How to Adjust a 2-Stage Regulator With Propane

Many households use propane as a main fuel source for powering appliances, from stove cooktops to laundry dryers. However, powering various appliances throughout a home requires a large propane tank, typically installed outside on a concrete block. Large propane tanks require pressure regulator valves for controlling the gas pressure between the tank and household appliances. In fact, many propane systems use two regulators for stepping the pressure down slowly. Two-stage, or second stage, regulators can be adjusted for proper propane flow supplied by the first stage regulator.

Pressure Gauge

Instructions

- 1
  Remove the protective cover, or closing cap, from the two-stage regulator's top assembly.
- 2
  Turn the adjustment screw manually in a clockwise direction to increase the propane's gas pressure. The clockwise motion tightens the regulator's internal spring assembly, causing more gas pressure to move forward through the regulator.
- 3
  Attach a pressure gauge to the regulator's gas outlet. Measure the output pressure. A typical propane gas measurement should reflect about 11 inches of water column on the gauge. Confirm the proper pressure setting with the individual propane system's manual.
- 4
  Turn the adjustment screw counterclockwise if the pressure is too high. Measure the outlet gas pressure again with the pressure gauge. Adjust the screw until the proper pressure is achieved across the two-stage regulator.
- 5
  Reattach the protective cover. Do not allow the adjustment screw to remain uncovered after calibrating the regulator. The weather elements can easily damage the screw, and connected components, causing the regulator to fail or leak.

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