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Overpressure Protection

F7000/F8000 Pilot Operated Safety Relief Valve

FEATURES

  • Choice of modulating or snap acting, flowing or non-flowing pilot
  • Soft seated (Elastomer or Plastic)
  • Backflow preventer & field test connection (quick-connect)
  • Full bore (F7000) or reduced bore (F8000) orifice
  • Full piston lift @ set pressure
  • Pilot vents to process (F100, F300, F500) or atm. (F200)
  • Leak tight seating and re-seating
  • Integral flange design
  • Integral nozzle (SS), 316/316L corrosion resistant trim

 

APPLICATIONS

  • Ambient or cryogenic fluids
  • Chemical processing
  • High cycle rates / long service life
  • Minimal product loss importance
  • Operation close to set point with zero leakage required

Service Envelope

Connection Sizes
Custom sizes & dual outlet bodies available on request
1” x 2” - 12” x 16”
(25mm x 50mm - 300mm x 400 mm)
Set Pressure Ranges
See F7000/8000 Catalog for orifice specific ratings
15 – 6,000 psig
(1.03 - 413 barg)
Temperature Ranges-423 to 525°F
(-252 to 274°C)
Orifice Area Range.134 – 111.87 in2
(.86 – 72174 mm2)
End Connections
Custom types available on request
Standard:
Female NPT (1” x 2” & 1.5” x 3” size only)
Integral ASME RF Flanged (up to 2500# inlet)

Specials:
DIN flanged (EN 1092-1), Grayloc, MS33649/AS5202
Materials of Construction
Custom available for service or on request
Carbon Steel, Stainless Steel, Monel, Inconel,
Hastelloy C / C22 / C276, Duplex 22% or 25% Cr
Seat Materials
Custom available for service or on request
F7040/F8040 Material (Plastic):
Teflon®, Ekonol-filled PTFE, Kel-F (PCTFE),
PI/PAI (Vespel®, Duratron®, or equal), PEEK

F7050/F8050 Material (Elastomer):
Buna-N, Viton® (FKM) or equal, EPR/EPDM, Aflas,
FFKM (Chemraz®, Kalrez®, etc), Polyurethane, HNBR

CERTIFICATIONS & COMPLIANCE

  • ASME Sec XIII (NB-18 Cert. No. 28000, 28011, 28022, 28099, 28156)
  • IGC Code Sizing (Air @ 0°C)
  • BV Mode 1 & Type Approval
  • DNV-GL Type Approval
  • LR Design Appraisal Document F7100/8100, F8200, F8300, F8500
  • US Coast Guard Certificate
  • Cryogenic testing per ISO 21013:1(2008)

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