Vigiflap Explosion Isolation Valves

Name: Vigiflap Explosion Isolation Valves
Brand: Sledge Tech

Overview

Vigiflap Explosion Isolation Valves

The Vigiflap is an explosion isolation valve designed to prevent propagation of overpressure or flame front caused by an explosion downstream in vessels such as dust collectors, cyclones, and filters.

The valve is held open either by air flow or proprietary locking mechanism. As a result, the Vigiflap valve can be used as an explosion isolation device for both the inlet and outlet of a vessel.

The Vigiflap Explosion Isolation Valve complies with NFPA guidelines and is an ATEX Certified device for the containment of explosion.

Specifications

Features, Benefits & Technical Specs

Body: Painted steel
Diameters: ø6” to ø54” / ø160 mm to ø1350 mm
Gasket: EPDM (Silicone FDA 356°F/180°C option)
Pressure drop: Lower pressure drop with round domed flap

Body: Galvanized or Stainless steel
Frame silicone FDA: 356ºF/180 ºC
Dust level sensor to prevent dust accumulation
Connection box installed on the body, according to the ATEX zone (opposite side of the locking mechanism)

FAQ

Common Questions

What is spark detection and extinguishing, and do I need it?

A spark detection and extinguishing system (like our Raptor line) continuously monitors ductwork for sparks or embers generated upstream by grinding, cutting, or other hot processes, and automatically extinguishes them with a water mist before they reach a filter or collector where they could ignite accumulated dust. It's typically recommended wherever a process both generates sparks and feeds a dry dust collection system.

What’s the difference between an explosion vent and an explosion isolation valve?

An explosion vent (like our Vigilex domed or flameless vent panels) is designed to relieve pressure safely to the outside of a vessel if a dust explosion occurs inside it. An explosion isolation valve (like our Vigiflap valves) is designed to stop flame and pressure from traveling through ductwork from one piece of equipment to another, preventing a secondary explosion elsewhere in the system. Most combustible-dust systems use both as part of a layered protection strategy.