Inert Gas Supply Manifold

Product Specifications

Technical details and manufacturing context for Inert Gas Supply Manifold

Definition

The Inert Gas Supply Manifold is a critical component of an Inert Gas Purge System, serving as the central distribution hub. It receives pressurized inert gas (typically nitrogen, argon, or carbon dioxide) from a primary supply line or generator and divides the flow into multiple, individually controlled outlet streams. Its primary role is to ensure the safe, controlled, and simultaneous delivery of inert gas to various vessels, pipelines, or process zones that require oxygen exclusion to prevent combustion, oxidation, or contamination.

Constructed from materials such as stainless steel (e.g., 316L), carbon steel, or brass, the manifold is designed for durability and compatibility with inert gases. It features an inlet connection sized from 1/2 to 1 inch NPT (ASME B1.20.1) and outlet connections ranging from 1/4 to 1/2 inch NPT, with other thread types available upon request. The number of outlets can be customized from 4 to 12, depending on the application's requirements. Operating pressure ranges from 1.0 to 1.6 MPa, with a pressure rating of PN16 (ISO 7268). Flow capacity is 50–200 SCFM at 1.0 MPa inlet pressure. The manifold operates within a temperature range of -40 to 85°C, with seals rated for this range. Body material is typically SS316 (ASTM A276), and seal material is PTFE (ASTM D4894) for chemical compatibility. The manifold is helium leak tested to ≤1×10⁻⁶ mbar·L/s (ISO 15848-1). Weight ranges from 5 to 15 kg, and typical dimensions for an 8-outlet configuration are 300×200×150 mm.

All listed values are reference ranges and must be verified for the specific model and application with the legal manufacturer or supplier. Standards mentioned serve as procurement references and do not imply certification or compliance of any specific product.

Working Principle

The manifold operates on fluid distribution principles. Inert gas under pressure enters a common inlet chamber. Internal passages, valves, and fittings then split this single flow into several independent outlet lines. Needle valves, ball valves, or regulators at each outlet port allow for precise flow control and isolation to individual purge points. Pressure gauges are often integrated to monitor inlet and outlet conditions, ensuring the purge gas is delivered at the correct pressure to displace oxygen effectively.

Common Materials

Stainless Steel (e.g., 316L), Carbon Steel, Brass

Technical Parameters

Parameter	Typical range	Notes & selection driver
Number of Outlets	4–12	Customizable per application
Outlet Connection Size	1/4–1/2 NPT	Other thread types availableASME B1.20.1
Inlet Connection Size	1/2–1 NPT	Flanged or welded optionsASME B1.20.1
Flow Capacity	50–200 SCFM	At 1.0 MPa inlet pressure
Operating Temperature	-40–85 °C	Seals rated for this range
Body Material	SS316	Corrosion resistant for inert gasesASTM A276
Seal Material	PTFE	Chemical compatibilityASTM D4894
Leak Rate	≤1×10⁻⁶ mbar·L/s	Helium leak testedISO 15848-1
Weight	5–15 kg	Depends on number of outlets
Dimensions (L×W×H)	300×200×150 mm	Typical for 8 outlets
Pressure Rating	PN16	Maximum allowable pressureISO 7268

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Manifold Block/Body
The primary structure containing the internal flow passages that distribute gas from the common inlet to the individual outlets.

Material: Stainless Steel
Isolation/Control Valve (per outlet)
Allows for individual shut-off and flow control for each outlet line. Often a needle valve for precise adjustment.

Material: Stainless Steel or Brass
Pressure Gauge Port Part
A threaded port for installing a pressure gauge to monitor the gas pressure within the manifold.

Material: Stainless Steel
Inlet Connection Part
The fitting (e.g., female NPT thread) that connects the manifold to the main inert gas supply line.

Material: Stainless Steel
Outlet Port Fittings
Connect each outlet line to its purge point.
Pressure Gauge Optional
Reads the manifold pressure at the port provided for it.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Inert Gas Purge System

View system integration details

Manufacturers of Inert Gas Supply Manifold

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Frequently Asked Questions

What is the primary function of an inert gas supply manifold?

It receives inert gas from a central source and distributes it to multiple purge points, ensuring controlled and simultaneous delivery to prevent oxygen ingress.

What materials are commonly used for the manifold body?

Common materials include stainless steel (e.g., 316L), carbon steel, and brass, chosen for corrosion resistance and compatibility with inert gases.

How is flow control achieved at each outlet?

Each outlet is equipped with needle valves, ball valves, or regulators, allowing precise adjustment and isolation of individual purge points.

What standards are referenced for pressure and leak testing?

Operating pressure references, pressure rating references ISO 7268, and leak testing references ISO 15848-1. These are procurement references; verify compliance with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	0 to 150 psig (10.3 bar)
flow rate:	Up to 500 SCFM (14.2 m³/min)
temperature:	-40°C to +85°C
slurry concentration:	Not applicable (gas only)

Product Specifications

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