Pressure Relief Rupture Disc
Product Model: ZD-025 (Heavy-Duty Industrial)
Material: Carbon Steel Holders (thickened design) with 321 or 316 Stainless Steel membrane.
Key Feature: Robust construction for long service life in harsh plant environments (vibration, weather, incidental impact).
Pressure Range: 2 barg to 40 barg.
Coating: Holders feature a durable industrial paint system (epoxy or polyurethane).
Typical Use: General plant air systems, cooling water headers, utility steam lines, mining equipment, and outdoor installations.
Overview
Across general industry, countless applications require dependable overpressure protection without exotic materials or extreme specifications—but with a focus on durability. This heavy-duty forward-acting disc is built to last. It features a thicker, robust holder design to withstand plant vibration and occasional knocks. The corrosion-resistant membrane provides reliable bursting, while the tough painted finish protects against weather and atmospheric corrosion. It is the workhorse safety device for utilities, supporting plants, and general manufacturing.
Features & Benefits
Ruggedized Holder Design: More material in the holder casting or forging resists deformation and damage during handling and service.
Durable Protective Coating: A high-quality, multi-layer paint system protects against rust and UV degradation in outdoor or humid environments.
Reliable & Cost-Effective: Offers an excellent balance of performance, longevity, and price for non-specialized services.
Wide Availability: Common sizes and pressures are stock items for quick replacement during maintenance.
How It Works
This is a classic, no-frills forward-acting rupture disc. Its value lies in its physical robustness and environmental resistance. When overpressure occurs, the stainless steel dome ruptures cleanly along its scores, providing the required relief. Its sturdy construction ensures it remains securely in place and leak-tight until that moment.
Specifications (Descriptive)
Covers the most widely used sizes: DN25, DN40, DN50, DN80, DN100, DN150. Standard burst pressures include 4, 6, 8, 10, 16, 25 barg. Holders are carbon steel, with a minimum thickness above standard. The standard paint is an epoxy primer with polyurethane topcoat. Bursting membranes are 321 or 316 stainless steel for general corrosion resistance. Gaskets are graphite or reinforced PTFE for broad chemical compatibility with common utilities.
Q&A
Q: Is this suitable for outdoor installation?
A: Yes, the durable paint system is specifically chosen for weather resistance. For extremely corrosive atmospheres (e.g., near the ocean, chemical plants), consider stainless steel holders or a more specialized coating.
Q: Can it handle wet, oily plant air?
A: Yes. The 316 stainless steel membrane is resistant to the mild corrosion from condensed moisture and oil vapors typically found in plant air systems. The graphite gasket is also compatible.
Q: What's the main difference between this and the Economy Series (ZD-017)?
A: The Heavy-Duty (ZD-025) features a physically more robust holder and a higher-quality, more durable paint system, making it better suited for permanent outdoor installations or areas with higher physical abuse potential. The Economy Series (ZD-017) is a lighter-duty, cost-optimized version best for protected indoor applications.
About ZD Safety
We build products for the real world. Our heavy-duty industrial discs are engineered to provide years of trouble-free service in the demanding conditions of a working plant, ensuring safety is maintained with minimal fuss and maintenance.
