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CGA300-1 - Miller CGA 300 Inlet Nut for Commercial Acetylene Regulators

Packaging: 1 per ea
$31.90/ea $19.64/1 per ea only $19.64/eaSave 38%

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SKU: MILCGA300-1 Categories: ,

OVERVIEW

Miller CGA300-1 Inlet Nut: Precision Brass Fitting for Commercial Acetylene

The Miller CGA300-1 is a high-quality brass inlet nut designed specifically for CGA 300 gas connections. This fitting is an essential component for assembling or repairing regulators, manifolds, and pigtails used with Commercial Acetylene cylinders. Manufactured to strict tolerances, this nut ensures a safe and secure connection between your gas supply and pressure regulation equipment. It is identified as a direct equivalent to the Superior Products part N-56, making it a reliable choice for maintenance professionals seeking standard industry replacements.

Constructed from durable brass, the CGA300-1 offers excellent resistance to corrosion and wear, which is critical in industrial environments where equipment is frequently connected and disconnected. The CGA 300 standard utilizes a right-hand thread configuration, distinct from other fuel gas connections like CGA 510, to prevent cross-connection with incompatible gases. This nut is designed to mate with a corresponding CGA 300 nipple (not included) to form a gas-tight seal against the cylinder valve outlet. Proper selection of inlet fittings is paramount for safety in oxy-fuel welding and cutting operations.

In the context of industrial gas distribution, the CGA 300 connection is typically reserved for commercial acetylene cylinders, which differ from the smaller "MC" or "B" style tanks. The Miller CGA300-1 ensures that your heavy-duty regulators can interface correctly with these larger supply cylinders. Whether you are building a custom manifold system or simply replacing a stripped or damaged nut on an existing regulator, this OEM-quality part provides the fit and performance required for professional applications.

Key Technical Specifications:

  • Connection Type: CGA 300
  • Gas Service: Commercial Acetylene, Ethyl Chloride
  • Material: Brass
  • Thread Direction: Right Hand
  • Cross Reference: Superior N-56

Ensure your gas equipment meets safety standards by using genuine or high-quality replacement fittings like the Miller CGA300-1. Regular inspection of all gas fittings for thread damage or deformation is recommended to maintain a leak-free environment.

Additional Information
Packaging Description:1 Per Ea
Gas Type:Acetylene (Commercial), Ethyl Chloride
Connection Type:CGA 300
Material:Brass
Component Type:Inlet Nut
Thread Direction:Right Hand
Cross Reference:Superior N-56
----- new values below ----
Gas Type:Acetylene (Commercial), Ethyl Chloride
Connection Type:CGA 300
Material:Brass
Component Type:Inlet Nut
Thread Direction:Right Hand
Cross Reference:Superior N-56
Brand:Miller OEM
Packaging Description:1 Per Ea

INCLUDED

  • 1 x Miller CGA300-1 Inlet Nut (Brass)

APPLICATIONS

  • Connecting regulators to Commercial Acetylene cylinders
  • Repairing damaged regulator inlet assemblies
  • Building custom gas manifolds
  • Industrial gas distribution systems
  • Replacement for worn or stripped CGA 300 nuts

FAQ

CGA 300 is primarily used for Commercial Acetylene cylinders. It is also used for Ethyl Chloride.

No, this product is the nut only (CGA300-1). The nipple must be purchased separately or reused if in good condition.

Yes, the Miller CGA300-1 is a direct functional equivalent to the Superior Products part N-56.

The CGA 300 connection typically utilizes a .825"-14 NGO right-hand thread.

No. Propane tanks typically use CGA 510 connections, which have left-hand threads. CGA 300 has right-hand threads and will not fit.

Check your cylinder valve. CGA 300 (Commercial Acetylene) has external threads on the valve, requiring a nut with internal threads. CGA 510 (Pol) often has internal threads on the valve, requiring a male nut, though some acetylene variations exist. Always verify the gas service type.

It is made of brass, which is the standard material for non-corrosive gas fittings due to its durability and spark resistance.

Generally, CGA fittings rely on the metal-to-metal seal between the nipple and the valve seat. Teflon tape is not usually recommended on the threads of the nut itself, as the seal happens at the seat, not the threads.

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