MADE IN USA. The EVKeg is a safe, durable polyethylene beer keg (150 PSI capability) that has the unique features of using an ozone sanitized liner that is replaced with every fill eliminating the need for keg cleaning, and a self setting pressure relief valve that prevents the keg from accidental over pressurization.
Orifices are generally used as measuring and hydraulic control devices. Orifice. hydraulics control the function of many submerged inlet - free outlet culverts, primary spillways in detention facilities, manholes in conduit flow, and in storm drain.
(Orifice hole size will be larger for natural gas supply models than propane because of the lower natural gas operating pressure). The actual BTU output is determined by the pressure of the gas supplied, volume of gas which is regulated by the valve and by the orifice fitting orifice hole size.As an example, assuming a fixed natural gas pressure of 3.5 inches of water column a #48 orifice will give a different BTU output than a #46.lthough the natural gas pressure supplied to your home is regulated by your local gas company, some grills designed for natural gas also incorporate an additional regulator at the grill to assure the maximum gas pressure supplied to the grill.