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UK Office

Elmac Technologies
Greenfield
Holywell
Flintshire
North Wales
CH8 9DP

Phone: +44 1352 717600
Fax: +44 1352 717642
info@elmactechnologies.com
Products
SV Series - Light Duty End Of Line Deflagration Flame Arresters

sv light duty arrester pngSV Series

Light Duty End of Line Flame Arresters with Fixed Elements

Application

The Elmac Technologies® SV series of light duty end-of-line deflagration arresters is designed for installation at the end of a pipeline or on an atmospheric vent from vessels where flammable gases or vapours may be present. SV arresters provide an economical solution for situations where a simple light weight product is required. Typical applications include gas purging of equipment, sample lines and instrumentation lines.

Principle of Operation

A flame arrester uses an element with small apertures which allows gas or vapour to pass. If the apertures are smaller than the maximum experimental safe gap (MESG) for the gas or vapour then a flame cannot pass through the arrester, and is subsequently contained or extinguished.

Benefits

  • Available in sizes from 15mm to 50mm nominal bore
  • Suitable for gas groups up to IIB3
  • Lightweight arresters in zinc alloy or aluminium alloy
  • Optional weatherhood for environmental protection
  • Male to female connection adapters available
  • The Elmac technical team can advise on specific location queries

Gas Groups

Elmac flame arresters in the SV range are for use with gases in Groups I, IIA, IIB1, IIB2 and IIB3

General Layout

sv generic png
  1. Body
  2. Element Core
  3. Element Retaining Ring
  4. Weatherhood

SV Models

sv models 15 and 20 png

sv models 25 and 50 png

Material Specifications

Table 1. SV Series Material Specifications
RefDescriptionSV15FHSV20MHSV25MHSV50MH
1BodyMazak 3 Zinc AlloyMazak 3 Zinc AlloyMazak 3 Zinc AlloyLM6 Aluminium Alloy
2Element Core316L Stainless Steel316L Stainless Steel316L Stainless Steel316L Stainless Steel
3Element Retaining RingAluminiumAluminiumAluminiumAluminium
4WeatherhoodAluminiumAluminiumAluminiumAluminium

Dimensions

Table 2. SV Series Unit Dimensions
NB (mm)Model Number
(with weatherhood)		Model Number
(no weatherhood)		Screw ConnectionWeight (kg)Ø Element (mm)
15SV15FHSV15F1/2" BSPT female0.125
20SV20MHSV20M3/4" BSP male0.125
25SV25MHSV25M1" BSP male0.244
50SV50MHSV50M2" BSP male0.379

Operating Limits

Table 3. SV Series Operating Limits
NB (mm)Gas GroupMin Service Temp (°C)Max Service Temp (°C)
15 to 50IIB3-20+60

Pressure Drop & Flow Curves

Pressure drop information and flow curve charts for the SV Series arresters can be found in the SV product datasheet in the Data Centre.

Variations

The SV series of light duty end of line flame arresters has the following options:

  • Female fixing (BSPT)
  • Male fixing (BSP)
  • Optional weatherhood

Standards Compliance

All flame arresters have been tested and certified in accordance with national or international standards. Actual device performance is verified in the Elmac Technologies "state of the art" in-house test facility.

Elmac Technologies has been independently assessed by a notified body against the requirements of the ATEX Directive 94/9/EC. Elmac flame arresters meet the criteria and are supplied with CE and EX markings, an EC Declaration of Conformity and an EC Type Examination Certificate.

standards jpg

Quick Links:

SV Series Data Sheet (in data centre)
End of Line Flame Arresters
Elmac Expertise
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Elmac Technologies specialises in the manufacture of Flame Arresters and supply of Pressure Relief Equipment.
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