Airgas - MIL31-50-320 - Miller® Carbon Dioxide (CO2) Single Stage Flowgauge Regulator

Miller® Carbon Dioxide (CO2) Single Stage Flowgauge Regulator

Airgas Part #:MIL31-50-320

Manufacturer Part #:31-50-320

$NA.NA /NA

Sure-Seat™ High-Pressure Filtration System: Encases the high-pressure seat with a sintered copper-nickel matrix filter to trap particles and prevent seat ignition.
Dual Filter Design: Protects high-pressure seat from debris, rust, and scale to reduce repair costs.
Decay-Rise Compensation: Compensates for delivery pressure rise as source cylinder pressure diminishes.
Auto-Reset Safety Relief Valve: Integrated external mechanism vents gas during over-pressure spikes and automatically resets.
Machined Relief Valve Threads: Supports tube fittings for routing hazardous gas away from the operator.
Shatter-Resistant Gauges: 2-inch gauges with polycarbonate lenses to resist industrial impact.
Corrosion Protection: Nickel-plated bonnet and forged brass body resist gas porosity leakage and environmental degradation.
Color-Coded Labels: Provides gas service identification and technical performance data.

Manufacturer: Miller Electric Manufacturing / ITW (Illinois Tool Works)
Brand / Line: Miller Smith Equipment (Series 30 / Series 31)
Part Number (MPN): 31-50-320
Gas Service Compatibility: 100% Carbon Dioxide (CO2)
Regulator Type: Single-Stage, Pressure-Compensated Flow Gauge Regulator
Capacity Duty Rating: Medium-Duty / Industrial Grade
Inlet Connection Standard: CGA-320 (0.825"-14 NGO, Female Fitting, Right-Hand Thread)
Outlet Connection Thread: 5/8"-18 UNF Internal Right-Hand (Standard B-Size Welding Hose Fitting)
Maximum Inlet Pressure: 3,000 PSIG (206.8 bar)
Maximum Delivery Pressure (Preset): 50 PSIG (3.45 bar)
Flow Measurement Range: 10 to 50 SCFH (Standard Cubic Feet per Hour) / 24 L/min
Measurement Accuracy: ± 2% of full-scale actual gauge reading
Regulator Body Material: Solid Forged Machined Brass
Regulator Bonnet Material: Nickel-Plated Die-Cast
Diaphragm Material: Nylon-reinforced Laminated Neoprene composite elastomer
Filter Matrix Material: Sintered Copper-Nickel Alloy
Gauge Lens Material: Heavy-wall Clear Polycarbonate
Gauge Casing Material: 2-inch (51mm) Stamped Steel
Overall Physical Length: 3-1/3 inches (84.7 mm)
Net Weight: 2.86 lbs (1.30 kg)
Warranty: 3 Years (Miller's Gas Equipment and Gas Control Warranty)
Standards Compliance: UL Listed, CGA V-1, ISO Quality Compliance

Gas Metal Arc Welding (GMAW/MIG) shielding gas delivery
Gas Tungsten Arc Welding (GTAW/TIG) shielding gas delivery
Short-circuit, globular, and spray-arc welding processes
Structural steel workshop fabrication
Automotive manufacturing assembly plants
Industrial repair and maintenance facilities
Tank-cart configurations where vertical flowmeters are susceptible to mechanical damage

Regulator Type

» Single Stage Regulator
» Flowgauge Regulator

Gas Service

» Carbon Dioxide (CO2)

Delivery Rate

» 0 - 50 psig

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