Structured Manufacturing Data (2026)

Safety Valve

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Safety Valve 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 Safety Valve is characterized by the integration of Valve Body and Spring. In industrial production environments, manufacturers listed on CNFX commonly emphasize Stainless Steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A pressure relief device designed to automatically release excess pressure from a gas cylinder or generator to prevent catastrophic failure.

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Product Specifications

Technical details and manufacturing context for Safety Valve

Definition
A critical safety component in gas cylinders and generators that automatically opens when internal pressure exceeds a predetermined set point, allowing controlled release of gas to prevent overpressure conditions that could lead to explosions or equipment damage. It reseals automatically when pressure returns to safe levels.
Working Principle
Operates based on spring-loaded mechanism where a calibrated spring holds a valve disc against a seat. When system pressure exceeds the spring force, the valve opens to release pressure. Once pressure drops below the set point, spring force closes the valve.
Common Materials
Stainless Steel, Brass
Technical Parameters
  • Set pressure at which the valve opens (bar) Customizable
Components / BOM
  • Valve Body
    Main housing containing all internal components
    Material: Stainless Steel
  • Spring Part
    Provides calibrated force to keep valve closed until set pressure is reached
    Material: Spring Steel
  • Valve Disc Part
    Sealing surface that opens to release pressure
    Material: Stainless Steel
  • Adjustment Screw Part
    Allows calibration of set pressure
    Material: Brass

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Safety Valve.

stainless steel safety valve for gas cylinders pressure relief valve for industrial generators brass safety valve with adjustment screw automatic pressure release valve machinery safety valve replacement parts spring disc

Applied To / Applications

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

Gas Cylinder/Generator
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Air Receiver Tank
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Impregnation Tank
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Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Set pressure range: 1 to 300 bar
flow rate: Based on orifice size (e.g., D to T orifice per API 526)
temperature: -20°C to 150°C
slurry concentration: Not applicable for gas cylinders/generators; suitable for clean gases only
Media Compatibility
✓ Natural gas ✓ Compressed air ✓ Nitrogen
Unsuitable: Corrosive or particulate-laden gases (e.g., chlorine, unscrubbed biogas)
Sizing Data Required
  • Required set pressure (bar)
  • Required relieving capacity (kg/h or Nm³/h)
  • Gas properties (molecular weight, specific heat ratio)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Sticking or binding
Cause: Corrosion buildup, fouling from process media, or lack of lubrication on moving parts preventing proper opening/closing.
Leakage (failure to seat properly)
Cause: Worn or damaged seating surfaces from erosion, corrosion, or foreign particle damage, or thermal distortion from over-temperature conditions.
Maintenance Indicators
  • Visible leakage or weeping from the valve discharge when the system is at normal operating pressure (indicating it's not sealing properly).
  • Audible continuous or intermittent hissing or chattering noise from the valve during normal operation (suggests partial lift, instability, or internal damage).
Engineering Tips
  • Implement a regular testing and inspection schedule per ASME or manufacturer guidelines, including bench testing to verify set pressure and seat tightness, and internal inspection for corrosion, wear, or deposits.
  • Ensure proper installation with adequate drainage to prevent accumulation of moisture or debris, and use inlet/outlet isolation valves that allow for safe testing and maintenance without system shutdown.

Compliance & Manufacturing Standards

Reference Standards
ISO 4126-1: Safety devices for protection against excessive pressure - Safety valves ASME/ANSI B16.34: Valves - Flanged, Threaded, and Welding End DIN EN ISO 4126-1: Sicherheitseinrichtungen gegen unzulässigen Überdruck - Sicherheitsventile
Manufacturing Precision
  • Seat Bore Diameter: +/-0.02mm
  • Lift Height: +/-0.1mm
Quality Inspection
  • Hydrostatic Shell Test
  • Set Pressure and Blowdown Test

Factories Producing Safety Valve

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 materials are used in this safety valve construction?

This safety valve is constructed from durable stainless steel and brass components, providing corrosion resistance and long-term reliability in industrial environments.

How does the safety valve prevent equipment failure?

The valve automatically releases excess pressure from gas cylinders or generators when preset limits are exceeded, preventing catastrophic failure and ensuring operational safety.

What are the main components of this safety valve?

Key components include the valve body, spring, valve disc, and adjustment screw, allowing for precise pressure calibration and reliable performance in machinery applications.

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 Machinery and 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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