INDUSTRY COMPONENT

Valve Body

Valve body is the main structural housing of a molten metal flow control valve, designed to withstand extreme temperatures and corrosive environments while directing metal flow.

Component Specifications

Definition
The valve body serves as the primary pressure-containing component in molten metal flow control systems, typically constructed from high-temperature resistant alloys to handle liquid metals at temperatures exceeding 700°C. It provides the structural framework for valve internals, maintains pressure integrity, and directs flow through precisely engineered passages. Critical features include thermal expansion compensation, erosion resistance, and leak-proof sealing surfaces.
Working Principle
The valve body operates by containing and directing molten metal flow through internal passages controlled by valve mechanisms. It maintains structural integrity under thermal cycling (expansion/contraction) and pressure differentials while providing mounting surfaces for actuators and seals. The body's geometry minimizes turbulence and prevents metal solidification during flow interruptions.
Materials
High-nickel alloys (Inconel 625/718), cobalt-based superalloys (Stellite), refractory metals (molybdenum alloys), or ceramic-lined steel composites. Typical specifications: ASTM A297/A351, UNS N06625, minimum 0.2% yield strength 550 MPa at 800°C.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Surface FinishRa 3.2 μm maximum
Connection TypeFlanged DIN/ANSI
Pressure Rating10-50 bar
Temperature Range700-1200°C
Body Wall Thickness15-40 mm
Flow Coefficient (Cv)15-200

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards
ISO 16135, DIN 3356, ASME B16.34

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Thermal fatigue cracking
  • Erosion of internal passages
  • Creep deformation at sustained high temperatures
  • Galvanic corrosion with dissimilar metals
FMEA Triads
Trigger: Thermal cycling stress
Failure: Fatigue cracks in body wall
Mitigation: Implement controlled heating/cooling cycles and use materials with high thermal fatigue resistance
Trigger: Molten metal erosion
Failure: Wall thinning and leakage
Mitigation: Apply ceramic linings or use erosion-resistant alloys in high-velocity flow areas
Trigger: Differential thermal expansion
Failure: Flange leakage or distortion
Mitigation: Design with expansion compensation features and proper bolt loading procedures

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
Dimensional tolerances per ISO 2768-m, pressure testing to 1.5x design pressure
Test Method
Hydrostatic pressure test, liquid penetrant inspection, radiographic testing for critical sections

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

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.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Valve Body

4 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.

ZFA Valve
Tianjin, Tianjin, CN
Founded 2006
ISO9001 CE WRAS ISO14001 +2
Also makes: Gate/Valve, Pneumatic Actuator, Valve Actuator and 3 more
Managed by the manufacturer
Listed on the company's own website
Dandong Foundry (Liaoning Borui Machinery Co., Ltd)
Dandong, Liaoning, CN
ISO 9001
Listed on the company's own website · profile compiled by CNFX from public sources
Ningbo Saivs Machinery Co., Ltd
Ningbo, Zhejiang, CN
Founded 1989
TS16949
Listed on the company's own website · profile compiled by CNFX from public sources
Plumberstar
Shanghai, CN
Also makes: Butterfly Valve, Heating System, Pressure Gauge and 9 more
Listed on the company's own website · profile compiled by CNFX from public sources

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

Related Components

Work Rolls
Work rolls are precision cylindrical components in heavy-duty rolling mills that directly contact and deform metal during rolling operations.
Venting Channels
Venting channels are precision-engineered passages in metal casting mold cores designed to allow gases to escape during the molten metal pouring process, preventing defects and ensuring high-quality castings.
Aluminum Matrix
Aluminum matrix is the continuous metallic phase in aluminum matrix composites, providing structural integrity and thermal/electrical conductivity in hot-forged aluminum alloy billets.
Grain Structure
The crystalline arrangement of atoms in hot-forged aluminum alloy billets, determining mechanical properties and performance.

Frequently Asked Questions

What materials are best for molten metal valve bodies?

High-nickel alloys like Inconel provide optimal balance of high-temperature strength, corrosion resistance against molten metals, and thermal fatigue resistance.

How do valve bodies handle thermal expansion?

Design incorporates expansion joints, flexible connections, and calculated clearances to accommodate differential expansion between body materials and internal components.

What maintenance do valve bodies require?

Regular thermal cycling inspection, erosion monitoring of internal passages, and flange bolt retorquing to maintain seal integrity under temperature variations.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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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