Wennstrom

Updated:
2012-04-26

Flame arresters

Follow the links in the table to go directly to the selected product.

PRODUCTS
	End-of-Line	Read more>
	Servus - In-Line	Read more>
	Integrated with VR1 adaptor	Read more under "Vapour revovery adaptors">

Flame arrester End-of-Line

Flame arrester
Ignitions sources, such as sparks caused by electrostatic discharge or lightning or mechanical knocks, in potentially explosive atmospheres can have disastrous effects. An investment in a flame arrester is a safeguard against such an accident.

Flame arresters have to be designed and tested in accordance to EN16852 - Flame arresters: performance requirements, test methods and limits for use.

Flame arresters are classed after media and flow rate. For instance, in order to be used together with E85, some countries and conditions require the class IIB1 whereas IIA+E85 is sufficient for others. In both cases, the end-of.-line flame arrester has to undergo type tests for endurance burning.

ES4661A is also equipped with an integrated pressure/vacuum (p/v) valve. The p/v valve will prevent unnecessary VOC emissions and enhance vapour recovery.

Total risk analysis
In combination with ES118 – VR1 adaptor with flame arrester, and the HSE Interlock valve at the filling point, the storage tank will be effectively safeguarded against probable risks for explosion.

Standard versions of the Flame arrestor End-of-Line (others available)		Item no.
	DN50 IIA+E85 Endurance burning	ES1660A
	DN50 IIA+E85 Endurance burning with integrated pressure- and vacuum valve	ES4661A
	DN50 IIA Endurance burning with integrated pressure- and vacuum valve	ES4461A

Can be included in
	Environment Safeguard End-of-Line	Read more under "System solutions">

Servus - flame arrester In-Line

An alternative to the end-of-line flame arrester is the in-line flame arrester. The in-line flame arrester can be tested for stable and unstable detonations as well as short time burning. In addition to this, it is also classed after the type of media. The type of flame arrester to choose depends on the conditions on site and the mounting position of the flame arrester.

For service station applications a stable detonation flame arrester of class IIA normally offers a adequate grade of protection.

All flame arresters require periodic inspection and maintenance. To facilitate this Wennstrom offers Servus, a service-friendly in-line flame arrester with or without an integrated p/v valve. The flame arrester is certified for use at service stations by the notified body IBExU in Germany.

Versions of the Flame arrester In-Line		Item no.
	DN50 I-L detonation flame arrester	ES6860AA
	DN50 I-L detonation flame arrester with integrated pressure- and vacuum valve	ES8861AA