From the product description, check product page for current description, price and availability:

The Mark III Regulator by Keg King provides a reading of keg dispensing pressure, as well as an accurate indication of cylinder gas level. By turning the chrome center knob, you can adjust the dispensing pressure from 0 – 60 PSI.  The Mark III features gauges housed in rubber to protect them from dings, as well as a large 2½” diameter diaphram so it can both handle several kegs at once if needed, and the large diaphram also lets you have precise control over the dispensing pressure (which you adjust with the center knob).

Threaded ¼” flare outlet fits our D03 Gas Connector (no need to adapt your ¼” gas tubing to fit the 5/16″ wide hose barb found on other beer regulators).  Includes a safety relief valve, but does not have a check valve built into the bottom inlet. This regulator includes two nylon tank sealing washer, and will accept nylon or fiber tank sealing washers.

The high pressure gauge threads are traditional right hand, as are the threads for the lower flare outlet fitting. You can unscrew these and install any standard 1/4″ male NPT check valve (such as our item Q87).

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