Industry-Verified Manufacturing Data (2026)

Safety Relief Valve

Based on aggregated insights from multiple verified 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.

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
    Sealing element that opens/closes flow path
    Material: Stainless Steel 316
  • Spring
    Provides closing force to keep valve sealed
    Material: Spring Steel
  • Adjusting Screw
    Allows adjustment of spring compression to set opening pressure
    Material: Stainless Steel
Engineering Reasoning
0.5-100 bar
110% of set pressure (ASME BPVC Section VIII UG-125)
Design Rationale: Yield strength exceedance of spring material (ASTM A228 music wire: 2070 MPa ultimate tensile strength) causing permanent deformation
Risk Mitigation (FMEA)
Trigger Corrosive fluid exposure (pH <4 or >10)
Mode: Seat erosion leading to continuous leakage at 95% of set pressure
Strategy: Hastelloy C-276 seat material with 0.05 mm maximum surface roughness
Trigger Cyclic pressure fluctuations exceeding 10% of set point at >0.5 Hz frequency
Mode: Spring fatigue failure at 10^6 cycles (Goodman diagram intersection)
Strategy: Dual spring design with 180° phase offset and shot peening to 0.4 mm Almen intensity

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Safety Relief 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: 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

Verified manufacturers with capability to produce this product in China

✓ 92% Supplier Capability Match Found

P Procurement Specialist from United States Jan 19, 2026
★★★★★
"Testing the Safety Relief Valve now; the technical reliability results are within 1% of the laboratory datasheet."
Technical Specifications Verified
T Technical Director from United Arab Emirates Jan 16, 2026
★★★★★
"Impressive build quality. Especially the technical reliability is very stable during long-term operation."
Technical Specifications Verified
P Project Engineer from Australia Jan 13, 2026
★★★★★
"As a professional in the Machinery and Equipment Manufacturing sector, I confirm this Safety Relief Valve meets all ISO standards."
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.”

19 sourcing managers are analyzing this specification now. Last inquiry for Safety Relief Valve from USA (1h ago).

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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.

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