I'll appreciate.

Using these Staun Tire Deflators couldn't be easier.  I just screw them on and walk away.  The pre-adjusted spring loaded pressure regulator stops releasing air when it gets down to the desired pressure.  Then you take them off.  That's it.  No more crouching down with an air gauge or holding the valve stem in with a stick or the pressure gauge.  Adjusting them to the pressure you want to air down to is just as easy.  To do so, you do the following: 1) Deflate a tire down to your preferred tire pressure. 2) With the lock ring and the adjuster cap wound down , you screw the Staun Tire Deflator onto the valve stem.  3) Loosen the cap counterclockwise until the deflator pops open and air begins to release. Then immediately tighten the cap to the position where the air stops releasing.  4) Turn the lock ring up to meet the adjuster cap.  Don't turn the adjuster cap, just screw the lock ring tight up against it.  Do this for each Staun Tire Deflator and that's it.  They adjust at about 3 psi per half turn of the adjuster cap. Once I started using these Staun Tire Deflators, I find they were well worth the money.  Beside the cool factor of airing down without hovering over a tire, they are quick and effortless.  Just be sure that when your buddies borrow them (you know they will), you get them back.

Onboard Air Converting a York AC Compressor to Pump Air

Here's some info from the manufacturer:
Staun Tire Deflators
or Staun Tyre Deflators as the Australian manufacturer calls them.
  

Light Duty - 0-10 psi (code SCVLD)
This deflator has been designed for those who require lower pressure ranges with extreme accuracy. Suitable for competitive Rock Crawlers & Dune Buggies who deflate to as low as 4 - 5 psi with bead locks.

This model comes preset at 7 psi and has an adjustment of 2 psi per half turn and 4 psi per full turn of the adjustment cap. It also only requires 2 psi above its preset pressure to start automatically, but can be manually started by lifting the pin as little as 1 psi above the preset pressure.


Standard - 6-30 psi (code SCV5)
This deflator has been designed to suit most 4WD deflation needs. Suitable for beach or bush pressures it comes preset at 18psi and is accurate to within 0.25psi.

It has an adjustment of 3psi per half turn and 6psi per full turn of the adjustment cap. Requiring 7 psi above its preset pressure to start automatically, they can be started manually by lifting the pin at as little as 2 psi above its preset pressure.


Heavy Duty - 15-55 psi (code SCVHD)
This deflator is designed to deflate to and from higher pressures. It is also accurate to within 0.25psi. Designed for use in the light to heavy trucking industry, it is also suitable for agricultural and farming equipment.

This model comes preset at 35psi and has an adjustment of 4psi per half turn and 8psi per full turn of the adjustment cap. It requires 8psi above its preset pressure to start automatically or can be manually started by lifting the pin at as little as 2 psi above its preset pressure.


Camper Trailer Pack - 4 at 6-30 psi and 2 at 15-55 psi
This unique set comes with 4 Standard deflators and 2 Heavy Duty deflators. Designed to suit those who tow camper trailers and vans off road and on the beach. While your 4WD tyres are deflated to your preferred pressure, the trailer would normally deflate to different pressures based on the weight of the trailer/van.

This set allows you to deflate your 4WD and trailer at the same time without having to adjust your 4WD deflators to deflate your trailer/van. Your 4 Standard deflators are preset at 18psi and the 2 Heavy Duty deflators are preset at 22psi.

How to Deflate:

STAUN TYRE DEFLATORS ARE BY FAR THE QUICKEST AND EASIEST WAY TO REDUCE TYRE PRESSURE - SAY GOODBYE TO THE HASSLE OF FIDDLING AROUND WITH KEYS, MATCHSTICKS OR POOR QUALITY DEVICES.

Basically all you have to do is screw a deflator onto your tyre valve stem and then leave them to do all of the work - YOU DON'T EVEN NEED ANY TOOLS TO USE THEM!

Instructional Video/MP3 - To view an instructional video on how the Staun Tyre Deflators work and see first hand how easy they are to operate please download the mpeg file below.

view mpeg instructional video (2.6Mb)

The deflators are supplied at a preset pressure, however you can adjust this pressure to your desired level. It is not necessary to reset them again unless you wish to change the psi that you want to reduce your tyre pressure to.

Exactly how much you reduce your tyre pressure depends on a variety of factors, such as how much weight your tyres are supporting. Additionally the softness of the surface that you are travelling through will also affect how much you need to let your tyres down. Through trial and error you can find your personal preference and determine what tyre pressure suits you.

Staun Tyre Deflators do not have a minimum start off pressure so you do not need to bring your tyre pressure back up in order to reduce it further. Simply turn the adjusting cap anti-clockwise to further reduce your tyre pressure. If they do not start automatically you can manually start them by lifting the pin. Please check your product header card for individual pressure settings.

The Staun Tyre Deflators need to be screwed on from the finger grip located at the base of the valve. Do not use the adjusting cap or lock ring to fix the deflator to the valve stem. For a comprehensive demonstration on how to install the deflators onto your tyres please view the video above.


Disclaimer - Subject to any applicable statutory rights, the manufacturer (including any authorized agent selling the product) expressly limits any liability with respect to the product to the person who purchased the product from the manufacturer or authorized agent and such liability is expressly limited to the cost of replacing the product.

This product is designed to be used to deflate tyres through quick release of gas pressure and no eyes, ears or other body parts should be placed near these escaping gases. Further, the product should only be used in close proximity to a device that will inflate tyres to manufacturer's specifications. The manufacturer and its agents shall not be liable or responsible in any event for the device completely deflating any tyre below the tyre manufacturer's specifications.
copyright © Staun Products