Thread: Schrader Valves for EAS

The ones in the Coilrite kit I got from Truckspring.com were a one-piece schrader/push-in fitting, with external thread for bulkhead mounting.

The only ones I can see on their site are 1/4"
3032, Inflation Valve - 1/4 inch, Adapter Fitting - TruckSpring.com

Steve

Originally Posted by Dougal

What are people using for schrader (car tyre type) valves for manual air suspension operation?

I can get tank valves reasonably easily (1/8" male thread one end, schrader valve other end) and fittings from 1/8" BSPT to 6mm airline. But I'm wondering if there is a nicer way.

That's exactly what I used for my polyair bags and seems to be what people use for manual EAS systems.

EAS Override

I work in the pneumatics industry and have access to fittings tubing etc. We have to buy in the Schrader valve (as per your picture) and screw through a mounting plate into a female quick-fit connector.

One comment would be how leak tight are the quick-fit connectors. We sell fittings to companies that make leak detectors and they won't go near the quick-fit's.....



Colin

Originally Posted by gromit

One comment would be how leak tight are the quick-fit connectors. We sell fittings to companies that make leak detectors and they won't go near the quick-fit's.....

Colin

Yes I've done a bit with pneumatics in automation. The problem seems to be the tubes compress down over time in the fitting. They don't leak much until you disturb them.

I replaced both front air bags a few weeks ago. Both bags look good and air-tight but it still drops over 3 days. I suspect the fittings. I need to cut and shorten the tubes to a fresh end.

Beware if you're going to mix'n'match new Schraeder vlaves and hoses etc.... the RR EAS runs a 6mm system, not 1/4" as you'd expect from an English car...


In my experience (Operating a machine that's awash with air lines/devices/zillions of push-fits..) the quality of hose and brand-name of fittings makes the Big Differance.

My 'self-rescue' system includes a ball-valve in the line between T-piece and Valve Body to totally isolate each bag from a potentially leaky solenoid.

If/when I get around to tidying up the layout, I'd like to use compression fittings simply for reliability and 100% sealing. - Already had one leaking push-fit.

'95 Classic with working EAS