Isolation Flap Valves
IEP IsoFlap Isolation Flap Valve
IEP Technologies introduces the IsoFlap™M Isolation Flap Valve which is designed specifically to prevent explosion propagation in applications with combustible dust. The IsoFlap passive isolation valve does not require any triggers from sensors. It is designed to work purely on process air being delivered to the unit to discharge materials while the blade of the flap is held open. In the event of an explosion, the pressure front arriving from the process ducting will cause the blade of the IsoFlap™M to close, and then lock. Once locked, the IsoFlap™M provides protection from flames and pressure reaching the connected upstream equipment. Moreover, the IsoFlap-M provides integrated dust accumulations, and blade monitoring as required to meet industry standards such as OSHA, NFPA 654, NFPA 69.
Specifications
- Manufactured with a durable carbon steel valve body and a flap blade made of high-quality steel alloy.
- Designed to withstand high Pred, with specific limits listed in the specifications section to match a variety of conditions.
- Certified according to EN16447, ensuring compliance with established safety regulations.
- Engineered to maintain a low pressure drop, optimizing system performance and efficiency.
- Allows for short mounting distances and tested approval for up to two elbows between the IsoFlap and the downstream vessel.
- Provides easy access for inspection and maintenance, especially for valves larger than DN630, via a hinged cover with gas spring assistance.
- A cylindrical housing minimizes product buildup, and the internal bearing shaft ensures a leak-tight design.
- Proven resistant to corrosion with salt spray tests, maintaining longevity in harsh industrial conditions.
Common Applications
- Serves as a passive explosion isolation safeguard for dust collectors or dust collection systems that manage combustible particulates.
- Ideal for providing explosion isolation protection at the inlet of cyclones separators to prevent the backflow of flames.
- Applicable for a wide array of process equipment that handles combustible dust and requires additional safety measures.
- Complements industrial venting or flameless venting systems by securing interconnections between process vessels against explosion risks.
- Suitable for environmental safety compliance that needs to comply with OSHA Combustible Dust Directive and NFPA standards for explosion prevention.
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Non-Return Valve NRV Combo Safety Flap Valve
The Non-Return Valve NRV Combo Safety Valve, an essential protection in case of explosions in industrial environments, is an ATEX certified passive device in accordance with the standard EN 16447. This passive defence system is to prevent possible explosions going back through the suction pipe (while it may not prevent an explosion completely from happening, it does stop further damage to the other sections of process line).
Specifications
- Available in standard carbon steel with a RAL 3020 paint finish or in corrosion-resistant stainless steel AISI 304 or AISI 316 variants.
- The valves are fully welded at all union points, and their structure is fortified to endure substantial pressures.
- They come with flanges and counterflanges that are compatible with standard DIN 24154-RI, facilitating easy integration into existing systems.
- An efficient gasket provides a secure seal when the valve is in the closed position, ensuring containment and maintaining system integrity.
- Capable of functioning in temperature ranges from -20°C to +60°C, with a process flux type of pull flow and non-metallic dust handling.
- Fully compliant with ATEX class, these valves can safely operate in environments with a st = 325 bar*m/s and a maximum airspeed of 30 m/s.
- Designed to work in horizontal pipe configurations, with minimum and maximum installation distances provided to accommodate various setups.
Common Applications
- To prevent the reverse flow of flames and explosions in facilities of industrial dust collection systems such as woodwork shops, metal processing plants, and chemical processing factories.
- Protects against explosion risks where materials are transported through pneumatic conveying systems such as ducts and pipes, including plastics manufacturing, pharmaceuticals, and food processing industries.
- Integral to systems where explosion isolation is needed to preserve the integrity of environmental controls and suction and filtration units such as air filtration setups and central vacuum systems.
- Serves as a preventative measure in any industrial safety critical processes where combustible dust or fumes might pose a significant threat in the operational environment.
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CMC/Aircom SNR Safety Non Return Valves
The Safety Non Return (SNR) Valves from CMC/Aircom are explosion isolation valves designed to contain explosions in industrial suction lines and prevent further propagation downline. Available in sizes from 100mm to 900mm, these stainless steel/engineered plastic valves meet ATEX certification standards for reliability in stopping and isolating explosions.
Utilizing a lightweight yet high-strength flap mechanism, the SNR valves quickly react to the initial stages of an explosion event through sensitive detection of pressure changes. By slamming shut against extreme pressures surging up to 1 bar, they effectively block detonation waves from traveling farther down the connected piping. This minimizes secondary explosions and shock impact on equipment installed on the suction line.
Specifications
- The Safety Not Return Valves series comes in a diverse variety of sizes, ranging from 100mm to 900mm.
- The valves are made of carbon steel painted standard RAL 3020 or in stainless steel AISI 304 or AISI 316, ensuring their durability.
- They are fabricated to withstand a wide temperature range from -20°C to +60°C, providing unparalleled functionality across different environmental conditions.
- These valves are equipped with an anti-opening lock and can be supplied with accessories such as a Micro-switch, capacitive sensor, and a gasket in siliconcell based on demand.
- The product adheres to the ATEX class 2 standard and can function under high pressure– up to 0.5 bars.
- They can operate as part of systems with air speeds up to 30 m/s.
Common Applications
- These safety not return valves can be employed in situations involving non-metallic dust types.
- They can have prolific application in contexts where a substantial volume of dust or gases are being managed, ranging from 10 m³ to 60 m³.
- They come in handy in diverse industrial contexts where explosion safety in suction lines is a pre-requisite
- Rigorously explosion tested under demanding conditions, SNR valves have proven robust resilience for most extreme scenarios.
- Straightforward to integrate into new or existing pipeline runs with their flanged end connections, they provide a simple and dependable method of implementing the venting isolation critical for safety.
- Protecting plant assets while ensuring regulatory compliance, the CMC/Aircom SNR valves are durable and versatile solutions tailored for industrial explosion prevention.
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CMC/Aircom NRV Metal ATEX Certified Safety Non-Return Valves
Aircom’s NRV Metal Safety Non-Return Valves offer a reliable passive protection system, designed to prevent the propagation of explosions within suction lines. These valves, ATEX certified under EN 16447, serve as an essential safeguard against explosions in suction plants by halting explosive effects within the suction line. Manufactured from either standard painted carbon steel (RAL 3020) or high-quality stainless steel (AISI 304 or AISI 316), each valve features welded unions and a reinforced structure capable of withstanding high pressures. The standard models come equipped with flanges and counterflanges compatible with DIN 24154-R1 (excluding Ø350, 550 sizes) and include a locking mechanism and sealing gasket for ensured closure. Designed for horizontal pipe assets, these valves accommodate a broad range of working temperatures and processes, ensuring maximum safety and compliance in industrial settings.
Specifications
- ATEX Certified EN 16447 for explosion isolation
- Materials: Carbon steel (RAL 3020), Stainless steel (AISI 304, AISI 316)
- Available Sizes: 200 mm, 250 mm, 300 mm, 350 mm, 400 mm, and 550 mm
- Working temperature range: -20°C to +60°C
- Applicable for metallic and non-metallic dust types
- ATEX classification: 3 – kst = 400 bar.m/s
- Maximum allowed air speed: 30 m/s
- Pmax: 9,9 bar
- MIE: 2 mJ
- MIT: 540 °C
- Additional options: Microswitch, capacitive sensor, siliconcel gasket, pneumatic cleaning, pneumatic rearm
Common Applications
- Industrial suction lines susceptible to explosions
- Facilities handling metallic or non-metallic dusts
- Systems requiring passive explosion protection measures
- Settings demanding ATEX-certified safety solutions
- Suction plants seeking to improve safety standards
- Organisations needing customizable safety valve solutions
- Environments operating within extreme temperature ranges
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