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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

  • Main materialHAWA
  • Product 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.

How it compares

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

Price $218.99
Pricier than about 81% of the 1,978 comparable items (median $50.99).

Specifications

Product
Brand nameHARRIS
Product typeWelding Supplies
Size & build
Main materialHAWA

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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