Structured Manufacturing Data (2026)

Safety Relief Valve

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Safety Relief 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 Relief Valve is characterized by the integration of Valve Body and Valve Disc. In industrial production environments, manufacturers listed on CNFX commonly emphasize Stainless Steel 316 construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A pressure relief device designed to automatically open and discharge fluid when pressure exceeds a predetermined set point to prevent equipment failure.

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Product Specifications

Technical details and manufacturing context for Safety Relief Valve

Definition
A critical safety component installed on the Deoxygenation Chamber that protects the vessel from overpressure conditions by automatically releasing excess pressure when internal pressure exceeds the valve's set pressure, preventing catastrophic failure and ensuring operational safety during deoxygenation processes.
Working Principle
The valve remains closed under normal operating pressure. When pressure exceeds the predetermined set point, the force on the valve disc overcomes the spring force, causing the valve to open and release fluid until pressure drops below the reseat pressure, at which point the spring force closes the valve.
Common Materials
Stainless Steel 316, Spring Steel, PTFE Seals
Technical Parameters
  • Inlet/Outlet connection size (mm) Per Request
Components / BOM
  • Valve Body
    Main housing containing fluid flow path
    Material: Stainless Steel 316
  • Valve Disc Part
    Sealing element that opens/closes flow path
    Material: Stainless Steel 316
  • Spring Part
    Provides closing force to keep valve sealed
    Material: Spring Steel
  • Adjusting Screw Part
    Allows adjustment of spring compression to set opening pressure
    Material: Stainless Steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Safety Relief Valve.

stainless steel safety relief valve pressure relief valve for machinery PTFE seal safety valve spring operated relief valve industrial pressure relief device

Applied To / Applications

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

Deoxygenation Chamber
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Vacuum/Pressure System
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Gas Panel
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CO₂ Supply System
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Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 10,000 psi (689 bar)
flow rate: 0.1 to 10,000 GPM (0.38 to 37,850 L/min)
temperature: -20°C to 400°C
slurry concentration: Not recommended for slurries >5% solids by volume
Media Compatibility
✓ Steam systems ✓ Compressed air/gas ✓ Hydrocarbon liquids
Unsuitable: Highly corrosive acids (e.g., hydrochloric acid, sulfuric acid)
Sizing Data Required
  • Required relieving capacity (mass flow rate)
  • Set pressure and overpressure allowance
  • Fluid properties (specific gravity, compressibility)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Sticking/Seizing
Cause: Corrosion, fouling, or debris accumulation preventing proper disc movement, often due to process contamination, improper material selection, or inadequate maintenance intervals.
Leakage (In-Service or External)
Cause: Worn or damaged seating surfaces from erosion/corrosion, improper installation torque, thermal cycling causing distortion, or foreign material preventing full closure.
Maintenance Indicators
  • Visible leakage or weeping from valve discharge during normal operation
  • Audible hissing or continuous flow noise when valve should be closed
Engineering Tips
  • Implement regular bench testing and inspection per ASME/API standards to verify set pressure, seat tightness, and functional integrity before reinstallation.
  • Ensure proper process isolation and upstream filtration to prevent contamination, and specify corrosion-resistant materials compatible with service fluid and environmental conditions.

Compliance & Manufacturing Standards

Reference Standards
ISO 4126-1: Safety devices for protection against excessive pressure ASME/ANSI B31.3: Process Piping DIN EN ISO 4126-1: Safety valves - Part 1: General requirements
Manufacturing Precision
  • Bore diameter: +/-0.02mm
  • Seat flatness: 0.05mm maximum deviation
Quality Inspection
  • Hydrostatic pressure test
  • Set pressure verification test

Factories Producing Safety Relief 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 relief valve?

This valve is constructed with Stainless Steel 316 for the body, spring steel for the spring mechanism, and PTFE (Teflon) seals for reliable pressure containment and corrosion resistance.

How does the safety relief valve prevent equipment failure?

The valve automatically opens when pressure exceeds the predetermined set point, discharging fluid to reduce pressure. This prevents overpressure conditions that could damage machinery or cause safety hazards.

What are the main components of this relief valve?

Key components include the adjusting screw for pressure setting, spring mechanism, valve body (Stainless Steel 316), and valve disc. These work together to provide precise pressure relief.

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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