Editorial Technical Reference

Head Body

This page explains how Head Body 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

The main structural housing of a distribution head that contains and supports internal components.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Head Body

Definition
The head body is the primary structural component of a distribution head, providing a rigid enclosure that houses and protects internal mechanisms such as valves, seals, and flow channels. It ensures proper alignment of components, maintains pressure integrity, and facilitates connection to piping systems. As a static pressure vessel and mounting platform, it does not move but provides the necessary structural integrity to withstand operational pressures and mechanical loads while maintaining precise alignment for the moving parts it contains. The head body is available in materials such as stainless steel, carbon steel, and cast iron, with material grades WCB, CF8, and CF8M per ASTM A216/A351. Key parameters include operating pressure from 1.0 to 1.6 MPa, nominal diameter from 15 to 600 mm (ISO 6708), temperature range from -40 to 85 °C, surface roughness Ra 0.8 to 1.6 μm (ISO 1302), weight from 2.5 to 120 kg, ingress protection IP65 to IP68 (IEC 60529), coating thickness 60 to 120 μm (ISO 19840), dimensional tolerance ±0.5 mm (ISO 2768-m), and pressure rating PN16 to PN40 (ISO 7268). These values are reference ranges and must be confirmed for the specific model and application. The head body is designed for use in distribution systems where it serves as the central hub for fluid control. It is essential to verify all specifications, including material grades, pressure ratings, and standards, with the legal manufacturer or supplier to ensure suitability for the intended service conditions.
Working Principle
The head body functions as a static pressure vessel and mounting platform. It does not move but provides the necessary structural integrity to withstand operational pressures and mechanical loads while maintaining precise alignment for the moving parts it contains. The body is designed to contain internal components such as valves and seals, ensuring they operate correctly under pressure. It also facilitates connection to piping systems, allowing for proper fluid flow distribution. The structural design must ensure that under operating conditions, the body does not deform or fail, maintaining the integrity of the entire distribution head.
Common Materials
Stainless Steel, Carbon Steel, Cast Iron
Technical Parameters
ParameterTypical rangeNotes & selection driver
Nominal Diameter15–600 mmCustom sizes available on requestISO 6708
Temperature Range-40–85 °CExtended range with special seals
Material GradeWCB/CF8/CF8MOther alloys on requestASTM A216/A351
Surface RoughnessRa 0.8–1.6 μmLower roughness for high-purity applicationsISO 1302
Weight2.5–120 kgDepends on size and material
Ingress ProtectionIP65–IP68IP68 for submersible applicationsIEC 60529
Coating Thickness60–120 μmEpoxy or zinc-rich primerISO 19840
Tolerance on Dimensions±0.5 mmTighter tolerances possibleISO 2768-m
Pressure RatingPN16–PN40Higher ratings on requestISO 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
  • Mounting Flange Part
    Provides attachment points for securing the distribution head to equipment or piping
    Material: Steel
  • Internal Cavity Part
    Hollow space designed to accommodate valves, seals, and flow channels
    Material: Same as body material
  • Port Openings Part
    Precision-machined openings for fluid inlet, outlet, and auxiliary connections
    Material: Same as body material

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 MPa (100 bar)
flow rate: Dependent on internal port sizing, typically 0-500 L/min
temperature: -40°C to 150°C
slurry concentration: Up to 30% solids by weight (dependent on particle size and abrasiveness)
Media Compatibility
✓ Water-based fluids ✓ Hydraulic oils (mineral/synthetic) ✓ Non-corrosive chemical solutions
Unsuitable: Highly corrosive acids (e.g., hydrochloric, sulfuric) or environments with extreme thermal cycling
Sizing Data Required
  • Maximum operating pressure (MPa/bar)
  • Fluid type and viscosity (cSt)
  • Port connection size and standard (e.g., NPT, BSP, SAE)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Bearing fatigue failure
Cause: Cyclic loading from pump operation exceeding bearing fatigue limits, often accelerated by misalignment, improper lubrication, or contamination
Impeller wear/corrosion
Cause: Abrasive particles in fluid causing erosion, or chemical attack from corrosive media degrading impeller material integrity
Maintenance Indicators
  • Unusual vibration or audible knocking from pump housing indicating bearing wear or impeller imbalance
  • Visible fluid leakage at shaft seals or casing joints suggesting seal degradation or gasket failure
Engineering Tips
  • Implement precision laser alignment during installation and re-alignment after maintenance to reduce bearing loads and vibration
  • Establish condition-based monitoring with vibration analysis and thermography to detect early degradation before catastrophic failure

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
ANSI B18.2.1 - Square and Hex Bolts and Screws DIN 931 - Hexagon Head Bolts

Quoted from the published standard.

Manufacturing Precision
  • Thread Pitch: +/-0.05mm
  • Head Height: +/-0.1mm
Quality Inspection
  • Dimensional Verification with CMM
  • Hardness Testing (Rockwell C Scale)

Manufacturers of Head Body

Manufacturer profiles associated with Head Body.

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Frequently Asked Questions

What is the function of a head body?

The head body is the main structural housing of a distribution head. It contains and supports internal components such as valves, seals, and flow channels, ensuring proper alignment and pressure integrity.

What materials are available for the head body?

The head body can be made from stainless steel, carbon steel, or cast iron. Material grades include WCB, CF8, and CF8M per ASTM A216/A351, but other alloys may be available on request.

What are the typical operating pressure and temperature ranges?

The operating pressure range is 1.0 to 1.6 MPa, and the temperature range is -40 to 85 °C. Extended temperature ranges may be possible with special seals.

How do I verify the specifications for my application?

All listed parameters are reference ranges. You must confirm the exact values, including material grades, pressure ratings, and standards, with the legal manufacturer or supplier to ensure suitability for your specific application.

Data Basis

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

Preliminary Technical Classification
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