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Old 06-02-2014, 07:10 AM   #1 (permalink)
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Default Parker H3L

Just wondering what Parker H3L owners have their needle valve set to? I never properly learnt how to dial this thing in because I've always been afraid of going too low and blowing the needle valve. Any input would be greatly appreciated.
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Old 06-02-2014, 07:58 AM   #2 (permalink)
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Default Re: Parker H3L

I think I used to use it about 3 turns out.

The h3 can be shut off. Just don't go crazy stopping the flow.
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Old 06-02-2014, 11:21 AM   #3 (permalink)
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Default Re: Parker H3L

Use your finger tips to tighten it. Once it feels snug then stop. Mine is 4 turns open, but I'm running a sump on a fairly large tank. Try 2-3 turns.

Turns also depends on operating pressure. I'm running 15 psi.
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Old 06-02-2014, 11:54 AM   #4 (permalink)
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Default Re: Parker H3L

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Originally Posted by AaronT View Post
Use your finger tips to tighten it. Once it feels snug then stop. Mine is 4 turns open, but I'm running a sump on a fairly large tank. Try 2-3 turns.

Turns also depends on operating pressure. I'm running 15 psi.
4.0 is what I currently have mine set at now with an operating pressure of 10 psi. It's a 37 gallon tank but the very high light, would you say maybe my BPS is too high then since you have almost the same thing but on a much larger setup?
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Old 06-02-2014, 02:01 PM   #5 (permalink)
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Default Re: Parker H3L

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Originally Posted by TorontoPlantMan View Post
4.0 is what I currently have mine set at now with an operating pressure of 10 psi. It's a 37 gallon tank but the very high light, would you say maybe my BPS is too high then since you have almost the same thing but on a much larger setup?
10 psi is a lot less pressure and I'm running it on a 48 gallon tank.

It's only too high if the fish and other fauna are stressed.
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Old 06-11-2014, 06:34 PM   #6 (permalink)
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Default Re: Parker H3L

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I think I used to use it about 3 turns out.

The h3 can be shut off. Just don't go crazy stopping the flow.

Mine seems could not fully close. When I turn to shut off, it just keep on turning not stopping.
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Old 06-11-2014, 06:44 PM   #7 (permalink)
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Mine seems could not fully close. When I turn to shut off, it just keep on turning not stopping.
Is the knob loose? There are tiny little set screws that hold it on that could come loose over time.
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Old 06-11-2014, 06:56 PM   #8 (permalink)
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Default Re: Parker H3L

That batch that we all got them from wasn't assembled correctly. Most of the ones I used needed to be re alined to have zero be zero. That's what the little tool kit is for.
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