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Whats the difference between high pressure and low pressure systems?

difference low pressure SYSTEMS
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Whats the difference between high pressure and low pressure systems?

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A low pressure system runs about 1 psi, a high pressure system about 15 psi. A low pressure system is hard to regulate. The regulator will regulate well from about 10-25 psi. A low pressure system needs a way to drop the 10 psi to 1 psi. Ususally a needle valve is used, but this is not very reliable, since a needle valve is not designed to regulate pressure, but flow. If you set the regulator very low, the pressure will wander up and down. If you set the needle valve almost closed (as you must to make a big pressure drop) the flow rate will vary a lot. The right way to do low pressure is to daisy-chain a carbon dioxide regulator and a natural gas regulator. But that is expensive and untried “experimental” territory. If you must have a low pressure system it is the way to go. We can help with it. Bring your wallet or charge card, though.

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