Bi-directional in-line deflagration flame arrester, endurance burning proof - H 32.1 N | KITO Armaturen | Philippopoulos s.a.
Bi-directional in-line deflagration flame arrester, endurance burning proof - H 32.1 N | KITO Armaturen | Philippopoulos s.a.

Bi-directional in-line deflagration flame arrester, endurance burning proof - H 32.1 N | KITO Armaturen

KITO H 32.1 N In-line Deflagration Flame Arrestor

The KITO H 32.1 N is a bidirectional in-line deflagration flame arrestor designed for the protection of vessels, equipment, and piping systems containing flammable gases or vapors. Unlike short-time burning variants, this model is tested for stabilized burning and is rated for unlimited endurance burn, as specified in the manufacturer’s technical documentation.

Operating Limits

  • Explosion group: IIA1, MESG ≥ 1.14 mm
  • Operating pressure: up to 1.1 bar abs.
  • Operating temperature: up to 60 °C
  • Max. distance from ignition source: 50 × pipe internal diameter
  • Installation: horizontal or vertical piping
  • Function: bidirectional protection against deflagration

Typical Applications

Applied in tank venting, vapor recovery lines, chemical process vent networks, and piping where ignition may occur on either side of the device. Endurance-burning certification is relevant where safety scenarios do not exclude prolonged thermal loading on the arrestor element.

Dimensions and Connections

Available in sizes DN 50 to DN 200, with EN 1092-1 type B1 flanged connections and optional ASME B16.5 Class 150 RF. Connection classes: PN 16 for smaller sizes, PN 10 for DN 200.

Construction Materials

  • Variant I: body cast steel 1.0619, gasket HD 3822, mesh 1.4310
  • Variant II: body 1.0619, PTFE gasket, internals 1.4571 / 1.4581
  • Variant III: cast stainless steel body 1.4408, PTFE, mesh 1.4571
  • Flame arrestor element: fully replaceable
  • Bolting: galvanized steel or A4, depending on variant

Monitoring and Maintenance

Optional PT100 sensor (3/8" 1.4571) for thermal load detection on the element. Selection should consider flow, pressure drop, explosion group, condensate, and potential element fouling. Flow curves are provided for air at ρ = 1.29 kg/m³, 273 K.

Certification

Type examination certificate per EN ISO 16852 and CE marking in accordance with ATEX 2014/34/EU.

Standard (Options)
  • DIN
Connection (Options)
  • Flanged
Material (Options)
  • 1.0619
  • 1.4408
Pressure Rating (Options)
  • PN 10
  • PN 16

Datasheet and documents

Description

KITO® INE-DB-I-…/…

KITO® INE-DB-I-…/…-T (-TT)

  • For installation into pipes to the protection of vessels and components against deflagration of flammable liquids and gases.
  • Approved for all substances of explosion group IIA1 (old: I) with a maximum experimental safe gap (MESG) ≥ 1.14 mm.
  • Bi-directionally working in pipes, whereby an operating pressure of 1.1 bar abs. and an operating temperature of 60 °C must not be exceeded.
  • All sizes are tested against “stabilized burning” and withstand this for indefinite time (endurance burn).
  • The distance between a potential ignition source and the flame arrester must not exceed 50 times the inner pipe diameter.
  • An installation into horizontal and vertical pipes is permissible.
  • To detect a thermal load on the KITO® flame arrester element in operation, a temperature sensor can be implemented as an option into the flame arrester body.