Air pockets in draw hose on 12v

Machine Repairs
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first off…I’ve searched and found no relevant insight…so here’s my rigged up project I finished last night. My test run I was just drawing water from a 5gal bucket on both water & SH mix valves fully open and soap valve closed. Once lines are full of water I get a great stream for 15-20 seconds then I begin to see pump feed hose after mixing valve take in some air pockets. Also some air pockets in the draw up hose connected to the drop stick. I’ve checked all fittings and are tight. Teflon on all threads. Hose clamps can’t go any tighter w/out breaking plastic fitting. Would a foot valve be necessary at end of draw stick? Already have em after mix valves just think this may eliminate the water from returning back to bucket when I’m on the trigger, yet I’ve seen videos and posts here and nobody uses check/foot valves at end of draw tube…might be mistaken.

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Are the check and control valves tight/sealed on the proportioner?

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Dont use Teflon on pvc or plastic. Go make sure you didn’t crack anything when tightening up everything.

Use this instead

https://www.homedepot.com/p/RectorSeal-T-Plus-2-in-4-oz-Teflon-Pipe-Thread-Sealant-23631/100201204

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Ya know it’s like they can always go a little tighter maybe due to the slip of the Teflon? I know not to over tighten but I’m sure they are as tight as possible b4 cracking

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That’s your issue…take everything apart and upset rid of the Teflon

1 Like
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*get rid

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Thing is that when it’s primed and the lines are filled w water pump shuts off and system is ‘pressurized’ I didnt see but 2 leaks: gun (in pic u can see a ft long hose for gun just for testing); & Pump outlet. Nothing on proportioner/mix valves. Or before pump.

Dumb question: accumulator goes downstream of pump correct? Cause that’s how I have it plumbed as per pics on pressuretek. And I doubt that has any affect on air pockets. Will use the pipe dope. Hope that’s it

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Yes accumulator is after pump. Hmm maybe Teflon’s not your issue, but I’ve had leaks that I couldn’t find and after changing a fitting or tightening something up boom it’s fixed. 12v can be finicky.

Are your lines all the same length that run to the SH and h2o?

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W & SH lines are equal length. Do u guys run foot/check valves at bottom of draw tube? We use em in car wash to keep soaps in draw hose for proper dilution.

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We’ve used only slotted pvc to filter at the suction ends of water and sh.

Check with @FrankPeters if you dont have a Lowes nearby.

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YOU GUYS ROCK!! I’m super stoked about my new 12v!!! The pipe dope did the trick. Must’ve had some air draw somewhere. The proportioner looks like crap w all the residue on it now but it works. Muchos Gracias!!

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Glad it worked out!