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4700 Series - Steam Safety Valves
General Specifications:
Size 1/2” x 3/4” & 3/4” x 1” & 1”x1”
Orifice Areas B (0.028 sq2) to E (0.225 sq2)
Set Pressure Ranges 15 to 6000 psig (1.0 to 413 barg)
Temperature Ranges -450 to 1000°F (-268 to 299°C)
Flange Classes 150# - 1500#
Materials of Construction Carbon or Stainless Steel Body & Bonnet
Stainless Steel Trim
NACE
Hastelloy
Monel
  • Balanced bellows design option
  • Metal seat with optional o-ring
  • Full nozzle construction
  • ASME/NB Section VIII and III for Air, Steam and Water
  • CSA B51 (Canada CRN)
  • ISO 9001- 2008
  • Nuclear – 10 CRF 50 Appendix B, NCA-4000, NQA-1 N285.0
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