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4700 1

4700 SERIES – STEAM SAFETY VALVE

  • Balanced bellows design option
  • Metal seat with optional o-ring
  • Full nozzle construction

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

Certifications:

  • 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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