Silo Level Indicator
Monitors material level as part of the silo filling arrangement.
Installation area · Silo wall or roofTechnical page & enquiry
Pressure Relief Valve
An eQUIP pressure relief valve is designed for cement silos, fly ash silos, lime silos and dry bulk powder storage systems. These valves are designed to help protect silos against excessive positive pressure and vacuum conditions that may occur during pneumatic filling, discharge or abnormal operating situations.
- Product code EQP-PRV
Final configuration and suitability require a technical review of your material and operating conditions.
Product overview
A pressure relief valve is installed on the silo roof as a safety component. During silo filling, air entering the silo must be vented correctly through the silo top filter. If venting is restricted or pressure rises beyond the allowed range, the valve opens to release excess pressure. In vacuum conditions, the valve can also help admit air into the silo to reduce negative pressure.
Unlike flow control valves, this silo safety valve is not used for material dosing or discharge regulation. Its main function is silo protection. It supports safer operation of cement silos and powder storage systems by acting as a mechanical safety device against overpressure and vacuum.
What It Does
A pressure relief valve helps protect a silo from excessive internal pressure or vacuum. It operates when the pressure difference inside the silo reaches the valve’s set range, allowing the silo to relieve pressure or equalize negative pressure.
In cement and powder storage applications, this is especially important during pneumatic filling, where large volumes of air enter the silo together with the material. The valve works together with the silo top filter and other silo safety equipment to support safe and controlled silo operation.
Key Benefits
- Helps protect silos against overpressure and vacuum
- Suitable for cement silos, fly ash silos, lime silos and powder storage systems
- Mechanical safety component for silo roof installation
- Supports safer pneumatic filling and discharge operation
- Helps reduce the risk of silo deformation caused by pressure imbalance
- Works together with silo top filters and level monitoring systems
- Compact design for top-mounted silo installation
- Suitable for dry bulk materials such as cement, fly ash, lime and mineral powders
- Service-friendly design for inspection and maintenance
- Configurable according to silo design and project requirements
Workshop & application
Product photographs
Where it is used
Applications
- Cement silo safety systems
- Fly ash silo protection
- Lime silo applications
- Dry bulk powder storage
- Concrete batching plants
- Cement terminals
- Dry mortar plants
- Silo filling systems
- Powder handling facilities
- Industrial bulk material storage systems
Documents & technical support
The general catalogue is public. Order-specific drawings and datasheets are available only through an authorized account.
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Technical Flexibility
The selection of a pressure relief valve depends on the silo design, operating pressure range, filling method, discharge conditions, material type, venting capacity and site requirements. eQUIP can supply configurations according to the silo system and safety requirements of the project.
For cement silos and dry powder storage systems, correct installation and regular inspection are important. The valve should remain clean, free to move and properly seated to ensure reliable response during pressure or vacuum events.
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Selection and quotation details
Provide the silo design pressure limits, required relief capacity, material, filling conditions and roof connection dimensions. The selected valve must match the complete silo system. See our silo filling and dust-control guide to distinguish normal venting from pressure protection.
Questions buyers ask
Questions buyers ask
FAQ
What is a pressure relief valve?
A pressure relief valve is a safety valve designed to help protect silos against excessive internal pressure or vacuum. It is commonly installed on the top of cement silos and powder storage silos.
Why is a pressure relief valve used on cement silos?
During pneumatic filling, air enters the silo together with cement or other powder materials. If the air cannot vent correctly, pressure may rise inside the silo. A pressure relief valve helps release excess pressure and supports safer silo operation.
Does a pressure relief valve also protect against vacuum?
Many silo pressure relief valves are designed to respond to both positive pressure and negative pressure conditions. Vacuum relief helps reduce the risk of silo deformation during discharge or abnormal operating conditions.
What is the difference between a pressure relief valve and a silo top filter?
A pressure relief valve is a safety device used to protect the silo from excessive pressure or vacuum. A silo top filter is used to filter dusty air during silo filling. These products have different functions and are often used together on silo systems.
Is this valve used for material flow control?
No. This device is not used for dosing or controlling material discharge. It is a silo safety component designed for pressure and vacuum protection.
Which materials can it be used with?
Pressure relief valves are commonly used on silos storing cement, fly ash, lime, mineral powders and similar dry bulk materials.
What affects pressure relief valve price?
The price depends on valve size, pressure and vacuum function, body material, connection flange, weather protection, surface treatment and project-specific silo requirements.
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