Inlet Manifold/Header

Product Specifications

Technical details and manufacturing context for Inlet Manifold/Header

Definition

The inlet manifold or header is a critical component in gas distribution systems that serves as the primary collection and distribution point. It receives gas from a single inlet source and evenly distributes it to multiple downstream branches, pipes, or equipment. This ensures balanced flow and pressure distribution throughout the system, preventing uneven supply that could affect operational efficiency or safety. The manifold is typically constructed from stainless steel, carbon steel, or aluminum alloy, with body materials such as WCB, CF8, or CF8M per ASTM A216/A351. End connections may be flanged (RF), butt weld (BW), or socket weld (SW) per ASME B16.5/B16.25. Nominal diameters range from DN50 to DN300 (ISO 6708), with 2 to 8 outlets. Operating pressure is 1.0–1.6 MPa, and test pressure is 1.5–2.4 MPa. Operating temperature ranges from -40°C to 85°C. Flow coefficient (Cv) is 15–60, and leakage rate is ≤0.1% (Class A seat leakage). Weight varies from 15 to 120 kg depending on size and material. Surface treatments include epoxy or PTFE for corrosion protection. These values are reference ranges and must be verified for the specific model and application with the legal manufacturer or supplier. The manifold's internal geometry is designed to minimize turbulence and pressure drops, ensuring consistent pressure and flow across all outlets. Proper selection requires consideration of pipe size, number of outlets, operating conditions, and material compatibility. Verification questions include confirming pressure ratings, temperature limits, and end connection standards. Maintenance signals include leakage, pressure drops, or corrosion. Failure boundaries include exceeding pressure or temperature limits, or improper installation.

Working Principle

Gas enters through a single inlet port into a common chamber or pipe section. The internal geometry of the manifold/header is designed to minimize turbulence and pressure drops while allowing the gas to flow smoothly to multiple outlet ports. The distribution is typically engineered to maintain consistent pressure and flow rates across all outlets, often through equal-length branches or carefully calculated internal diameters.

Common Materials

Stainless Steel, Carbon Steel, Aluminum Alloy

Technical Parameters

Parameter	Typical range	Notes & selection driver
Nominal Diameter	DN50–DN300 mm	Matches pipe size for flow capacity.ISO 6708
Number of Outlets	2–8	Determines distribution branches.
Test Pressure	1.5–2.4 MPa	Hydrostatic test per standard.
Operating Temperature	-40–85 °C	Seal material limits range.
Flow Coefficient (Cv)	15–60 Cv	Indicates flow capacity at given pressure drop.
Leakage Rate	≤0.1 %	Class A seat leakage.
Body Material	WCB/CF8/CF8M	Carbon steel or stainless steel.ASTM A216/A351
End Connections	RF/BW/SW	Flanged, butt weld, or socket weld.ASME B16.5/B16.25
Weight	15–120 kg	Depends on size and material.
Surface Treatment	Epoxy/PTFE	Corrosion protection.

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

Inlet Flange Part
Provides secure connection to the gas supply source

Material: Steel
Main Chamber/Body Part
Houses the gas for distribution to multiple outlets

Material: Stainless Steel
Outlet Ports Part
Individual connections for distributing gas to downstream components

Material: Steel
Mounting Brackets Part
Secures the manifold to the supporting structure

Material: Steel
Pressure Relief Valve Port Optional Part
Optional connection for safety pressure relief devices

Material: Steel

Applied To / Applications

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

Gas Distribution System

View system integration details

Manufacturers of Inlet Manifold/Header

Manufacturer profiles associated with Inlet Manifold/Header.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 6 September 2026

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Frequently Asked Questions

What is the function of an inlet manifold/header?

It collects gas from a single inlet and distributes it evenly to multiple outlets, ensuring balanced flow and pressure in a gas distribution system.

What materials are commonly used?

Stainless steel, carbon steel, and aluminum alloy are typical. Body materials may include WCB, CF8, or CF8M per ASTM A216/A351.

What standards apply to this component?

Relevant standards include ISO 6708 for nominal diameter, and leakage testing, ASME B16.5/B16.25 for end connections, and ASTM A216/A351 for body materials.

How should I verify the suitability of a specific manifold?

Check the manufacturer's datasheet for exact pressure, temperature, flow, and material ratings. Confirm that the end connections and dimensions match your system requirements.

Data Basis

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

Preliminary Technical Classification

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pressure:	Up to 150 psi (10.3 bar)
flow rate:	0-5000 SCFM (standard cubic feet per minute)
temperature:	-40°C to 200°C
slurry concentration:	Not recommended for slurry applications

Product Specifications

Applied To / Applications

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Application Fit & Sizing Matrix

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