Model 933-A Inline Flame Arrester

Inline Deflagration, Stable and Unstable Detonation, Short Time Burning Flame Arrester

Model 933-A Inline Flame Arrester

Performance Features

  • In-line deflagration arrester / inline detonation arrester
  • Stable and unstable detonation
  • Short time burning
  • EC prototype test certificate according to ATEX Directive 2014/34/EU and EN ISO 16852:2016
  • Available in nom. Diameter: DN25 (1”) – DN80 (3”)

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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
  • Temperature Sensor – resistance thermometer with protection type
    • Inherently safe (EEx i)
    • Pressure Resistant Enclosure (EEx d)

Connection Type

  • DIN 2501 PN10
  • ANSI B16.5 – 150 RF
  • Other types available upon request

Compliance with Guidelines

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

Materials of Construction

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

Painting Options Available

Dimensions

DN A* B C DIN Weight* ANSI 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 kg kg kg kg kg kg kg kg
1 25 183 196 208 220 108 240 6.2 6.6 6.9 7.4 5.7 6 6.3 6.7
1.25 32 118 245 7.6 8 8.4   6.5 6.8 7.2   
1.5 40 150 260 10.8 11.4 12   10.1 10.8 11.4  
2 50   202   215** 225     175 273 15 15.8 16.7   14.2 15 15.9  
2.5 65   208   220           207   290 20.5 22     19.5 21    
3 80   234   247           227   299 24 26     23 25    

* Dependent on set pressure
** ?? 0.3: 213

Product Literature

Model 933-A

Installations

933-A – 25 to 40/2x0.7/p
933-A – 25 to 40/3x0.5/e
933-A – 25/3x0.3/De
933-A – 25/3x0.5/m100
933-A – 25/3x0.7/D
933-A – 25/4x0.5/D4IIB3P1T1
933-A – 25/5x0.2/D4IICP1T1
933-A – 40 to 80/3x0.3/De
933-A – 40/3x0.5/Dp
933-A – 40/3x0.5/DpC
933-A – 40/4x0.17/D
933-A – 40/4x0.2
933-A – 40/4x0.2/D
933-A – 50/2x0.7/m
933-A – 50/2x0.7/p
933-A – 50/3x0.5/D
933-A – 50/3x0.5/e
933-A – 50/3x0.7/D
933-A – 50/4x0.3/D
933-A – 50/4x0.3/p
933-A – 50/5x0.2-d/D
933-A – 50/6x0.3-d/iDe to 933-A 80/6x0.3-d/iDe
933-A – 80/3x0.5/Dp