Cosben

Safe Venting PRV (Pressure Relief Valve)

Set pressure is adjustable, venting is automatic, and nobody has to climb up and reset anything afterwards.

Range+600 to +1050 mmWg

Negative set range -120 to -50 mmWg

after venting After venting No reset

Adjustable set pressure

01

Does

Releases pressure and relieves vacuum, automatically

02

Positive set range

+600 mmWg to +1050 mmWg

03

Negative set range

-120 mmWg to -50 mmWg

04

After venting

No manual reset required

It Vents, Then Goes Back to Work on Its Own

Cosben Engineering’s safe venting PRV is a critical safety component designed to protect silos from pressure-related damage during loading and unloading operations. In bulk material handling systems, uncontrolled pressure or vacuum conditions can lead to structural risks or operational hazards. This is where a reliable silo pressure relief valve becomes essential.

Also known as a PRV valve or breather valve, the system helps balance internal pressure by allowing air to move in or out based on process conditions. Acting as both a vacuum relief valve and silo vent valve, it ensures stable pressure conditions inside the silo and safeguards the equipment.

With a focus on safe venting and ease of operation, this valve is designed to perform reliably without frequent intervention, making it suitable for continuous industrial use.

At a Glance

Does

Releases pressure and relieves vacuum, automatically

Positive set range

+600 mmWg to +1050 mmWg

Negative set range

-120 mmWg to -50 mmWg

After venting

No manual reset required

Key Features & Benefits

Four points, and the one that saves a trip to the silo roof is the second.

01

Safe Venting Operation

Designed to release excess pressure and maintain safe internal conditions.

02

No Reset Required

Operates without the need for manual resetting after venting.

03

Adjustable Set Pressure

Allows easy adjustment of pressure settings based on application needs.

04

Maintenance Friendly

Simple design supports easy inspection and long-term usability.

Next Step

Talk to Our Engineers

Share your material, duty and layout and we will size it for your process.

Technical Specifications

Baseline configuration. Every unit is finalized to the material and duty of your process.

Model Safe Venting PRV (Pressure Relief Valve)
Set Pressure, Positive
+600 mmWg to +1050 mmWg
Set Pressure, Negative
-120 mmWg to -50 mmWg

Related Equipment

Often specified alongside this equipment to move and filter material downstream.

screw conveyor (1)

Screw Conveyor

Transfers dumped material onward from the hopper outlet to the next process stage.
bin-activator2

Bin Activator

Vibratory flow aid that prevents arching, rat-holing and material build-up at the hopper outlet below the dumping station.
Butterfly Valve

Butterfly Valve

Manual or pneumatic flow-control valve for isolating and regulating discharge from the hopper below the station.
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