Question 1

What is the max psi on the input side

Accepted Answer

The instructions just say max. pressure 145  lbs. with no mention of input or out put.  I assumed input but after reading the add I see it is out put. So I don't think I can help you.  I would try to check directly with the mfg.

Question 2

Is it supposed to hiss (leak air) when it is set to a pressure lower than the tank?

Accepted Answer

As you adjust the pressure downward, the regulator will let a little wisp of air out as you turn the knob.  However, it should not leak air at any other time.  If yours is leaking continuously, something is wrong with it.I should add that William R and I both assume the hissing is "leakage out" from the regulator, such as around the knob.  The regulator will 'leak through' to maintain the set pressure downstream.  If your downstream system has a leak, the regulator will allow air through to make up for the leakage.  This would be normal operation.

Question 3

When looking down at the top of the knob, what side is the gauge on? And, does it have an L or R stamped on it?

Accepted Answer

It should have arrows or in/out to indicate the direction of flow for your connections so base your fittings based on that. with the supplied bracket and the right fittings (1/8" npt nipple and 1/8" npt female/female elbow), you can have the gauge face out, up, down, left or right.

Question 4

Would the regulator fit on a 24 oz CO2 bottle with a pin valve

Accepted Answer

That I do not know, But these type of gauges and regulators are meant to be used with compressed air usually no more than 250 psi. And to the best of my knowledge, compressed gases such as C02 is normally around 3000 psi. To get a definite answer, I would consult with the manufacturer of the product.

ASIN	B00IDCYKEY
Best Sellers Rank	#74,611 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #180 in Air Compressor Accessories
Brand	Primefit
Brand Name	Primefit
Customer Reviews	4.4 out of 5 stars 814 Reviews
Global Trade Identification Number	00816227016164
Included Components	Air Regulator
Item Dimensions	8.9 x 3.8 x 8.9 centimeters
Item Type Name	Mini Air Regulator
Item Weight	0.4 Pounds
Item dimensions L x W x H	8.9 x 3.8 x 8.9 centimeters
Item weight	0.4 Pounds
Manufacturer	Primefit
Material	Alloy Steel
Material Type	Alloy Steel
Thread type	1/4" Npt
UPC	816227016164 787721681359
Unit Count	1 Count

Primefit R1401G Mini Air Regulator with steel-Protected Gauge, 60-Scfm At 100-Psi, 1/4" Npt

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