Air Drain Valves

[MatthewWBailey]

After reading a thread on here about regularly draining the air tanks, I went and open them up. No water in there as expected since it's bone dry here. BUT, after cycling them, they now leak like hell. All three are leaking air thru the handle posts. If I press the handle down it stops. The parts spreadsheet says they're Napa 12110. Anyone tried this replacement?

 

[AKPacker]

I bought one of these to replace a leaking valve, nice solid brass valve for half the cost of the NAPA one: https://www.amazon.com/gp/aw/d/B076...n_title#aw-udpv3-customer-reviews_feature_div

 

[GeneralDisorder]

Factory would be a Parker DRC601-4

 

[MatthewWBailey]

Excellent

 

[tuckerj84]

I bought one of these to replace a leaking valve, nice solid brass valve for half the cost of the NAPA one: https://www.amazon.com/gp/aw/d/B076...n_title#aw-udpv3-customer-reviews_feature_div

Just replaced mine with three of these. Worked great!

 

[BKubu]

I bought one of these to replace a leaking valve, nice solid brass valve for half the cost of the NAPA one: https://www.amazon.com/gp/aw/d/B076...n_title#aw-udpv3-customer-reviews_feature_div

Is it just a plug and play part or does it require any adaptation? I have one to replace, too. Thanks!

 

[AKPacker]

Is it just a plug and play part or does it require any adaptation? I have one to replace, too. Thanks!

Plug and play - unscrew the old valve and screw in the new one.

 

[BKubu]

Plug and play - unscrew the old valve and screw in the new one.

Perfect. Thanks!

 

[MatthewWBailey]

Completed this replacement today but found a new leak at this regulator. Leaking at the flange

 

[GeneralDisorder]

That is the pressure protection valve that limits the CTIS and radiator fan to only receive air when the wet tank is above 95 psi. Probably best to just replace it.

 

[Ronmar]

The regulator looking thing is the air brake protection valve. Works like a CTIS wheel valve. Halts flow when wet tank drops to ~85PSI.

take it apart and clean and inspect and or replace the rubber disc…

 

[MatthewWBailey]

The regulator looking thing is the air brake protection valve. Works like a CTIS wheel valve. Halts flow when wet tank drops to ~85PSI.

take it apart and clean and inspect and or replace the rubber disc…

So there's no seal on the flange? Just the rubber disk?

 

[Ronmar]

So there's no seal on the flange? Just the rubber disk?

Correct. If it is not cracked/deteriorated, i would add a little silly grease arount the perimeter and re-assemble it.

 

[MatthewWBailey]

Correct. If it is not cracked/deteriorated, i would add a little silly grease arount the perimeter and re-assemble it.

Ok nice. Tracking these leaks down is a bread crumb trail. I have a new cab leveling valve for that known leak. But I couldn't hear this one over the drain valves.