Can anyone recommend a fitting for my nitrous bottle that has two 1/8" NPT female ports? The bottle fitting and main line are #4 AN. I want to plumb in a pressure gauge and an adjustable pressure switch for heater control in the trunk. There are plenty of fittings with single ports like this one: But does anyone make one with two holes? Stacking them seems clumsy, and a Rube Goldberg contraption with tees, pipe nipples, etc. would be even worse. Thoughts?