ProFlap Passive Isolation
Explosion Valve

ProFlap Passive Isolation Explosion Valve from FENWAL Protection Systems

ProFlap Passive Isolation Explosion Valve from FENWAL® Protection Systems: The ProFlap Plus Valve is an effective, self-actuating device providing inlet explosion isolation to protected vessels handling combustible dust. The ProFlap Passive Isolation Explosion Valve is designed to meet the requirements of OSHA Combustible Dust Directive.

More about the ProFlap Plus
The ProFlap Plus backpressure flap valve has a carbon steel body incorporating a stainless steel flap. The valve is designed to withstand pressures up to the maximum reduced pressure (Pred, max) listed in the products specifications.

During operation, the downstream mounted backpressure flap is kept open by means of the airflow. At stand-still, the flap closes due to its own weight. When the system is started, opening of the flap is damped by a damping element.

In the event of an explosion within a protected system, the flap closes due to the pressure front propagating within the duct and prevents propagation of the flame and the pressure to upstream equipment. Interconnected equipment is protected against the explosion effects from propagating deflagrations.

Advantage of the ProFlap Passive Isolation Explosion Valve
    • Passive design, no triggering sensors or controller necessary
    • Applicable for organic and inorganic dust with Kst up to 300 bar/m/s
    • Low-cost explosion isolation option
    • Monitors its operational conditions via integrated sensors, thus allowing longer
      maintenance intervals
    • Rugged, durable design requires minimal maintenance
    • Easy access for inspection via door
    • Short mounting distances
    • ATX certified according to the latest standard, prEN 15089

Special Note:
ProFlap Plus isolation valves are not designed for applications requiring full explosion pressure confinement. They are designed to withstand pressures up to the maximum reduced pressure listed in the product’s data sheet (0.5bar or 0.4basr). It is important that you know the Pred value of the protected vessel before specifying ProFlap Plus valves.

About FENWAL Protection Systems
FENWAL Protection Systems is the world leading authority on explosion protection. Their 80,000 square foot Combustion Research Center is located outside of Boston that is fully-equipped and fully-staffed by scientists dedicated to the ongoing study of explosions. The center offers industry a complete range of testing services from basic explosibility tests to full-scale application mockups.

Since 1950, FENWAL Protection Systems has installed over 8,000 explosion protection systems worldwide, that detects and suppresses over 200 explosions per year. FENWAL Protection Systems is the world's leading authority on explosion protection and part of the UTC Fire & Security family, the foremost international provider of quality systems and services. FENWAL is a registered trademark of Kidde-FENWAL