Pressure relief valve,is a kind of regulation and oontrol of intelligent piping pressure vaive by the media's own energy.200X valve for water supply,fre water supply and other industrial water supply system,guided by adjusting the vacuum valve,you can adjust the main vaive outlet pressure.Outlet pressure is not due to changes in the inlet pressure,inlet flow and change,safe and reliable to the outlet pressure maintained at a fixed value,and adjust the settings to achieve the purpose of decompression acoording to need.The decompression vaive precision,stable perfomance,safety and reliability,convenient installation and adjusment,long service life.
The main dimensions
DN | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 |
L | 150 | 160 | 180 | 200 | 203 | 216 | 241 | 292 | 330 | 356 | 495 | 622 | 622 | 787 | 914 | 978 |
H1 | 179 | 179 | 179 | 210 | 210 | 215 | 245 | 305 | 365 | 415 | 510 | 560 | 560 | 696 | 735 | 677 |
H | 342 | 342 | 342 | 395 | 395 | 406 | 430 | 510 | 560 | 585 | 675 | 730 | 760 | 840 | 910 | 1027 |
Pressure relief valve: Complete Guide for Industrial Applications
The pressure relief valve is a vital safety component designed to protect pipelines, vessels, and industrial systems from overpressure scenarios. By automatically venting excess pressure when it exceeds a preset limit, it prevents equipment damage, system failures, and potential safety hazards.
Widely used in oil and gas, chemical processing, water treatment, HVAC, and power generation industries, pressure relief valves (PRVs) ensure reliable, long-term performance under demanding conditions. Available in stainless steel, carbon steel, and bronze, they accommodate various media, including steam, gases, and liquids.
This guide covers installation, warranty policy, transport requirements, and product advantages, providing a comprehensive resource for engineers, operators, and procurement teams.
Automatic Pressure Protection: Opens precisely when pressure exceeds the set limit.
Durable Construction: Resistant to corrosion, high temperatures, and chemical exposure.
Wide Application Range: Suitable for liquids, gases, and steam in industrial processes.
Adjustable and Calibrated: Ensures accurate pressure relief and system safety.
Low Maintenance: Reliable operation with minimal servicing requirements.
Proper installation is essential to ensure performance and safety.
| Item | Action |
|---|---|
| Valve Type | Verify model, size, pressure rating, and material compatibility |
| System Condition | Ensure pipeline is depressurized and clean |
| Orientation | Confirm correct installation direction per flow marking |
| Accessories | Check gaskets, bolts, and any supplied mounting hardware |
| Step | Description |
|---|---|
| Step 1 | Position the valve according to system flow direction |
| Step 2 | Install using flanged, threaded, or welded connections as specified |
| Step 3 | Tighten bolts evenly in a cross pattern to avoid misalignment |
| Step 4 | Connect discharge piping to a safe location to guide vented media |
| Step 5 | Adjust pressure setting according to system requirements |
| Step 6 | Slowly pressurize the system and check for leaks and proper operation |
Installation Tips:
Avoid excessive torque on connections to prevent damage.
Ensure accessibility for maintenance and inspection.
Use appropriate gaskets and sealing materials to match media type and temperature.
A reliable warranty policy ensures peace of mind for customers and supports long-term operation.
| Warranty Aspect | Details |
|---|---|
| Coverage | Manufacturing defects, material failures, and calibration errors |
| Duration | Typically 12–24 months depending on model and application |
| Exclusions | Damage due to misuse, improper installation, or unauthorized modification |
| Claim Process | Contact authorized distributor or manufacturer, provide purchase info and defect description |
| Replacement or Repair | Manufacturer provides repair, recalibration, or replacement as needed |
Best Practices:
Register your valve upon purchase to activate the warranty.
Maintain records of installation, pressure settings, and maintenance.
Avoid unauthorized repairs to prevent warranty voidance.
Proper transportation prevents damage during transit and ensures the valve arrives ready for installation.
| Transport Condition | Requirement |
|---|---|
| Packaging | Original manufacturer packaging with protective padding |
| Orientation | Store upright to protect internal components |
| Environmental Protection | Keep away from moisture, dust, and corrosive environments |
| Handling | Avoid heavy impacts or dropping during loading/unloading |
| Temperature Range | Store within -10°C to 50°C unless otherwise specified |
Transport Tips:
Use pallets or crates for large valves.
Include clear handling instructions on packages.
Inspect valves upon arrival for damage before installation.
Pressure relief valves are critical for system safety, preventing overpressure incidents that can cause equipment failure or personal injury.
Calibrated valves provide exact pressure relief, ensuring consistent system operation and reducing downtime.
Suitable for steam, air, gas, water, and chemical media.
Available in a range of sizes, pressure ratings, and materials.
Corrosion-resistant materials and robust design provide long service life.
Low maintenance requirements reduce operational costs.
Compatible with automated monitoring and control systems for smart industrial applications.
Supports emergency venting and system pressure management efficiently.
| Specification | Typical Range / Details |
|---|---|
| Valve Type | Spring-loaded, pilot-operated, or balanced |
| Size Range | DN15 – DN500 mm |
| Pressure Rating | PN10 – PN100, Class 150 – 600 |
| Body Material | Stainless steel, carbon steel, bronze |
| Seal Material | PTFE, NBR, EPDM, or metal seats |
| End Connections | Flanged, threaded, welded |
| Temperature Range | -40°C to 400°C depending on material |
| Applicable Media | Steam, air, gases, water, chemicals |
| Actuation | Manual, automatic, or remote-controlled |
| Problem | Possible Cause | Recommended Solution |
|---|---|---|
| Leakage at seat | Worn or damaged seat | Replace seat or recalibrate valve |
| Valve does not open | Pressure below set threshold | Verify pressure and system settings |
| Valve chatter | Sudden pressure surges or pulsation | Install damping or adjust set pressure |
| Corrosion | Aggressive media or environmental factors | Upgrade material or apply protective coating |
| Stiff operation | Debris or mechanical blockage | Clean internals and lubricate moving parts |
The pressure relief valve is an essential safety component for industrial, commercial, and municipal systems. By following proper installation, transportation, and maintenance guidelines, users can ensure reliable operation, system protection, and extended valve life.
With durable construction, precise calibration, and versatile applications, pressure relief valves provide critical protection against overpressure incidents, safeguard equipment, and maintain continuous and efficient industrial operations.
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