The products

Besa designs and manufactures safety valves suitable for the discharge of aeriform and liquids. Besa safety valves are designed, manufactured and selected in compliance with European Directives 2014/68/EU (NEW PED), 2014/34/EU (ATEX) AND STANDARDS EN 4126-1, EN 12516, ASME B16.34, API 520, API 526.

SeriesMain featuresModelConnectionsCapNozzleMax set pressure (barg)In accordance withState of the fluidCertifications
130Same inlet / outlet DN


131FlangedClose capSemi nozzle40EN4126Gas - LiquidsCE PED - EAC - RINA
130Same inlet / outlet DN


132FlangedOpen capSemi nozzle40EN4126GasCE PED - EAC
130Same inlet / outlet DN


131bFlangedClose capFull nozzle40EN4126Gas - LiquidsCE PED - EAC - RINA
130Same inlet / outlet DN


132bFlangedOpen capFull nozzle40EN4126GasCE PED - EAC
139Threaded and
slip-on flanges
connections		139Flanged or threadedClose capFull nozzle500EN4126Gas - LiquidsCE PED - EAC - ATEX - RINA
240

241FlangedClose capSemi nozzle40EN4126Gas - LiquidsCE PED - EAC - ATEX - RINA - DNV GL - BV
240

242FlangedOpen capSemi nozzle40EN4126GasCE PED - EAC
240

241bFlangedClose capFull nozzle40EN4126Gas - LiquidsCE PED - EAC - ATEX - RINA - DNV GL - BV
240

242bFlangedOpen capFull nozzle40EN4126GasCE PED - EAC
240Thermoplastic
lined body and
PTFE bellow		241TFlangedClose capSemi nozzle10EN4126Gas - LiquidsCE PED - EAC
240Thermoplastic lined body
PTFE bellow
PTFE full nozzle		241TbFlangedClose capFull nozzle16EN4126Gas - LiquidsCE PED - EAC
240PTFE bellow
PTFE full nozzle		241bTFlangedClose capFull nozzle16EN4126Gas - LiquidsCE PED - EAC
240

241FThreadedClose capSemi nozzle40EN4126LiquidsCE PED - EAC - ATEX - RINA - DNV GL - BV
240

242FThreadedOpen capSemi nozzle40EN4126GasCE PED - EAC
240

241bFThreadedClose capFull nozzle40EN4126Gas - LiquidsCE PED - EAC - ATEX - RINA - DNV GL - BV
240

242bFThreadedOpen capFull nozzle40EN4126GasCE PED - EAC
249Threaded and
slip-on flanges
connections		249Flanged or threadedClose capFull nozzle500EN4126Gas - LiquidsCE PED - EAC - ATEX - RINA
250

251FlangedClose capSemi nozzle160EN4126Gas - LiquidsCE PED - EAC - ATEX - RINA
250

252FlangedOpen capSemi nozzle160EN4126GasCE PED - EAC
260

261FlangedClose capFull nozzle400 (DN25)EN4126Gas - LiquidsCE PED - EAC - ATEX - RINA
260

262FlangedOpen capFull nozzle400 (DN25)EN4126GasCE PED - EAC
271PFA lined body
PTFE bellow

271FlangedClose capFull nozzle16EN4126Gas - LiquidsCE PED - EAC - ATEX
280According to API 526


281FlangedClose capFull nozzle250API526Gas - LiquidsCE PED - EAC - ATEX
280According to API 526


282FlangedOpen capFull nozzle250API526GasCE PED - EAC
290According to API 526
With adjusting ring

291FlangedClose capFull nozzle250API526Gas - LiquidsCE PED - EAC - ATEX
290According to API 526
With adjusting ring

292FlangedOpen capFull nozzle250API526GasCE PED - EAC
BESA CATALOGUE PDF

139 – 240F – 249 series

Threaded

MAIN FEATURES

  • Threaded connections GAS/NPT from DN 1/4″ to DN 2″
  • Valves available with semi or full nozzle
  • Standard materials of construction: cast iron, carbon steel, stainless steel
  • Set pressure from 0,25 to 500 bar
  • Certifications: PED / ATEX / EAC / RINA / G.L. / B.V.

130 – 240 – 250 – 260 – 280 – 290 series

Flanged

MAIN FEATURES

  • Flanged connections EN/ANSI from DN 15 (1/2″) to DN 250 (10″)
  • Valves available semi or full nozzle
  • Standard materials of construction: cast iron, carbon steel, alloy steel, stainless steel
  • Set pressure from 0,2 to 400 bar
  • Certifications: PED / ATEX / EAC / RINA / G.L. / B.V.

139 – 249 – 250 -260 – 280 -290 series

High Pressures

MAIN FEATURES

  • EN/ANSI flanged connections from DN 25 (1″) to DN 200 (8″)
  • GAS/NPT threaded connections from DN 1/4″ to DN 1″
  • Valves available with semi or full nozzle
  • Standard materials of construction: carbon steel, alloy steel, stainless steel
  • Set pressure from 0,25 to 500 bar
  • Certifications: PED / ATEX / EAC / RINA

280 – 290 series

API 526

MAIN FEATURES

  • API 526 compliant safety valves
  • ANSI B16.5 flanged connections from DN 1″ to DN 8″
  • Valves available with full nozzle
  • Standard materials of construction: carbon steel, alloy steel, stainless steel
  • Set pressure from 0,5 to 300 bar
  • Certifications: PED / ATEX / EAC

240 – 271 series

PFA coated

MAIN FEATURES

  • PFA® lining
  • Flanged connections DN 25 (1″) and DN 150 (6″)
  • Set pressure from 0,2 bar to 16 bar

Exclusive

Special Executions

Some of the valves with special executions that BESA is able to provide on its products to meet the needs of its customers.

Certifications

Below are the main certifications obtained by BESA for the safety valves it produces.

Applications

The main fields of application for BESA safety valves are: boilermaking, energy, pharmaceutical, marine, petrochemical, skid manufacturers, chemical industry, cryogenic and oxygen treatments, food industry, LPG/LNG energy storage and transportation, onshore and offshore oil and gas, power generation, LNG/LPG.

Wikipedia - Safety valve