Harris
Harris KH1131 Specialty Gas Regulator Cylinder Ar He N CGA-580 Welding
Single-stage brass regulator for argon, helium and nitrogen cylinders with CGA-580 inlet, 0–125 psi delivery range and 316L stainless-steel diaphragm
- MaterialHAWA
- TypeGas Regulators
- Single-stage design simplifies gas delivery for argon, helium and nitrogen
- Brass body with 316L stainless-steel diaphragm handles up to 3,000 psi inlet pressure
- CGA-580 inlet connects directly to standard cylinders
- 0–125 psi delivery range covers common welding and lab applications
- Includes diaphragm valve and 1/4 in Swagelok fitting for immediate hookup
Single-Stage Argon Helium Nitrogen Regulator
The Harris KH1131 is a single-stage brass regulator built for cylinder supply of argon, helium or nitrogen. It connects to a CGA-580 inlet and delivers pressure from 0 to 125 psi through a 1/4 in FNPT diaphragm valve with a 1/4 in tube fitting. The 2.0 in gauges show delivery and a 4,000 psi supply pressure reading. A 316L stainless steel diaphragm resists corrosion in high-purity gas service.
Upgrade From Two-Stage Or Non-CGA Models
This unit replaces older two-stage regulators when a compact single-stage design is preferred for steady cylinder pressure. It also upgrades setups that lack a CGA-580 inlet or a built-in diaphragm valve with Swagelok fitting. The jump is worth it when the application demands CGA E-4 compliance and a brass body rated for 3,000 psi maximum inlet pressure in a 2.0 in body diameter.
Stable Delivery Under Continuous Flow
Under sustained load the single-stage mechanism maintains consistent outlet pressure as cylinder pressure declines, while the 316L diaphragm resists creep and contamination. The 2 in supply gauge provides clear visibility of remaining cylinder pressure during long welds or purge cycles. Brass construction and the integrated diaphragm valve ensure reliable shut-off and flow control without external leakage over extended operating periods.
Highlights
- Single-stage design simplifies gas delivery for argon, helium and nitrogen
- Brass body with 316L stainless-steel diaphragm handles up to 3,000 psi inlet pressure
- CGA-580 inlet connects directly to standard cylinders
- 0–125 psi delivery range covers common welding and lab applications
- Includes diaphragm valve and 1/4 in Swagelok fitting for immediate hookup
Specifications
| Brand | HARRIS |
|---|---|
| Material | HAWA |
| Type | Gas Regulators |
Questions about this item
What inlet connection does the KH1131 regulator use for the gas cylinder?
The regulator connects to the cylinder through a CGA-580 inlet, which is the standard fitting for argon, helium and nitrogen cylinders in this service range.
What is the correct sequence for pressurising the regulator after the CGA-580 nut is tightened?
Turn the delivery pressure adjusting knob fully counter-clockwise before slowly opening the cylinder valve; the step most often missed is backing the knob out first, otherwise the diaphragm can be damaged by the sudden 3,000 psi inlet pressure.
When should the 316L stainless-steel diaphragm and the 2 in gauges be inspected or replaced?
Inspect the diaphragm and both 2 in gauges annually or after any over-pressure event; replace them if the delivery gauge drifts from the 0 to 125 psi range or if the supply gauge no longer reads up to 4,000 psi accurately.
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