Model 944 End-of-Line Pressure/Vacuum Tank Vents

Pressure and Vacuum Vent

Model 944 End-of-Line Pressure/Vacuum Tank Vents

Performance Features

  • Suitable for normal pressure and vacuum relief
  • Complies with API 2000 Seventh Edition / EN ISO 28300
  • Certified to ATEX – Directive 94/9/EC
  • Weight-loaded stacked pallet design; discharges to atmosphere (guidance is internal to the valve body protecting from freeze-up during inclement weather)
  • Achieves full open (flowing pressure/vacuum) at just 10% overpressure
  • Provides premium sealing with FEP diaphragms (metal-to-metal available for special requirements or higher settings)
  • Leakage rates much tighter than API 2000/EN ISO 28300 requirements
  • Weather-hood and screen protect pallets/seats from environment and contamination
  • Pallets, seats & stem-guides made from stainless steel
  • Modular design reduces requirements for inventory of spare parts

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  • Specification Options
  • Materials
  • Documentation

Protection

  • Gas/air or steam/air mixtures II ½ G c IIB T X

Connection Type

  • EN or DIN: ISO 7005 - PN10
  • JIS B 2220 - 10k
  • ANSI: ANSI B.16.5 - 150 RF

Other types available upon request

Compliance with Guidelines

  • ATEX IBExU14ATEX1121 X
  • Guideline 94/9/EC (ATEX 95)
  • EN ISO 28300
  • EN1127-1
  • EN 13463-1
  • EN13463-5
  • API Standard 2000 7th Edition (March 2014)

Materials of Construction

  Stainless Steel Ductile Iron Carbon Steel FEP Other Materials on request
Diaphragm ✓   ✓ ✓
Valve Set/Pallet ✓ ✓
Valve Seat ✓       ✓
Body ✓ ✓* ✓**   ✓

* Available in sizes DN 50 (2”), DN 80 (3”), DN 100 (4”)
** Available in sizes DN 150 (6”), DN 200 (8”), DN 250 (10”)

Dimensions


DN A B ØD H Weight *
in mm in mm in mm in mm in mm kg
2 50 6.18 157 5.31 135 6.69 170 12.24 311 21
3 80 7.24 184 6.38 162 9.25 235 15.75 400 32
4 100 6.54 217 7.48 190 11.42 290 17.83 453 52
6 150 9.45 240 6.27 210 12.99 330 19.29 490 80
8 200 11.22 285 10.91 277 14.76 375 23.43 595 120
10 250 14.80 376 12.20 310 17.52 445 27.36 695 155

* Dependent on set pressure

 

 

 

 

 

 

Product Literature

Model 944 Brochure
Model 944 Brochure

Installations

Model 944 – 50 to 250 Installation Instruction