Mark 68G Series

Company Name : Jordan

Sizes: 1/2″ thraugh 2″ (DN8 thraugh DN50)

End Connections

  • Threaded – NPT, BSPT, BSPP
  • Flanged

Body Materials

  • Branze
  • Ductile lran
  • Carban Steel
  • Stainless Steel

Plug Materials

  • Buna-N
  • Vitan
  • Hardened 17-4 pH Stainless Steel
  • EPDM

Trim and Seat Materials: 316 Stainless Steel

Spring Housing Material*: Cast lran

Optianal: Carban Steel, Stainless Steel


Diaphragm Materials*

  • Buna-N/Nylan (200ºF (93ºC) temp limit)
  • Stainless Steel (500ºF (260ºC) temp limit)
  • Vitan/Namex (450ºF (232ºC) temp limit)
  • Jarlan (450ºF (232ºC) temp limit)

Maximum lnlet Pressure: 300 psi (20,7 bar)

Maximum Temperature

  • 200º F (93ºC) with Buna-N plug and diaphragm
  • 350º F (177ºC) with Vitan plug and Vitan ar SST diaphragm
  • 500ºF (260ºC) with metal seat and SST diaphragm

Minimum Temperature

  • -20ºF (-29ºC) with Buna-N plug and diaphragm
  • -15ºF (-26ºC) with SST diaphragm and SST ar Vitan plug
  • -20ºF (-29ºC) with SST diaphragm and Buna-N plug

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