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ARI-SAFE-SN ANSI full lift safety valves - flanged

ARI-SAFE-SN full lift Semi Nozzle (SN) safety valve for industrial applications. For steam, condensate, hot water, gases, and other process media.
Available in different materials, connections, and several options with bellow seal, soft-seating, balanced seat, stellite seat etc.

  • Fig. 901 Open bonnet, closed lifting device
  • Fig. 902 Open bonnet, open lifting device
  • Fig. 911 Closed bonnet, gastight cap
  • Fig. 912 Closed bonnet, open lifting device

Contact us for more information about these variants.

SN – Semi nozzle valves

Body materials:
Carbon steel SA 216 WCB and stainless steel SA 351 CF8M. Metal seats are standard

Sizes (standard):
1″ x 2″ up to 6″ x 10″, ANSI flanged connections

Pressure classes:
ANSI 150/150 & 300/150

Options:
Lifting device, stainless steel bellow seal, soft seated EPDM / Viton / SHR / Neoprene O-ring, limit switch, drain port, springs in special material, special flange drilling, certificates and different approvals.

 

Properties
  • Full lift type
  • Flanged connection ASME B16.5
  • Dimensions: 1" x 2" - 6" x 10"
  • Pressure class: ANSI Class 150-300
  • Open or closed bonnet
  • With or without lifting device
Technical data
  • Face to face dimensions acc to API 526
  • Flanges acc to ASME / ANSI B16.5
  • Minimum set-pressure: 0,2 barg
  • Blowdown up to 10%
Technical documentation
  • Acc. to API 520 (ASME VIII)
  • Pressure/temperature acc. to ANSI
  • ASME Code section VIII-Division 1
  • UV-stamp NB-stamp
  • Certificate EN 10204 3.1 on request
  • Other types of certifications on request
Technical table
Possible material combinations:
Description: Materials:
Body: Carbon steel SA 216 WCB, stainless steel SA 351 CF8M
Bonnet: Carbon steel SA 216 WCB, stainless steel SA 351 CF8M
Seat: Stainless steel SA 479 Gr. 316 Ti
Disc: Stainless steel SA276 Gr. 440 / SA 479 Gr. 316 Ti
Seal: Standard metal to metal
Other executions: Bellow seal, heat resistant springs, stellite seat and disc,
  soft-seated EPDM, Viton (FPM), neoprene (CR), proximity switch,
  special flange drilling, drain plug, lift-stop, test gag.
  SHR-soft seal for steam max +220°C