DN350*500 High-Performance Steam Pressure Relief Valve

DN350*500 High-Performance Steam Pressure Relief Valve

Key Features & Benefits
Rapid & Tight Sealing: Achieves full closure at 89% of set pressure, minimizing steam loss and ensuring system integrity.
Optimized Flow Design: Large discharge capacity with a streamlined flow path for efficient pressure release.
Durable Performance: Engineered for stable operation at up to 300°C, guaranteeing long-term safety in demanding steam pipelines (DN350×500).
Leakage Reduction: Fast re-seating mechanism significantly decreases steam wastage, improving energy efficiency.
Ideal for Critical Applications
This valve is specially designed for high-pressure steam systems across industries requiring precision and reliability:

Thermal Power Generation
Petrochemical & Refining Processes
Food & Beverage (Sterilization & Processing)
Pharmaceutical Production
Heavy Industries: Steel & Non-Ferrous Metal Smelting

Product Overview
350×500 High-Capacity Steam Pressure Relief Valve
This high-performance steam pressure relief valve is specifically engineered for critical steam pipeline applications operating at up to 300°C. Designed with optimized flow path and robust construction, it ensures reliable overpressure protection, maximum discharge capacity, and tight shut-off performance, fully complying with industrial technical standards and meeting the rigorous requirements of high-demand steam systems. It is a heavy-duty safety solution engineered for critical, steam-intensive industrial applications. Its robust forged construction and high-flow design ensure reliable overpressure protection, safeguarding equipment and preventing costly downtime in power generation, chemical processing, and large-scale HVAC systems.

Key Features & Benefits
● Rapid & Tight Sealing: Achieves full closure at 89% of set pressure, minimizing steam loss and ensuring system integrity.
● Optimized Flow Path: Precision-designed internal structure maximizes discharge capacity while maintaining excellent tight shut-off performance, reducing unnecessary steam loss.
● Durable Performance: Engineered for stable operation at up to 300°C, guaranteeing long-term safety in demanding steam pipelines (DN350×500).
● Leakage Reduction: Fast re-seating mechanism significantly decreases steam wastage, improving energy efficiency.
● API/ASME: Complies with international industry standards, ensuring product reliability and interchangeability.
● Fast Re-seating Mechanism: High-response valve core design enables rapid re-seating after pressure relief, effectively preventing secondary steam leakage and stabilizing system pressure.
● Robust Construction: Adopts high-strength alloy materials for key components, withstanding long-term operation under high temperature (300°C) and high pressure (PN16-40) conditions, ensuring long service life and low maintenance cost.

Core Applications:
● Power Generation: Protects boilers and turbines from overpressure during load fluctuations, with rapid reseating enhancing energy efficiency.
● Chemical/Petrochemical Processing: Maintains stable pressure in reactors and heat exchangers handling corrosive steam mixtures, thanks to corrosion-resistant materials.
● Industrial Boiler Systems & HVAC: Ensures safety and efficiency in large facility heating/process steam systems, reducing leakage and maintenance costs.
● Oil & Gas Refineries: Provides reliable HPHT overpressure protection for steam-driven equipment like FCC units and compressors.
● Food & Beverage: Used in sterilization and pasteurization processes, offering precise pressure control and easy-sanitize 316L construction.

Main Technical Specifications

Model	Steam Pressure Relief Valve (Customizable)
Size	DN350×500
Nominal Pressure	PN16 - PN40
Maximum Operating Temperature	300°C
Applicable Medium	Saturated Steam,
Discharge Capacity	Customizable according to actual working conditions (provide detailed parameters for calculation)
Valve Body Material	WCB, WC6, WC9 (Optional according to temperature and pressure requirements)
Valve Core Material	Stellite Alloy
Sealing Material	Graphite, PTFE (High-temperature resistant type)
Standards Compliance	API 526, ASME Section VIII, BS 1562

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Technical Support & Documentation
We provide comprehensive technical support for professional customers, including:
● Detailed CAD Drawings (2D/3D)
● Material Test Reports (Mill Certificates)
● Third-Party Inspection Certificates (SGS/BV/Intertek)
● Flow Coefficient (Cv/Kv) Calculation Reports
● On-site Installation & Commissioning Guidance

Get Your Customized Steam Solution
Reach out to our engineering experts for technical support or tailored valve configurations.
Email: [email protected]
Tel: +86-21-69986139
Let our valves secure your safety — with precision you can trust.