Butterfly valve, type 242

The pneumatically actuated wafer style butterfly valve type 242 series from GF Piping Systems is the ultimate choice for the high demands of the industrial world. The unique double eccentric design means the disc is not in contact with the seal in the open position. The result is less wear and operating torques that are half that of our previous model. Better chemical compatibility is achieved because the inner body is the same material as the pipe.

The unique o-ring design insures a superior seal with virtually any type of flange without the need for additional gaskets. Additionally, the electro-pneumatic positioner, stroke limiter, and feed back switches give flexibility for integration into a wide variety of applications.

Range: 2” to 8”
Nominal pressure: 150 PSI / 10 bar (bidirectional)
Control pressure: 60-100 PSI (6 bar)
Materials: PVC-U, PVC-C, ABS, PP-H and PVDF

Fields of Application:

  • water treatment
  • power plants
  • shipbuilding
  • electroplating
  • chemical process industry
  • automotive industry
  • cooling equipment


  • size range 2” to 8" lug style ISO (Type 141); ANSI (Type 142)
  • available in PVC-U, PVC-C, ABS, PP-H and PVDF
  • rated for 150 PSI (bidirectional)
  • EPDM or FPM seals
  • double eccentric, off-center shaft for reduced wear and lower torque requirements
  • special o-ring design eliminates the need of flange gaskets
  • body: expoxy coasted cast iron


  • declutchable manual override
  • limit switches
  • electo-pneumatic positioner (4-20mA) or 3-15 PSI
  • ASI control


PETERSS SIA, Dēļu iela 4, Rīga, LV-1004 Latvija,
Tel. +371 67 605 608, e-mail:
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