Heavy Duty Scotch Yoke Pneumatic actuator, symmetrical with movement from 0 to 90°.

  • Power supply: air or any gas compatible with the construction materials
  • Double and stop adjustments, open and closed position: 0 ± 5° 90 ± 5°.
  • Torque Output (DA): 600 to 300000 Nm (at 6 bar), 5130 to 2655224 in/lbs (at 80 psi)
  • Torque Output (SR): 215 to 107520 Nm (at 6 bar), 1903 to 951632 in/lbs (at 80 psi)
  • Temperature: standard -30 to +100°C (-22 to + 212°F), high -20 to +150°C (-4 to +302°F), low -55 to +80°C (-67 to +176°F)
  • Welded steel, epoxy powder coated, red (RAL 3020) or according to customer requirements.
  • Interface: ISO 5211/DIN3337 and NAMUR valves, VDI/VDE3845 and NAMUR top mounted accessories

Technical data

Components (DA)

Attuatore heavy duty scotch Yoke
ElementDescriptionQuantityMaterialTreatment
1Body1Carbon SteelEpoxy Painted
2Cover1Carbon SteelEpoxy Painted
3Trolley Guide bar 11Chromed Steel
4Trolley Guide bar 21Chromed Steel
5Trolley1Carbon SteelPhosphate treated
6Yoke Bush2Bronze
7Trolley bush 11Bronze
8Trolley bush 21Bronze
9Yoke1Carbon SteelPhosphate treated
10O-ring piston4Nitrile
11O-ring piston bush12Nitrile
12Pin1SteelPhosphate treated
15Lateral Bush1Bronze
18NAMUR adaptor1AluminiumEpoxy Painted
20Retaining Rings2Nickel treated
21Retaining Rings2Nickel treated
22Cover screws10
23Cover screws5
24Upper closing flange1Carbon SteelEpoxy Painted
26Adjusting screw2
28Adjusting nut2
32Cylinder housing1Carbon SteelNickel traeted / Epoxy painted
33Piston1Carbon SteelPhosphate traeted
34Piston rod1Chromed Steel
35Anterior Flange1Carbon SteelEpoxy Painted
36Posterior Flange1Carbon SteelEpoxy Painted
37Piston Guide Bar3Chromed Steel
38Fixing nut1
39Guide bar bush3Bronze
40Tie bar6Carbon SteelEpoxy Painted
44Retaining Rings3Nickel treated
45Piston rod O-ring2Nitrile
51Nut6Epoxy Painted
52Double Acting lateral flange1Carbon SteelEpoxy Painted

Components (SR)

Attuatore heavy duty scotch Yoke
ElementDescriptionQuantityMaterialTreatment
1Body1Carbon SteelEpoxy Painted
2Cover1Carbon SteelEpoxy Painted
3Trolley Guide bar 11Chromed Steel
4Trolley Guide bar 21Chromed Steel
5Trolley1Carbon SteelPhosphate treated
6Yoke Bush2Bronze
7Trolley bush 11Bronze
8Trolley bush 21Bronze
9Yoke1Carbon SteelPhosphate treated
10O-ring piston4Nitrile
11O-ring piston bush12Nitrile
12Pin1SteelPhosphate treated
15Lateral Bush1Bronze
18NAMUR adaptor1AluminiumEpoxy Painted
22Cover screws10
23Cover screws5
24Upper closing flange1Carbon SteelEpoxy Painted
26Adjusting screw2
28Adjusting nut2
32Cylinder housing1Carbon SteelNickel traeted / Epoxy painted
33Piston1Carbon SteelPhosphate treated
34Piston rod1Chromed Steel
35Anterior Flange1Carbon SteelEpoxy Painted
36Posterior Flange1Carbon SteelEpoxy Painted
37Piston Guide Bar3Chromed Steel
38Fixing nut1
39Guide bar bush3Bronze
40Tie bar6Carbon SteelEpoxy Painted
41Nut6Epoxy Painted
44Retaining Rings3Stainless Steel
45Piston rod O-ring2Nitrile
46Spring Cartridge1Carbon SteelEpoxy Painted
48Spring Plate1Carbon Steel
49Spring1SiCrEpoxy Painted
52Spring Cartridge Closing Flange1Carbon SteelEpoxy Painted
55Spring Rod1Chromed Steel
/Spring guide bar3Chromed Steel
/Spring guide bar bush3Bronze
/Bush retaining Rings3Stainless Steel

Areas of expertise

Case history

Case history

TEG Bulbuceni

Valves mounted in the wrong position Sector: Oil & Gas Customer: Petrom (OVM group) Location: Romania Products: Heavy duty spring return pneumatic actuators. Problem During the construction of the plant, two valves were mounted in the wrong position, the positions of one normally open and one normally closed were reversed by the company that carried… (continue)