Model 931-B Inline Flame Arrester

Inline Deflagration Flame Arrester/Inline Detonation Arrester

Model 931-B Inline Flame Arrester

Performance Features

  • In-line deflagration arrester / inline detonation arrester
  • Stable and unstable detonation
  • EC prototype test certificate according to ATEX Directive 2014/34/EU and EN ISO 16852:2016
  • Available in nom. Diameter: DN6 (1/8”) – DN15 (1/2”)

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  • Specification Options
  • Materials
  • Documentation

Protection

Gas/air mixtures for explosion groups up to and including IIC (NEC Group B), MESG < 0.50mm

Connection Type

  • Rp to ISO 7-1 (DIN 2999)
  • BSP to BS 21
  • NPTF to ANSI B1.20.3
  • Other types available upon request

Compliance with Guidelines

  • ATEX 2014/34/EU
  • EN ISO 16852:2016

Materials of Construction

  Carbon Steel Stainless Steel Other Materials on request
Metal Foil Element ✓ ✓ ✓
Body / Cover ✓ ✓ ✓

Painting Options Available

Dimensions

DN A B C* D* SW Weight
N=2 N=3 N=4 N=5 N=2 N=3 N=4 N=5 N=2 N=3 N=4 N=5
in mm in mm in mm in mm in mm in mm in mm in mm in mm in mm in mm in mm kg kg kg kg
0.125 6    45 25 60 72 84 96 81 93 105 117   22 0.57 0.76 0.86 0.96
0.25 8
0.375 10 28   24
0.5 15

* N: number of metal foil elements

Product Literature

Model 931-B

Installations

931(-B) – ¼(⅛)-4x0.2
931-B – 1/2(3/8)-4x0.2/D
931-B – 1/2(3/8)-5x0.2/D
931-B – 2x0.7/m
931-B – 3x0.5/D4IIAP1T2.2
931-B – 3x0.5/IDp
931-B – 3x0.5/IIAP2.5T120