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Válvula de bypass, 3 vías

PN10 to PN250, 150Lbs to 1500Lbs according to DN

DN15 to DN300 - 1/2" to 12"

  • Connection :
  • Any type of connection (screwed-on, welded or floating flange, threaded, SW, BW, double male or female connection, single male or female connection or other special connections)
  • Operation :
  • Multiturns pneumatic actuator
  • Stainless steel pneumatic actuator
  • Intelligent positioner
  • Electro-pneumatic, pneumatic positioner
  • Electro distributor
  • Electric actuator
  • Manual override
  • Chain handwheel
  • Manual gear actuator
  • Manual angular gear actuator
  • Manual operator with locking mechanism
  • Extended manual operator with/without cardans
  • Manual operator mounted on ISO base for later adaptation of actuator
  • Limit switches (mechanical, inductive or other)
  • Junction box
  • Specific configurations :
  • Bellows seal on stem
  • Inside and/or outside polishing
  • Removable seats
  • Heating jacket
  • Leak detector at stuffing box
  • Nitrogen flushing unit at junction box
  • Draining or cleaning nozzles
  • Certifications :
  • ATEX certification
  • Fire-safe design
  • FDA certificate for body seal and stuffing box packing



Some options are not compatible

Special valve can be designed upon request


DN15 to DN300

Pressure class

PN10 to PN250, 150Lbs to 1500Lbs according to DN


Welded, srcrewed-on or floating flange

Body shape

Straight, angle, other...

Body seal material

25% PTFE glass, graphite, reinforced graphite, stainless steel graphite or stainless steel PTFE spiral, helicoflex®, viton, kalrez®, EPDM…

Disc seating surface

Metal / metal, PTFE, EPDM, stellite, other...

Material in contact with the fluid

Steel, stainless steel, duplex and super duplex, inconel, incoloy®, hastelloy®, titanium, uranus®, nickel, monel


Manual, pneumatic (single or double acting), electrical or hydraulic

3 ways by-pass valve DN25 PN50 in stainless steel 316L, with lateral outlet, heating jacket and manual handwheel open/close switch limits
3 ways by-pass valve DN15 PN16 in stainless steel 316L, with manual handwheel
3 ways by-pass valve DN10 PN150 in stainless steel 316L, with manual handwheel
3 ways by-pass valves DN150 and DN80 PN100 in steel P265GH, with manual handwheel

Operational principle:

3 ways by-pass valves allow to switch over from one relief valve system to another.

Also called “selector valves”, 3 ways by-pass valves are adapted to compulsory decompression system (rupture disc, safety valve) and other parallel strainer systems.



- Avoid all risk of production system shutdown. Our 3 ways by-pass valves design ensure that at least one pressure relief devices be open.

- Switch over one pipeline to another through one single operation and without using interlock