I Only Have One Question

<iframe width="420" height="315" src="//www.youtube.com/embed/pVIATZk4cGE" frameborder="0" allowfullscreen></iframe><br /><br />Where is the safety relief valve?<br /><br />That brass fitting to the left side sure looks like it has a pipe plug in it to me.

I Only Have One Question

Where is the safety relief valve? That brass fitting to the left side sure looks like it has a pipe plug in it to me.

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