Pressure Relief Valve
Model-AD-500 PR
Overview
A Pressure Relief Valve is a hydraulically operated, self-actuated control valve designed to automatically relieve excess pressure from a pipeline or system when the pressure exceeds a preset safe limit.
The valve protects pipelines, pumps, fittings, and other equipment from over-pressure conditions, ensuring safe and reliable system operation.
Key Features
- ✓Automatic over-pressure protection
- ✓Fast response to pressure rise
- ✓No external power required
- ✓Smooth and controlled closing
- ✓Prevents pipe bursts and failures
Working Principle
The valve operates automatically using line pressure, without the need for external power.
- ✓When system pressure rises above the preset relief value, the valve opens rapidly to discharge excess pressure to atmosphere, tank, or return line.
- ✓Once the pressure drops back to the safe level, the valve closes smoothly, preventing pressure shock and water hammer.
- ✓The valve continuously responds to pressure fluctuations, providing fast and accurate over-pressure protection.
Key Functions
- ✓Relieves excess system pressure
- ✓Protects pipelines and equipment from over-pressure
- ✓Prevents pipe bursts and joint failures
- ✓Reduces risk of water hammer
- ✓Ensures safe and stable operation
Main Components
- ✓Main Control Valve Body (Diaphragm Type)
- ✓Pressure Relief Pilot Valve
- ✓Control Tubing and Fittings
- ✓Pilot Line Strainer
Applications
Pumping Stations
Pumping stations and discharge lines
Water Systems
Water transmission and distribution systems
Booster Pumps
Booster pump installations
Industrial Pipelines
Industrial water pipelines
Fire Protection
Fire protection systems
High-Pressure Zones
High-pressure zones and surge-prone networks
Advantages
- ✓Fully automatic operation
- ✓No external power required
- ✓Fast response to pressure rise
- ✓Smooth and controlled closing
- ✓Long service life with minimal maintenance
- ✓Easy pressure setting and adjustment
Typical Specifications
Customizable to meet specific requirements
- ✓Size Range: DN 50 to DN 300 (and above on request)
- ✓Pressure Rating: PN 10 / PN 16 / PN 25
- ✓Body Material: Ductile Iron / Cast Steel
- ✓Trim Material: Stainless Steel
- ✓Coating: Fusion Bonded Epoxy (FBE)
- ✓End Connections: Flanged EN / ISO / ANSI
- ✓Operating Medium: Water
Why Choose Our Pressure Relief Valve?
Our Pressure Relief Valves are engineered to provide reliable over-pressure protection and long-term performance under demanding operating conditions. Each valve is factory tested to ensure accurate pressure response, leak-free operation, and compliance with international standards.