Smith® Series 40 Acetylene Regulator for Heavy-Duty Use, CGA 300 #40-15-300S

The Miller Smith® Series 40 Acetylene Heavy-Duty Regulator offers precise pressure management with a maximum delivery pressure of 15 psig and an inlet pressure of 400 psig, making it ideal for high gas flow applications, including liquid service and oxy-fuel welding/cutting. This regulator comes equipped with an HB190 Hard Hat gauge guard for added protection. With features like a stainless steel diaphragm and a resin bonnet insert, it provides durability and smooth adjustments even under high-pressure conditions. Backed by Miller 3-year warranty.

What's Included

• Smith® Series 40 Acetylene Regulator
• HB190 Hard Hat gauge guard
• CGA 300 connection

Highlights

• Max Pressure: Delivers up to 15 psig with a 400 psig inlet rating.
• Enhanced Protection: HB190 Hard Hat gauge guard increases durability.
• Corrosion Resistant: Stainless steel diaphragm prevents freeze-up.
• Smooth Adjustments: Resin bonnet insert ensures easy pressure control.
• Safety Valve: External relief valve guards against pressure surges.
• Rugged Build: Nickel-plated bonnet and forged brass body resist corrosion.
• Clear Gauges: 2.5-inch shatter-resistant polycarbonate lenses for visibility.
• Debris Protection: Dual filters, including Sure Seat™, extend seat life.

Industries

• Metal fabrication
• Heavy-duty welding
• Manufacturing
• Automotive repair
• Maintenance and repair

Benefits of the Smith® Series 40 Acetylene Regulator

• Specifically designed for high gas flow applications, including liquid service
• Stainless steel diaphragm ensures a long service life even with liquid gases
• Color-coded labels simplify gas identification and provide technical information
• External relief valve automatically releases excessive pressure and resets
• Durable construction with nickel-plated bonnet and forged brass body
• Shatter-resistant 2.5-inch gauges allow for easy pressure monitoring
• Sure Seat™ dual filter system ensures reliable operation by preventing debris buildup

Fast, Free Shipping & Easy Returns

Your in-stock items ship same or next day from our five distribution hubs in WI and IL via UPS Ground on orders $300+. Need special shipping? Just call 1-844-682-0205 for accommodations, including our use of your shipping accounts. Enjoy hassle-free 14-day returns on new, sealed products with a pre-approval. Count on exceptional service backed by industry-leading shipping and return policies. Experience the advantage on your next order!

Check out our selection of welding equipment and accessories from Miller and other brands.