Deflagration proof pressure and vacuum relief valve - E 23 N | KITO Armaturen | Philippopoulos s.a.
Deflagration proof pressure and vacuum relief valve - E 23 N | KITO Armaturen | Philippopoulos s.a.

Deflagration proof pressure and vacuum relief valve - E 23 N | KITO Armaturen

KITO E 23 N – Pressure/Vacuum Relief Valve with IIB3 Flame Arrester

The KITO VD/KG-IIB3-… is a terminal breathing valve designed for tank vent openings. It is installed vertically on fixed-roof tanks and serves to relieve both overpressure and vacuum conditions. The valve is type-tested and certified for atmospheric flame transmission in accordance with relevant standards.

Application

Suitable for explosion group IIB3 media with MESG ≥ 0.65 mm and a maximum operating temperature of 60 °C. Used where tank breathing control and limitation of undesired vapor losses or emissions are required.

Sizes and Settings

  • DN 50, 80, 100, 150
  • Connection: PN 16
  • Optional: ASME 2", 3", 4", 6"
  • Vacuum setting: 2–60 mbar
  • Pressure setting: 2–60 mbar
  • Flow rates based on 20% accumulation above setpoint

Construction Materials

Standard upper body: carbon steel, optional stainless steel 1.4571. Lower body: cast steel 1.0619, optional cast stainless steel 1.4408. Seat: stainless steel 1.4571. Gasket: PTFE. Flame arrester element is replaceable.

Pallet and Sealing Options

Pallet selection depends on setpoint:

  • 2 to <3.5 mbar: aluminum pallet
  • ≥3.5 to 60 mbar: stainless steel pallet 1.4571
  • Sealing: FEP & HD3822 up to 14 mbar, PTFE above 14 mbar

Connections and Certification

Flanges: EN 1092-1 Type B1, optional ASME B16.5 Class 150 RF. Type certificate per EN ISO 16852. Marking per ATEX 2014/34/EU. Optional condensate drain with explosion and endurance burning protection available.

Standard (Options)
  • DIN
Connection (Options)
  • Flanged
Material (Options)
  • 1.4571
  • Steel
Pressure Rating (Options)
  • PN 16

Datasheet and documents

Description

KITO® VD/KG-IIB3-…

  • As end-of-line armature for venting apertures on tank installations.
  • Tested and approved against atmospheric deflagrations for all materials of the explosion group IIB3 with a maximum experimental safe gap (MESG) ≥ 0.65 mm and an maximum operating temperature of 60 °C.
  • Used mainly as venting and breather device for fixed roof tanks.
  • Used to prevent inadmissible pressure and vacuum and to minimize unwelcome gas losses or inadmissible emissions respectively.
  • The housing is mounted perpendicularly on a tank roof.
  • Available with an explosion and endurance burning proofed condensate drain device.