The RFZ Series Gas Safety Relief Valve is a high-precision overpressure protection device specifically engineered for the downstream sections of gas pipeline transmission and distribution systems. Utilizing a sophisticated spring-loaded regulation structure, it provides critical safety relief for pressure regulators in middle and downstream networks, ensuring system integrity by preventing dangerous pressure buildup in low to medium pressure pipe networks.
Designed for versatility and reliability, the RFZ valve is compatible with natural gas, coal gas, liquefied petroleum gas (LPG), and other non-corrosive gases. Its innovative design features a large diaphragm connection area and a slip-increasing continuous adjustment method, which significantly enhances response sensitivity and ensures rapid, accurate action to safeguard industrial and urban gas infrastructure.
Detailed Parameters
| Set Pressure (P1) | 1.5-30KPa, 30KPa-0.4MPa | Discharge Pressure | ≤ 1.05Pf |
|---|---|---|---|
| Reseating Pressure | ≥ 0.9Pf | Opening Height | 1/4d (d = flow diameter) |
| Working Temp. | -20℃ ~ +60℃ | Applicable Medium | Natural gas, coal gas, LPG |
| Series Specs | DN20, DN25, DN40, DN50 | Connection Sizes | G3/4", G1", G1 1/2", G2" |
| Compliance Std. | CJ/T335-2010 | Structure Type | Direct-acting Spring Loaded |
Key Advantages
Rapid Response
Direct spring action ensures sensitive triggering and quick response times to prevent overpressure accidents.
Extended Service Life
Built with high-durability materials and stable performance for a long working life with minimal wear.
High Precision
Strict adherence to CJ/T335-2010 standards ensures exceptional regulation accuracy and stable reseating.
Online Adjustment
Allows for convenient online regulation and automatic reseating after repeated jumps without system shutdown.
Compact Design
Equal-diameter discharging and a compact structure facilitate easy installation in tight pipeline spaces.
Low Maintenance
Simple design requires few spare parts and significantly reduces maintenance man-hours.
Product Gallery
Management Platforms
Pressure Control
Precision management of set pressures from 1.5KPa up to 0.4MPa for diverse gas networks.
Flow Optimization
Optimized discharge paths (DN20-DN50) to ensure efficient gas release during overpressure.
Safety Monitoring
Continuous protection against regulator failure, preventing downstream equipment rupture.
Seal Integrity
Advanced external sealing prevents leaks, ensuring safe operation in urban environments.
Asset Lifecycle
Reduced replacement frequency due to high durability and online repair capabilities.
Standard Compliance
Full alignment with industrial safety codes for gas cut-off and relief valve operations.
Investment Return Comparison
| Feature | Standard Relief Valves | RFZ Series Valve |
|---|---|---|
| Response Time | Moderate | Ultra-Fast (Direct Action) |
| Maintenance Cost | High (Frequent Parts) | Low (Minimal Spares) |
| Adjustment | Offline Manual | Online Real-time |
| Installation Space | Bulky | Compact/Equal-Diameter |
| Safety Rating | Basic | High (CJ/T335-2010) |
Frequently Asked Questions
Q: What are the primary types of industrial relief valves?
The three primary types are direct-acting relief valves (simple and fast), pilot-operated relief valves (high accuracy for high flows), and balanced-piston relief valves (stable against back pressure).
Q: Is a safety valve mandatory for all gas systems?
While residential systems often have built-in protection, commercial and industrial systems involving pressurized tanks or high-pressure pipelines absolutely require dedicated relief valves to prevent explosions.
Q: How should an RFZ gas safety relief valve be replaced?
Replacement requires system isolation, full depressurization, verification of the new valve's pressure rating, professional installation following torque guidelines, and a comprehensive leak test.
Q: Which gases are compatible with the RFZ series?
The RFZ series is designed for non-corrosive gases, including natural gas, coal gas, and liquefied petroleum gas (LPG).
Q: What is the benefit of the "equal-diameter discharging" structure?
It allows the valve to fit seamlessly into existing piping without requiring complex adapters, making installation faster and reducing potential leak points.
Q: Can the RFZ valve be adjusted while the system is running?
Yes, one of the key features of the RFZ series is that it can be adjusted online, allowing for calibration without interrupting the gas supply.
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