Editorial Technical Reference

Header Manifold

This page explains how Header Manifold 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 distribution component in cooling water systems that collects and redirects fluid flow through multiple branches.

Product Specifications

Technical details and manufacturing context for Header Manifold

Definition
A header manifold is a critical piping component within cooling water header/piping systems that serves as a central distribution point. It collects incoming cooling water from a main supply line and evenly distributes it to multiple outlet branches that feed various cooling circuits, heat exchangers, or equipment. Conversely, it can also function as a collection manifold to gather return water from multiple sources back into a main return line. This ensures balanced flow distribution, pressure management, and efficient thermal transfer throughout the cooling system. The manifold is typically constructed from materials such as carbon steel, stainless steel, PVC/CPVC, or copper alloy, selected based on corrosion resistance and pressure rating. Key parameters include nominal diameter (DN15–DN100 per ISO 6708), operating pressure (1.0–1.6 MPa), operating temperature (-10 to 120°C), flow coefficient (Cv 2.5–150), body material (WCB/CF8/CF8M per ASTM A216/A351), end connections (flanged, threaded, or welded, 1/2–4 inch per ASME B16.5), leakage rate (0.01–0.1 mL/min), weight (5–50 kg), surface finish (Ra 0.8–3.2 μm per ISO 1302), and pressure rating (PN16–PN40 per EN 1092-1). These values are reference ranges; actual specifications must be confirmed with the manufacturer for the specific model and application. The manifold's design and configuration should be verified against system requirements, including flow balancing, pressure drop, and thermal performance. Regular inspection for leaks, corrosion, and fouling is recommended, and maintenance signals include unusual pressure fluctuations or temperature imbalances. Failure boundaries include exceeding pressure or temperature limits, which can lead to seal degradation or structural failure. Always consult the legal manufacturer for detailed technical data and compliance with applicable standards.
Working Principle
The header manifold operates on fluid dynamics principles. Inlet water enters the main manifold body under pressure. The internal geometry (typically a larger diameter chamber or pipe) reduces velocity and equalizes pressure, allowing water to branch out uniformly through multiple outlet ports. Baffles, internal dividers, or specific port arrangements may be used to minimize turbulence and ensure even flow distribution to all connected circuits. Valves are often installed at each branch for flow control and isolation.
Common Materials
Carbon Steel, Stainless Steel, PVC/CPVC, Copper Alloy
Technical Parameters
ParameterTypical rangeNotes & selection driver
Nominal DiameterDN15–DN100 mmDetermines flow capacity and connection size.ISO 6708
Operating Temperature-10–120 °CAbove 120°C may degrade seals.
Flow Coefficient2.5–150 CvIndicates flow capacity at a given pressure drop.
Body MaterialWCB/CF8/CF8MSelect for corrosion resistance and pressure rating.ASTM A216/A351
End Connection1/2–4 inchFlanged, threaded, or welded options.ASME B16.5
Leakage Rate0.01–0.1 mL/minClass VI shutoff for tight sealing.
Weight5–50 kgDepends on size and material.
Surface FinishRa 0.8–3.2 μmSmoother finish reduces fouling and pressure drop.ISO 1302
Pressure RatingPN16–PN40 barHigher rating for high-pressure systems.EN 1092-1

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
    Main pressure vessel that contains and distributes the cooling water flow
    Material: Carbon Steel/Stainless Steel
  • Branch Outlet Nozzles Part
    Threaded or flanged connections for attaching branch piping to individual circuits
    Material: Carbon Steel/Stainless Steel
  • Inlet Nozzle Part
    Connection point for the main cooling water supply line
    Material: Carbon Steel/Stainless Steel
  • Mounting Brackets/Supports Part
    Structural supports to secure the manifold in place and manage pipe stress
    Material: Carbon Steel
  • Internal Baffle Optional
    Evens out the flow inside the header so every branch gets the same share.
  • Branch Valve Optional
    Lets one circuit be throttled or shut without stopping the rest.

Applied To / Applications

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

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 10 bar (150 psi)
flow rate: Up to 500 L/min per branch
temperature: -20°C to 120°C
slurry concentration: Up to 5% solids by weight
Media Compatibility
✓ Cooling water (treated) ✓ Glycol-water mixtures ✓ Industrial process fluids (non-corrosive)
Unsuitable: Highly corrosive chemicals (e.g., concentrated acids, strong oxidizers)
Sizing Data Required
  • Total system flow rate (L/min)
  • Number of required branch connections
  • Maximum operating pressure (bar)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Crevice corrosion
Cause: Stagnant fluid accumulation in low-flow areas, often due to design flaws or improper installation, leading to localized electrochemical attack and pitting
Thermal fatigue cracking
Cause: Cyclic thermal stresses from temperature fluctuations in process fluids, exacerbated by material incompatibility or inadequate thermal expansion allowances
Maintenance Indicators
  • Visible weeping or small droplets forming at flange connections or weld seams under pressure
  • Audible high-frequency whistling or hissing during pressure changes indicating developing leaks
Engineering Tips
  • Implement regular thermographic surveys to detect abnormal temperature gradients indicating flow restrictions or insulation failures
  • Install corrosion coupons or ultrasonic thickness monitoring points at strategic locations to track material degradation rates

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 B16.5 - Pipe flanges and flanged fittings PED 2014/68/EU - Pressure Equipment Directive (CE marking)

Quoted from the published standard.

Manufacturing Precision
  • Bore diameter: ±0.05mm
  • Surface flatness: 0.1mm per 100mm
Quality Inspection
  • Hydrostatic pressure test
  • Dimensional verification with CMM

Manufacturers of Header Manifold

3 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.

Hangzhou Taimei Performance Co.,Ltd
Zhejiang, CN
Also makes: Air Intake / Pump
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Header Manifold”
View source page ↗ taimeiperformance.com · checked 2026-09-11
JTLD AUTOMOTIVE PARTS CO., LIMITED
Qingdao, Shandong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Custom Exhaust Header Manifold”
View source page ↗ jtldautomotive.com · checked 2026-08-22
Suzhou Orl Power Engineering Co., Ltd.
Jiangsu, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Header / Manifold”
View source page ↗ orlpower.com · checked 2026-09-11

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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Frequently Asked Questions

What is the primary function of a header manifold?

It collects cooling water from a main supply line and distributes it evenly to multiple branches, or collects return water from multiple sources into a main return line, ensuring balanced flow and pressure.

What materials are available for header manifolds?

Common materials include carbon steel, stainless steel, PVC/CPVC, and copper alloy. Selection depends on corrosion resistance and pressure rating requirements.

What are typical pressure and temperature ranges?

Operating pressure is typically 1.0–1.6 MPa, and operating temperature ranges from -10 to 120°C. These are reference ranges; confirm with manufacturer for specific models.

How do I verify the manifold meets my system requirements?

Check the nominal diameter, flow coefficient, pressure rating, and end connections against your system design. Always consult the manufacturer for detailed technical data and compliance with standards.

Data Basis

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

Preliminary Technical Classification
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