Model 931-A

In-Line Deflagration, Stable and Unstable Detonation Endurance Burning

Model 931-A

Performance Features

  • Tube protection against deflagration
  • Tube protection against detonation
  • Protection against continuous fire
  • Short time burning options available
  • Available in nom. Diameter: DN8 (1/2”) – DN32 (1 1/4”)

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  • Specification Options
  • Materials
  • Documentation

Protection

Gas/air or steam/air mixtures of the following explosion groups:
  • I (methane) NSW = 1.14 mm
  • IIA (D) NSW = 0.90 mm

Connection Type

  • Rp to ISO 7-1 (DIN 2999)
  • BSP to BS 21
  • NPTF to ANSI B1.20.3

Compliance with Guidelines

EC type examination certificate based on to directive 94/9/EC, according to ATEX 95 and ISO 16852

Materials of Construction

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

Painting Options Available

Dimensions

DN A B Weight
DIN ANSI
in mm in mm in mm kg kg
0.25  15   130   95 3.8 3.1
0.75 20   130    108 4.8 4.2
1 25   130   108 5.2 4.8
1.25 32   130   118 6.5 5.8

Product Literature

Model 933-G Brochure

Installations

Model 933-A/933-G – 25 to 40/2x0.7/p
Model 933-A/933-G – 25 to 40/3x0.5/e
Model 933-A/933-G – 25/3x0.3/De
Model 933-A/933-G – 25/3x0.5/m100
Model 933-A/933-G – 25/3x0.7/D
Model 933-A/933-G – 25/4x0.5/D4IIB3P1T1
Model 933-A/933-G – 25/5x0.2/D4IICP1T1
Model 933-A/933-G – 40 to 80/3x0.3/De
Model 933-A/933-G – 40/3x0.5/Dp
Model 933-A/933-G – 40/3x0.5/DpC
Model 933-A/933-G – 40/4x0.17/D
Model 933-A/933-G – 40/4x0.2
Model 933-A/933-G – 40/4x0.2/D
Model 933-A/933-G – 50/2x0.7/m
Model 933-A/933-G – 50/2x0.7/p
Model 933-A/933-G – 50/3x0.5/D
Model 933-A/933-G – 50/3x0.5/e
Model 933-A/933-G – 50/3x0.7/D
Model 933-A/933-G – 50/4x0.3/D
Model 933-A/933-G – 50/4x0.3/p
Model 933-A/933-G – 50/5x0.2-d/D
Model 933-A/933-G – 50/6x03-d/iDe to Model 933-A/933-G 80/6x03-d/iDe
Model 933-A/933-G – 80/3x0.5/Dp