Structured Manufacturing Data (2026)

Valve Body

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Valve Body used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Valve Body is characterized by the integration of Inlet Flange and Outlet Flange. In industrial production environments, manufacturers listed on CNFX commonly emphasize Carbon Steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

The main structural housing of a pressure relief valve that contains and directs fluid flow.

Product Specifications

Technical details and manufacturing context for Valve Body

Definition
The valve body is the primary structural component of a Steam Generator Pressure Relief Valve Assembly that houses the internal valve mechanisms, provides the flow path for steam, and connects to the steam generator system. It withstands high pressure and temperature conditions while maintaining structural integrity.
Working Principle
The valve body provides a sealed chamber where steam pressure acts on the valve disc. When pressure exceeds the set point, the disc lifts, allowing steam to flow through the body's outlet port to relieve pressure. The body's internal geometry controls flow characteristics and pressure drop.
Common Materials
Carbon Steel, Stainless Steel, Alloy Steel
Technical Parameters
  • Nominal pipe size (NPS) or flange size for connection to steam generator system (mm) Per Request
Components / BOM
  • Inlet Flange Part
    Connects valve body to steam generator piping
    Material: Carbon Steel
  • Outlet Flange Part
    Connects valve body to discharge piping
    Material: Carbon Steel
  • Body Cavity Part
    Internal chamber where pressure relief occurs
    Material: Stainless Steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Valve Body.

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 1000 psi (6.9 MPa)
flow rate: Dependent on orifice size, typically 0.1-500 GPM
temperature: -20°C to 200°C
slurry concentration: Up to 20% solids by weight
Media Compatibility
✓ Water/Steam Systems ✓ Hydraulic Oil ✓ Natural Gas
Unsuitable: Hydrochloric Acid (HCl) due to corrosion risk
Sizing Data Required
  • Required Flow Rate (GPM or m³/h)
  • Set Pressure (psi or bar)
  • Fluid Type and Viscosity

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Cavitation
Cause: Rapid pressure drop across valve causing vapor bubble formation and implosion, leading to pitting and material loss on valve body and trim surfaces.
Corrosion
Cause: Chemical reaction between valve body material and process fluid, accelerated by temperature, pressure, and impurities, resulting in wall thinning and potential leakage.
Maintenance Indicators
  • Unusual audible hissing or whistling indicating internal leakage or flow restriction
  • Visible external weeping or seepage at body-bonnet joint or stem packing area
Engineering Tips
  • Implement proper valve sizing and selection to maintain operating pressure above fluid vapor pressure, preventing cavitation conditions.
  • Establish routine ultrasonic thickness testing and corrosion coupon monitoring programs to track material degradation rates.

Compliance & Manufacturing Standards

Reference Standards
ISO 17292:2015 (Metal ball valves for petroleum, petrochemical and allied industries) ANSI/ASME B16.34:2020 (Valves - Flanged, Threaded, and Welding End) DIN EN 12516-1:2014 (Industrial valves - Shell design strength - Part 1: Tabulation method for steel valve shells)
Manufacturing Precision
  • Bore diameter: +/-0.05 mm
  • Flange flatness: 0.1 mm per 100 mm diameter
Quality Inspection
  • Hydrostatic pressure test (per ISO 5208 or API 598)
  • Dye penetrant inspection (for surface defects)

Factories Producing Valve Body

Manufacturer profiles with relevant production capability in China

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

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What materials are available for valve bodies in machinery manufacturing?

Our valve bodies are manufactured in carbon steel, stainless steel, and alloy steel to meet various industrial requirements for strength, corrosion resistance, and temperature tolerance.

What components are included in a standard valve body BOM?

A standard valve body bill of materials includes the main body cavity, inlet flange, and outlet flange, which work together to contain and direct fluid flow in pressure relief applications.

How does the valve body function in pressure relief systems?

The valve body serves as the structural housing that contains internal components and directs fluid flow, providing the critical framework that allows pressure relief valves to operate safely and efficiently in industrial systems.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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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