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