Editorial Technical Reference

Central Manifold (Header Pipe)

This page explains how Central Manifold (Header Pipe) is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A primary distribution or collection pipe that serves as the main conduit within a lower distributor/collector assembly.

Product Specifications

Technical details and manufacturing context for Central Manifold (Header Pipe)

Definition
The Central Manifold (Header Pipe) is the core piping component of a Lower Distributor/Collector system. It functions as the main artery, receiving fluid from a single source or distributing it to multiple branch lines (or vice-versa for collection). Its design ensures balanced flow distribution or efficient collection from various points to a central outlet within the assembly. The manifold is typically manufactured from carbon steel or stainless steel, with material grades such as 304/316L available for corrosion resistance. Key parameters include nominal diameter (DN50–DN300 per ISO 6708), wall thickness (3.0–12.0 mm per ISO 4200), and length (500–6000 mm, customizable). Operating pressure ranges from 1.0 to 1.6 MPa, and operating temperature from -40 to 85°C. Surface roughness can be specified to ≤0.8 μm Ra (ISO 4287) for hygienic applications. End connections may be butt weld, socket weld, or flanged (ASME B16.25). Weight varies from 15 to 120 kg depending on size and wall thickness. Tolerances are ±0.5 mm for length and diameter (ISO 2768-m). Hydrostatic test pressure is 2.4 MPa (1.5× rated pressure). These values are reference ranges; verify model-specific specifications with the legal manufacturer or supplier before procurement.
Working Principle
Fluid enters (or exits) the central manifold through a primary port. For distribution, the manifold's internal volume and port arrangement allow the fluid to be evenly split and directed into multiple outlet branches connected to it. For collection, multiple inlet branches converge into the manifold, where fluid combines before exiting through the primary port. Its operation relies on maintaining pressure integrity and minimizing flow resistance.
Common Materials
Carbon Steel, Stainless Steel
Technical Parameters
ParameterTypical rangeNotes & selection driver
Nominal DiameterDN50–DN300 mmMatches pipe size of the systemISO 6708
Wall Thickness3.0–12.0 mmPressure rating and mechanical strengthISO 4200
Length500–6000 mmCustomizable per layout
Operating Temperature-40–85 °CSeal material limits
Material Grade304/316LCorrosion resistanceASTM A312
Surface Roughness≤0.8 μm RaFor hygienic applicationsISO 4287
End ConnectionBW/SW/FLGButt weld, socket weld, or flangedASME B16.25
Weight15–120 kgDepends on size and wall thickness
Tolerance±0.5 mmFor length and diameterISO 2768-m
Hydrostatic Test Pressure2.4 MPa1.5× rated pressureISO 5208

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 Body
    Forms the main pressure vessel and flow path of the manifold.
    Material: steel
  • Branch Ports Part
    Threaded or flanged openings for connecting distribution/collection lines.
    Material: steel
  • End Caps/Flanges Part
    Seal the ends of the manifold pipe section.
    Material: steel

Application & selection

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 25 bar (362 psi)
flow rate: Dependent on manifold size and configuration
temperature: -40°C to 150°C
slurry concentration: Up to 40% solids by weight (depending on particle size and abrasiveness)
Media Compatibility
✓ Water and aqueous solutions ✓ Industrial gases (compressed air, nitrogen) ✓ Non-corrosive process fluids
Unsuitable: Highly corrosive acids or bases (e.g., concentrated sulfuric acid, caustic soda)
Sizing Data Required
  • Required flow rate (m³/h or GPM)
  • System operating pressure (bar or psi)
  • Number of branch connections required

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Corrosion fatigue cracking
Cause: Cyclic pressure fluctuations combined with corrosive fluid environment, leading to crack initiation and propagation at stress concentration points like welds or bends.
Erosion-corrosion thinning
Cause: High-velocity particle-laden flow causing mechanical wear, accelerated by chemical attack from process fluids, particularly at flow direction changes or restrictions.
Maintenance Indicators
  • Visible weeping or small leaks at welds, flanges, or fittings indicating crack development
  • Audible hammering or vibration noises during flow changes suggesting water hammer or flow-induced resonance
Engineering Tips
  • Implement regular ultrasonic thickness testing at high-risk areas (bends, welds, downstream of restrictions) to monitor wall thinning trends
  • Install properly sized surge suppression devices and ensure gradual valve operation to minimize pressure transients and water hammer effects

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ASME B31.3 - Process Piping DIN EN 10216-2 - Seamless Steel Tubes for Pressure Purposes

Quoted from the published standard.

Manufacturing Precision
  • Bore Diameter: +/-0.05mm
  • Flatness of Flange Faces: 0.1mm
Quality Inspection
  • Hydrostatic Pressure Test
  • Dimensional Verification with CMM
Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

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Manufacturers of Central Manifold (Header Pipe)

2 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Hydrath Power
Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Central Manifold”
View source page ↗ hydrath.com · recorded 2026-08-27
Target Hydraulics
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Hydraulic Central Manifold”
View source page ↗ target-hydraulics.com · recorded 2026-08-27

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Frequently Asked Questions

What materials are available for the central manifold?

The central manifold can be made from carbon steel or stainless steel, with material grades such as 304/316L available for corrosion resistance. Confirm the specific grade with the supplier.

What is the operating pressure range?

The operating pressure range is 1.0 to 1.6 MPa. Always verify the actual pressure rating for your model.

What end connections are available?

End connections can be butt weld, socket weld, or flanged, as per ASME B16.25. The choice depends on the system design and installation requirements.

How is the manifold tested?

The manifold is hydrostatically tested at 2.4 MPa, which is 1.5 times the rated pressure. This test ensures pressure integrity before installation.

Related equipment

Applied To / Applications

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

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Central Manifold (Header Pipe).

Data Basis

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

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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