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Brass single-stage welding regulator with CGA-350 inlet and dual gauges

Harris Products Group

Harris Products Group GP401 Welding Regulator CGA-350 0-125 psi

SKU CH-FTDV-N3HT7 MPN GP401

Single-stage brass regulator for hydrogen and methane cylinders with CGA-350 inlet, 0–125 psi delivery range and 4,000 psi supply gauge

  • MaterialHAWA
  • TypeWelding Supplies
  • Precise gas control with 0-125 psi delivery range
  • Safe hydrogen and methane handling via CGA-350 inlet
  • Reliable single-stage regulation up to 3,000 psi inlet
  • Durable brass body with neoprene diaphragm for longevity
  • Compact 2.125 in diameter fits laboratory setups

Single-Stage Brass Regulator for Hydrogen

This single-stage regulator controls cylinder gas down to a working range of 0 to 125 psi. It is built with a brass body and neoprene diaphragm for laboratory gas service. The CGA-350 inlet connects directly to hydrogen or methane cylinders. A 2 in supply gauge reads up to 4 000 psi.

For Lab Technicians Handling Flammable Gases

Suits users who need a ready-to-install regulator for hydrogen or methane supply at moderate pressure. Not for operators who require two-stage pressure stability or a different inlet standard for other gas types. Buyers needing higher delivery pressure or alternative outlet threads should look elsewhere.

CGA-350 Inlet with 1/4 in MNPT Outlet

The CGA-350 inlet matches hydrogen and methane cylinders rated to 3 000 psi maximum. The 1/4 in MNPT outlet fits common laboratory tubing and fittings. This connection pair determines whether the regulator fits the gas supply and the downstream equipment.

Highlights

  • Precise gas control with 0-125 psi delivery range
  • Safe hydrogen and methane handling via CGA-350 inlet
  • Reliable single-stage regulation up to 3,000 psi inlet
  • Durable brass body with neoprene diaphragm for longevity
  • Compact 2.125 in diameter fits laboratory setups

Specifications

BrandHARRIS
MaterialHAWA
TypeWelding Supplies

Questions about this item

What cylinder fitting does the GP401 regulator connect to?

The regulator uses a CGA-350 inlet connection that threads directly onto hydrogen or methane cylinders rated up to 3,000 psi.

Which step is often missed when installing this single-stage regulator?

After threading the CGA-350 nut onto the cylinder valve, the outlet 1/4 in MNPT must be sealed with compatible thread tape before attaching the hose.

When should the neoprene diaphragm be inspected or replaced?

Inspect the diaphragm if delivery pressure drifts outside the 0 to 125 psi range or if the 2 in gauges show erratic readings during laboratory use.

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