Structured Manufacturing Data (2026)

Safety Vent (CID)

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Safety Vent (CID) used in the Electrical Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Safety Vent (CID) is characterized by the integration of Rupture Disc and Vent Housing. In industrial production environments, manufacturers listed on CNFX commonly emphasize Nickel-plated steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A pressure relief device integrated into the Cell Housing Assembly to prevent dangerous pressure buildup.

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Product Specifications

Technical details and manufacturing context for Safety Vent (CID)

Definition
The Safety Vent (CID) is a critical safety component within the Cell Housing Assembly designed to automatically release excess internal pressure that could otherwise lead to cell rupture, thermal runaway, or explosion. It functions as the primary pressure management mechanism, maintaining safe operating conditions by venting gases when predetermined pressure thresholds are exceeded.
Working Principle
The vent operates on a pressure differential principle. It contains a calibrated rupture disc or pressure-sensitive membrane that remains sealed under normal operating pressures. When internal pressure exceeds the designed safety threshold (typically due to gas generation during overcharging, internal short circuits, or thermal events), the disc ruptures or the membrane opens, creating a controlled pathway for gas to escape, thereby relieving pressure and preventing catastrophic failure of the cell housing.
Common Materials
Nickel-plated steel, Stainless steel, Polymer composite membrane
Technical Parameters
  • Burst pressure rating - the precise pressure at which the vent activates to release gases. (kPa) Customizable
Components / BOM
  • Rupture Disc
    Pressure-sensitive element that fractures at designated burst pressure to create vent opening.
    Material: Nickel-plated steel
  • Vent Housing
    Structural frame that secures the rupture disc and directs gas flow outward.
    Material: Stainless steel
  • Sealing Gasket Part
    Ensures airtight seal between vent assembly and cell housing under normal conditions.
    Material: Polymer composite

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Safety Vent (CID).

electrical equipment safety vent CID pressure relief device cell housing assembly nickel-plated steel safety vent rupture disc vent housing gasket polymer composite membrane pressure vent

Applied To / Applications

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

Cell Housing Assembly
View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0.1 to 10 bar (g) with burst pressure typically 1.5x max operating pressure
flow rate: Vent capacity: 0.5 to 50 L/min air equivalent at 1 bar differential
temperature: -40°C to 150°C
slurry concentration: Compatible with slurries up to 40% solids by weight, particle size <100 μm
Media Compatibility
✓ Lithium-ion battery electrolytes (organic solvents) ✓ Aqueous process fluids (pH 4-10) ✓ Dry inert gases (N2, Ar)
Unsuitable: Concentrated hydrofluoric acid or halogenated solvents
Sizing Data Required
  • Maximum expected gas generation rate (L/min at STP)
  • Required burst pressure setting (bar)
  • Cell housing free volume (L)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Corrosion-induced leakage
Cause: Exposure to corrosive process fluids or atmospheric conditions leading to material degradation, particularly at sealing surfaces or thin sections, compromising pressure relief integrity.
Fouling and blockage
Cause: Accumulation of process residues, scale, or foreign materials on the vent seat or discharge path, preventing proper opening or resealing, often due to inadequate filtration or maintenance intervals.
Maintenance Indicators
  • Visible weeping or continuous leakage around the vent seat or body during normal operation, indicating seal failure or improper seating.
  • Audible hissing or whistling at pressures below the set relief point, suggesting partial opening or internal damage.
Engineering Tips
  • Implement routine inspection and testing per API 576 standards, including bench testing for set pressure and seat tightness, to verify operational readiness and detect early degradation.
  • Install upstream strainers or filters to prevent particulate ingress, and specify corrosion-resistant materials (e.g., stainless steel, alloys) compatible with process media to reduce wear and chemical attack.

Compliance & Manufacturing Standards

Reference Standards
ISO 4126-1: Safety devices for protection against excessive pressure - Part 1: Safety valves ASME BPVC Section VIII: Rules for Construction of Pressure Vessels DIN EN 13648-1: Cryogenic vessels - Safety devices for protection against excessive pressure - Part 1: Safety valves for cryogenic service
Manufacturing Precision
  • Bore diameter: +/-0.025 mm
  • Seat flatness: 0.05 mm per 100 mm diameter
Quality Inspection
  • Hydrostatic pressure test at 1.5x rated pressure
  • Leakage test with helium mass spectrometer

Factories Producing Safety Vent (CID)

Manufacturer profiles with relevant production capability in China

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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 is the primary function of the Safety Vent (CID) in electrical equipment?

The Safety Vent (CID) acts as a pressure relief device integrated into the Cell Housing Assembly to prevent dangerous pressure buildup that could lead to equipment failure or safety hazards.

What materials are used in the construction of this safety vent?

This safety vent is constructed from durable materials including nickel-plated steel and stainless steel for the housing components, along with a polymer composite membrane that provides reliable pressure relief.

What are the main components in the Safety Vent (CID) BOM?

The Bill of Materials includes three key components: the Rupture Disc that activates under pressure, the Vent Housing that contains the assembly, and the Sealing Gasket that ensures proper installation and prevents leaks.

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 for Electrical Equipment Manufacturing.

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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