Silo overfill protection valves

When abnormal pressure threatens your silo’s integrity, reliable pressure relief becomes critical. Designed for instant reaction, these spring-loaded valves ensure controlled venting, safeguarding your operations seamlessly.

The Spring-Loaded Pressure Relief Valves VCP from WAMGROUP are engineered to provide critical safety regulation and pressure balancing in silos. They feature a unique design with a cylindrical casing and disc-shaped inner lid controlled by spring rods, ensuring efficient venting and protection against overpressure or vacuum conditions. Ideal for diverse applications like ready-mix concrete and food processing, these valves operate continuously, manually balancing pressure to protect structural integrity. With a flow rate of up to 13,000 m³/h, they are available in painted carbon steel or 304 stainless steel. Notably, they comply with European Regulation (EC) No. 1935/2004 for food industry applications, offer ATEX-certified options, and integrate mechanical setups for inductive sensor signaling. Easy fitment and quick maintenance make them a reliable choice for industries ranging from construction to chemicals, with customization available for specific operational needs.

Benefits

  • Protects silo integrity by preventing structural damage from pressure imbalances.
  • Reduces installation time with its lightweight, easy-to-fit design.
  • Minimizes maintenance downtime through straightforward access for quick servicing.
  • Enhances compliance in food applications with options meeting European standards.
  • Supports safer operations with optional ATEX certification for explosive environments.
Applications
Sugar processing,Asphalt mixing,Ready-mix concrete production,Rubber processing,Drymix building materials,Animal feed milling,Beverage processing,Plastics processing,Chocolate processing,Spices,Paint and varnish processing,Cement and minerals processing,Cocoa,Coffee processing,Convenience food,Detergent processing,Precast concrete production,Bakeries,Brewery,Fertilizer processing
End products
Bread,Plastic granules,Mineral aggregates,Npk fertilizers,Animal feed pellets,Acrylic paints,Rubber tires,Beer,Cement blocks,Spice blends,Cocoa powder,Coffee beans,Varnishes,Juices,Granulated sugar,Laundry detergents,Instant noodles,Precast concrete panels,Chocolate bars,Asphalt mixtures,Ready-mix concrete,Drymix mortar
Steps before
Bin,Silo Manufacturing,Lime Dosing,Mechanical,Pneumatic Conveying,Concrete Production,Animal Feed Milling,Paint and Varnish Processing,Plastics Processing,Flour Milling,DryMix Processing,Pasta Processing,Biscuit Processing
Steps after
Silo Safety System,Silo Venting,Dust Filtration,Pressure Monitoring,Level Monitoring,Silo Integrity Check,Inductive Signalling
Input ingredients
air,suction pressure,normal air pressure
Output ingredients
excess pressure,relieved air
Flow rate
up to 13,000 m³/h (7,650 cfm)
Material
Painted carbon steel or 304 stainless steel
Maximum Negative Pressure
-0.005 bar (-0.07 psi)
Maximum Excess Pressure
0.05 bar (0.72 psi)
Design
Lightweight and compact
Automation level
Manual / PLC / SCADA
Batch vs. continuous operation
Batch / Inline Continuous
CIP/SIP
CIP 121°C / SIP 135°C
Cleaning method
CIP / Manual
Energy efficiency
0.5–2 kWh/kg moisture
Abrasion resistance
Suitable for abrasive materials
Biological compatibility
Compliant with food industry standards
Cleanability
Easy to clean design
Corrosive resistance (e.g. acids)
Stainless steel construction for corrosion resistance
Density/particle size
Designed for various bulk materials
Compact footprint
Lightweight design and reduced overall dimensions
Discharge method
Connected with a spigot welded on the silo roof
Material
Painted carbon steel or 304 stainless steel casing
Weather Protection
Stainless steel weather protection cover
Valve Mechanism
Helical springs with disc shape inner steel lid
Material Type
Painted carbon steel or 304 stainless steel
Size Options
Two sizes available
Sensor Option
Inductive sensors
Settings Adjustment
Optionally different settings available
Certification Options
ATEX-certified version
Industry Compliance
Compliance with European Regulation (EC) No. 1935/2004
Weather Protection
Stainless steel weather protection cover
Market info
WAMGROUP is known for its expertise in manufacturing bulk material handling and processing equipment, including screw conveyors, dust collectors, and valve systems, with a strong reputation for innovation, quality, and global market presence.