Model 943-VM Vacuum Tank-Saf

Vacuum Relief Valve

Model 943-VM Vacuum Tank-Saf

Performance Features

  • Bottom-mount design
  • Suitable for normal vacuum relief
  • Complies with API 2000 Seventh Edition / EN ISO 28300
  • Certified to ATEX – Directive 2014/34/EU
  • Weight-loaded pallet design; intake from atmosphere
  • Achieves full open (flowing pressure) at just 10% overvacuum
  • 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
  • Screen protects valve internals from environment and contamination
  • Pallet, seat & stem-guide made from stainless steel
  • Modular design reduces requirements for inventory of spare parts
  • Available in nom. diameter 2” – 12”

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  • Specification Options
  • Materials
  • Documentation

Protection

  • Gas/air or vapour/air mixtures II 1/2 G Ex h IIB TX

Connection Type

  • EN or DIN: ISO 7005-1
  • JIS B 2220
  • ASME B16.5

Compliance with Guidelines

  • API 2000 Seventh Edition / EN ISO 28300
  • ATEX – Directive 2014/34/EU
  • EN ISO 16852:2016

Materials of Construction

  Stainless Steel Carbon Steel Other Materials on request
Body ✓ ✓  
Seat ✓ ✓
Pallet ✓   ✓
Diaphragm ✓   FEP
Seal NBR, FPM, EPDM, FEP ✓

Dimensions

DN A B C*
in mm in mm in mm in mm
               
               
               
               
               
               
               
               
               
               

Product Literature

Model 943-VM Brochure

Installations

Model 943-VM – 300 Installation Instruction