Industry-Verified Manufacturing Data (2026)

Safety Valve

Based on aggregated insights from multiple verified 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.

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
    Provides calibrated force to keep valve closed until set pressure is reached
    Material: Spring Steel
  • Valve Disc
    Sealing surface that opens to release pressure
    Material: Stainless Steel
  • Adjustment Screw
    Allows calibration of set pressure
    Material: Brass
Engineering Reasoning
0.5-150 bar
Spring compression exceeding Hooke's Law elastic limit at 1.5x design pressure (225 bar for 150 bar valve)
Design Rationale: Yield strength exceedance of ASTM A193 B7 spring steel (minimum 860 MPa) causing permanent set, preventing reseating at set pressure
Risk Mitigation (FMEA)
Trigger Corrosive gas exposure (e.g., H2S concentration >50 ppm)
Mode: Stress corrosion cracking in valve seat (316L stainless steel)
Strategy: Inconel 625 seat material with 0.02% maximum carbon content
Trigger Cyclic pressure loading at 85-100% of set pressure
Mode: High-cycle fatigue failure at spring coil root stress concentration
Strategy: Shot-peened spring surface with compressive residual stress >400 MPa

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Safety Valve.

Applied To / Applications

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

Industrial Ecosystem & Supply Chain DNA

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

Verified manufacturers with capability to produce this product in China

✓ 96% Supplier Capability Match Found

P Procurement Specialist from Australia Jan 03, 2026
★★★★★
"As a professional in the Machinery and Equipment Manufacturing sector, I confirm this Safety Valve meets all ISO standards."
Technical Specifications Verified
T Technical Director from Singapore Dec 31, 2025
★★★★★
"Standard OEM quality for Machinery and Equipment Manufacturing applications. The Safety Valve arrived with full certification."
Technical Specifications Verified
P Project Engineer from Germany Dec 28, 2025
★★★★★
"Great transparency on the Safety Valve 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.”

5 sourcing managers are analyzing this specification now. Last inquiry for Safety Valve from Turkey (30m ago).

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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.

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