PN420 High Pressure Chiller Safety Relief Valve - Threaded & Flanged Connection

Product Summary

Our PN420 High-Pressure Safety Relief Valve is specifically engineered for industrial chillers and refrigeration systems. Designed to handle extreme pressures up to 42MPa (PN420), it ensures the ultimate safety of your equipment by providing precise pressure relief for media like Ammonia (NH3), Propylene, and various refrigerants. With versatile connection options—including internal thread, external thread, and flange—this valve offers seamless integration into any high-pressure piping system. Operating reliably between -40°C and 150°C, it is the ideal choice for heavy-duty industrial cooling applications.

Specifications Table

Product Features

Ultra-High Pressure Rating

• Rated for PN420 (42MPa), suitable for the most demanding industrial high-pressure environments.

Versatile Connectivity

• Supports internal/external threads and flanged connections to meet diverse installation requirements.

Low-Temperature Resilience

• Optimized for refrigeration, maintaining perfect sealing and sensitivity at -40°C.

Corrosion Resistant

• Built with high-grade LCB/304 materials to withstand aggressive refrigerants like Ammonia.

Precise Set Pressure

• Features a high-sensitivity spring mechanism for accurate and repeatable pressure relief.

Application Scenarios

Industrial Chillers

• Overpressure protection for large-scale industrial water and oil chillers.

Refrigeration Plants

• Vital safety component for ammonia-based cold storage and chemical cooling processes.

High-Pressure Gas Systems

• Suitable for Propylene and other high-pressure gas storage and transport piping.

Advantages

Safety Assurance

• Fully compliant with international pressure vessel standards, reducing the risk of equipment failure.

Long Service Life

• Durable material selection and robust internal structure ensure minimal maintenance and long-term reliability.

One-Stop Solution

• Multiple connection types eliminate the need for additional adapters, simplifying your supply chain.

FAQ (Frequently Asked Questions)

Q: Can this valve be used for Ammonia systems?

A: Yes, the material and sealing (PTFE/LCB) are specifically optimized for Ammonia and other aggressive refrigerants.

Q: Is the set pressure adjustable?

A: Yes, the set pressure can be factory-preset or adjusted within a specific range according to your requirements.

Q: What is the lead time for PN420 flanged versions?

A: Standard models are available in stock; custom flanged versions typically ship within 10-15 business days.

Supplementary Document（Click to download）
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