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Harris KH1057 two-stage gas regulator for hydrogen methane with cylinder mount and control knob

Harris

Harris KH1057 Hydrogen Methane Two Stage Welding Regulator

SKU CH-ASSX-WJ6ND

Two-stage regulator delivers hydrogen or methane at up to 125 psig from cylinders rated to 350 psig

  • Product typeTraffic & Parking Lot
  • Two-stage design delivers stable outlet pressure for hydrogen and methane
  • 350 psig maximum inlet handles high-pressure cylinders safely
  • 125 psig outlet maximum suits precision welding and lab work
  • Left-hand NGO inlet threads match standard hydrogen and methane tanks
  • Quarter-inch tube-fitting outlet connects directly to common hose assemblies

Hydrogen Methane Two Stage Regulator

The Harris KH1057 is a high purity gas regulator built for hydrogen and methane supply. It mounts directly to a cylinder and uses a two stage design to deliver steady outlet pressure. The control knob allows precise adjustment for welding and specialty gas applications. This unit suits technicians who need consistent flow from high pressure sources.

Capacity and headroom at 350 psig inlet

Maximum inlet pressure is rated at 350 psig with an outlet pressure ceiling of 125 psig. The two stage construction maintains stable delivery as cylinder pressure drops, giving operators reliable control across the working range. It runs out of headroom when inlet pressure exceeds the rated limit or when downstream demand pushes flow beyond the regulator capacity.

Upgrading from single stage regulators

This model replaces single stage units where outlet pressure drift affects weld quality or process repeatability. The jump is worth it when work requires constant pressure across a depleting cylinder, such as extended hydrogen or methane runs. It is not for installations needing higher outlet pressures than 125 psig or different gas compatibilities.

How it compares

Measured against everything we stock in Welding Equipment & Positioners, at today’s prices. Recalculated every night.

Price $557.99
Pricier than about 90% of the 1,978 comparable items (median $50.99).

Specifications

Product
Brand nameHARRIS
Product typeTraffic & Parking Lot

Questions about this item

Will the 350 psig inlet and left-hand NGO thread fit the hydrogen cylinder I already use?

Yes, the regulator accepts a maximum inlet pressure of 350 psig through a 0.825 in.-14 left-hand male NGO connection, which matches standard high-purity hydrogen and methane cylinders.

How can I verify the two-stage regulation is holding the outlet pressure steady at 125 psig?

After opening the cylinder valve, watch the outlet gauge; the two-stage design should keep the reading stable at or below 125 psig even as the inlet pressure drops.

Does the box include the 1/4 in. tube fitting for the outlet or must I buy it separately?

The regulator comes with a female 1/4 in. tube-fitting outlet already installed, so no separate fitting is required for standard connections.

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