NOS now offers Super Hi-Flo bottle valve assemblies with siphon tube and nitrous pressure gauge already installed. This gives you a great way to upgrade to the highest flowing valve and tube NOS has to offer. Key bottle valve features include a 1/8NPT gauge port, 1/4NPT accessory port, large internal and outlet ports, along with an O-ring seal. Our 3/8 id screw-on siphon tube is made from 6061 aluminum can be used as an upgrade for an older style compression fitting tube. Lastly, included with our assemblies is either blue or black face 1-1/2 nitrous gauge with easy-to-see color graduations and a white pointer. These gauges have a stainless steel case with brass internals.

  • Super Hi-Flow assembly features siphon tube and nitrous pressure gauge already installed
  • Great way to update a bottle to the best flowing valve NOS offers
  • Valve has large internal ports for superior flow and an O-ring bottle seal
  • Siphon tube is made from 6061 aluminum and 3/8” I.D. for maximum flow
  • 1-1/2” diameter nitrous pressure gauge features stainless steel and brass construction providing accurate pressure measurement
  • Assembly is designed to Support 500+ Horsepower