Plant Pressure Relief Valve-7"

Plant Pressure Relief Valve-7"

This is a silo protection safety valve, commonly used on cement, fly ash, or dust collector silos in concrete batch plants. During pneumatic filling or due to temperature changes, pressure inside the silo can build to dangerous levels or drop into a vacuum; this valve automatically vents excess pressure or allows air to enter to equalize a vacuum, preventing silo roof blow-off or wall collapse. Its dual-action design provides a critical safety function, acting as a last resort if a primary dust collector system fails or becomes clogged. This 7-inch model corresponds to the widely used WAM VCP273 series.

Key Features

• Dual-action design provides both over-pressure and vacuum (negative pressure) relief.
• Helical springs keep valve lids closed until preset pressure limits are exceeded.
• Includes a weather protection cover to ensure reliable outdoor operation.
• Lightweight design for easy installation on silo roofs.
• Carbon steel body with a central spring rod for negative pressure and three external spring rods for positive pressure.

Fits These Mixers

Vince Hagan, CMW, Con-E-Co, Erie Strayer, Stephens, Donaldson Torit. Fits any concrete batch plant silo or dust collector equipped with a 7-inch (168mm) mounting spigot for a pressure relief valve. Commonly found on equipment from manufacturers like Vince Hagan, Con-E-Co, and others who utilize WAM-style silo accessories.

All measurements ± standard manufacturing tolerance.

Product descriptions are drafted with automated tools and reviewed as time allows. While we work to keep them accurate, specifications and fitment should be confirmed with a Customer Service specialist at 800-745-3414 before purchase. Found an error? Let us know and we’ll fix it.