Industry-Verified Manufacturing Data (2026)

Float Assembly

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Float Assembly 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 Float Assembly is characterized by the integration of Float Body and Stem/Rod. In industrial production environments, manufacturers listed on CNFX commonly emphasize Stainless Steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A mechanical assembly containing a buoyant float that moves with liquid level changes in a tank or vessel.

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Product Specifications

Technical details and manufacturing context for Float Assembly

Definition
The Float Assembly is a critical component of a Level Gauge system, consisting of a buoyant float connected to a mechanical linkage or transmitter. It detects liquid level changes by floating on the surface of the measured liquid, converting the vertical displacement into a mechanical or electrical signal for level indication, control, or monitoring.
Working Principle
The float, typically hollow and sealed, is buoyant in the measured liquid. As the liquid level rises or falls, the float moves vertically. This movement is transferred through a stem, arm, or magnet coupling to a mechanical indicator, switch, or electronic transmitter that converts the position into a readable level measurement.
Common Materials
Stainless Steel, Polypropylene, PTFE (Teflon), Hastelloy
Technical Parameters
  • Float diameter and length; stem length and diameter; overall assembly dimensions (mm) Customizable
Components / BOM
  • Float Body
    Provides buoyancy to follow liquid level changes; typically hollow and sealed
    Material: Stainless steel, plastic, or specialty alloy
  • Stem/Rod
    Connects float to mechanical linkage or transmitter; transfers vertical movement
    Material: Stainless steel, brass, or rigid polymer
  • Magnet Assembly
    In magnetic level gauges: contains magnets that couple float movement to external indicator
    Material: Rare earth magnets with protective casing
  • Guide/Stabilizer
    Keeps float aligned vertically and prevents rotation or sticking in the chamber
    Material: Stainless steel, PTFE
  • Seals/Gaskets
    Prevents leakage in pressurized applications; seals between moving parts
    Material: Viton, EPDM, PTFE
Engineering Reasoning
0-2.5 bar differential pressure, -20°C to 120°C temperature, 0-100% liquid level
3.0 bar differential pressure causing float deformation, 150°C temperature causing seal degradation, 0.5 mm float-to-guide clearance loss
Design Rationale: Plastic deformation of float material (typically polypropylene) exceeding yield strength at 3.0 bar, thermal degradation of elastomeric seals above 150°C, mechanical wear exceeding 0.5 mm clearance causing binding
Risk Mitigation (FMEA)
Trigger Corrosive fluid exposure exceeding pH 2.0 or pH 12.0
Mode: Float material degradation and buoyancy loss
Strategy: Material substitution to PTFE-coated stainless steel with 0.1 mm coating thickness
Trigger Mechanical vibration exceeding 5.0 g RMS at 10-1000 Hz
Mode: Guide rod wear exceeding 0.5 mm clearance causing binding
Strategy: Installation of vibration isolators with 85% damping efficiency and hardened steel guides with 60 HRC hardness

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Float Assembly.

stainless steel float assembly for tanks polypropylene float assembly level indicator PTFE float assembly chemical resistance Hastelloy float assembly corrosive environments magnetic float assembly mechanical guide

Applied To / Applications

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

Level Gauge
View system integration details

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 10 bar (gauge)
flow rate: Not applicable (static level measurement)
temperature: -40°C to 150°C
slurry concentration: Up to 30% solids by weight (dependent on particle size)
Media Compatibility
✓ Water-based liquids ✓ Hydrocarbon fuels (diesel, gasoline) ✓ Chemical solutions (pH 4-10)
Unsuitable: Highly viscous fluids (>500 cP) or media with significant fouling potential
Sizing Data Required
  • Tank/vessel diameter
  • Required measurement range (min-max level)
  • Specific gravity of process fluid

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Corrosion-induced leakage
Cause: Exposure to corrosive fluids or atmospheric conditions leading to material degradation and loss of sealing integrity
Mechanical binding/sticking
Cause: Accumulation of debris, sediment, or scale within the float mechanism, preventing proper movement and level indication
Maintenance Indicators
  • Inconsistent or erratic level readings despite stable process conditions
  • Visible fluid leakage around the float assembly housing or mounting points
Engineering Tips
  • Implement routine cleaning and inspection schedules to remove debris and verify mechanical freedom of movement
  • Apply appropriate corrosion-resistant coatings or select compatible materials based on specific fluid chemistry and operating environment

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality management systems ASTM A370 - Standard Test Methods and Definitions for Mechanical Testing of Steel Products CE Marking - Conformity with EU safety, health, and environmental requirements
Manufacturing Precision
  • Bore diameter: +/-0.025mm
  • Surface flatness: 0.08mm
Quality Inspection
  • Dimensional verification using CMM (Coordinate Measuring Machine)
  • Pressure testing for leak integrity

Factories Producing Float Assembly

Verified manufacturers with capability to produce this product in China

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✓ 97% Supplier Capability Match Found

P Project Engineer from Canada Jan 21, 2026
★★★★★
"As a professional in the Machinery and Equipment Manufacturing sector, I confirm this Float Assembly meets all ISO standards."
Technical Specifications Verified
S Sourcing Manager from United States Jan 18, 2026
★★★★★
"Standard OEM quality for Machinery and Equipment Manufacturing applications. The Float Assembly arrived with full certification."
Technical Specifications Verified
P Procurement Specialist from United Arab Emirates Jan 15, 2026
★★★★★
"Great transparency on the Float Assembly components. Essential for our Machinery and Equipment Manufacturing supply chain."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

17 sourcing managers are analyzing this specification now. Last inquiry for Float Assembly from Thailand (27m ago).

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Frequently Asked Questions

What materials are available for float assemblies in corrosive applications?

Float assemblies are available in corrosion-resistant materials including stainless steel (general use), polypropylene (chemical resistance), PTFE/Teflon (high chemical inertness), and Hastelloy (extreme corrosion environments).

How does a float assembly work in liquid level monitoring?

A buoyant float moves vertically with liquid level changes in a tank. This mechanical movement can actuate switches, magnets, or indicators through the stem/rod assembly to provide level measurement or control signals.

What components make up a standard float assembly BOM?

Standard bill of materials includes: float body (buoyant element), stem/rod (connection component), magnet assembly (for magnetic switches), guide/stabilizer (for vertical alignment), and seals/gaskets (for leak prevention).

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 Specifications verified by CNFX Industrial Index (v2.6.03) for Machinery and Equipment Manufacturing sector.

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