Two PSIG Delivery Pressure Twin-Stage Regulators LV404Y9 & Compact LV404Y39


SPECIAL 2 PSIG DELIVERY pressure twin stage regulator is designed to reduce container pressure down to 2 PSIG. A line pressure regulator is required downstream to reduce the 2 PSIG to a nominal 11” W.C.


  • Incorporates integral relief valve in the 2 PSIG stage portion of the regulator.
  • Designed to pass not more than 5 PSIG with the seat disc removed.
  • Large vent helps prevent blockage and has a ¾” F.NPT for vent piping.
  • Compact size for easy installation.
  • Built in pressure taps for both the 10 PSIG regulator and 2 PSIG regulator, Plugs can be removed with a 3/16” hex Allen wrench.
  • Select Blue Finish to designate 2 PSIG delivery pressure for 2-pound systems.


Body (First Stage) Brass
Body (2 PSIG Stage) Die Cast Zinc
Bonnet, Second Stage Die Cast Zinc
Diaphragms Integrated Fabric and Synthetic Rubber
Springs Steel and Stainless Steel
Valve Discs Resilient Rubber