Miller-Smith Equipment
Miller-Smith Equipment 213-4102 High Purity Gas Regulator, Single Stage, CGA-320
Single-stage high-purity regulator with CGA-320 inlet, 0 to 150 psi delivery range and stainless-steel diaphragm for laboratory gas service
- TypeWelding Supplies
- Single-stage design simplifies setup for lab use
- CGA-320 inlet fits standard CO₂ cylinders directly
- 0 to 150 psi delivery range covers precise flow needs
- Stainless steel diaphragm maintains gas purity throughout operation
- 0 in brass body with Sure Seat filtered seat resists contamination
Precise CO2 Delivery for Lab Work
The Miller-Smith Equipment 213-4102 is a single-stage high-purity regulator built for carbon dioxide cylinders with a CGA-320 inlet. It reduces supply pressure up to 3,500 psi down to a 0 to 150 psi delivery range. A 2 1/2 inch gauge displays supply pressure up to 4,000 psi. The brass body and stainless steel diaphragm suit laboratory applications requiring clean gas handling.
Stable Output Within Rated Limits
As a single-stage design, delivery pressure will rise gradually as the cylinder empties, so the regulator performs best when the process tolerates moderate drift or when the operator can adjust the knob periodically. The Sure Seat filtered seat helps maintain seat integrity under continuous flow, while the 2.0 inch body diameter houses the diaphragm and seat assembly for consistent regulation across the 0 to 150 psi working range.
Direct Cylinder Mount With Brass Fitting
Installation is straightforward: thread the CGA-320 nut onto the CO2 cylinder valve and connect downstream equipment to the 1/8 inch brass tube outlet. The plated brass body resists corrosion, but the soft metal threads require careful alignment to avoid cross-threading. Overtightening the inlet connection can damage the cylinder valve seat, and the single-stage mechanism means pressure creep will occur if the cylinder is left open with no downstream demand.
Highlights
- Single-stage design simplifies setup for lab use
- CGA-320 inlet fits standard CO₂ cylinders directly
- 0 to 150 psi delivery range covers precise flow needs
- Stainless steel diaphragm maintains gas purity throughout operation
- 0 in brass body with Sure Seat filtered seat resists contamination
Specifications
| Brand | MILLER ELECTRIC |
|---|---|
| Type | Welding Supplies |
Questions about this item
How much noise or heat does the 213-4102 regulator generate during continuous all-day use?
The 213-4102 is a passive mechanical regulator with no moving electrical parts, so it produces no operational noise and negligible heat while controlling gas flow from the cylinder.
What existing fitting must my cylinder already have to connect this CGA-320 inlet?
Your gas cylinder must already carry a CGA-320 valve outlet; the regulator’s inlet nut threads directly onto that standard connection without an adapter.
Will the 1/8 in brass tube outlet on this regulator mate with the hose barbs on my older welding torch?
The outlet is a 1/8 in brass tube fitting, so you will need a compatible 1/8 in tube-to-hose adapter or a torch already equipped with a matching 1/8 in compression connection.
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