Quadra-Powr X Spring Diaphragm Rotary Actuator

Brand: Valmet

Exclusively developed for quarter-turn valve service, Quadra-PowrX Spring-Diaphragm Actuators provide safe and reliable operation even when minimal supply pressures are available. Yet they are capable of operating at pressures as high as psi: 100 (kPa: 700, bar: 7). 

These units can be operated by air, gas, water, oil, or other supply media compatible with the ductile iron/carbon steel casing of the actuator and the Buna-N diaphragm reinforced with polyamide fabric. 

Quadra-PowrX torque outputs range from 15 to 796 Nm (11 to 587 feet-pounds), depending on actuator selection and available supply pressure.

Specifications

Brand

Actuator Type

  • Handwheel
  • Spring Diaphragm

Bearing Material

  • Driver Arm, Clevis: Stainless Steel
  • Thrust: Nylon
  • UHMW Polyethylene

Cover Material

  • Ductile Iron

Diaphragm Material

  • Buna-N
  • Diaphragm with Centering Hole: Nitrile
  • Diaphragm with Centering Hole: Polymide Fabric Blend

Enclosure Finish

  • UV Resistant Polyurethane Coating
  • Zinc Phosphate Epoxy

Enclosure, Body Material

  • Diaphragm & Spring Casing: Carbon Steel
  • Driver Housing: Ductile Iron

Materials of Construction

  • Acuator Rod, Clevis, Indicator Pointer, Spring Retainer: Carbon Steel
  • Attention Plate: Mylar
  • Diaphragm Retainer: UHMW Polyethylene
  • Driver Arm, Diaphragm Retainer: Ductile Iron
  • Lining: Acetal
  • Washer, NTP Adapter, Breather, Diaphragm Washer: Stainless Steel

Media

  • Air
  • Gas
  • Oil
  • Water

Mounting

  • Bottom Mounting
  • Top Mounting

Mounting Position

  • Actuator Driver: Horizontal
  • Diaphragm Casing: Vertical

Name Plate, Tag Material

  • Mylar
  • Stainless Steel

NPT Connection

  • 3/8” NPT Female

Nut & Bolt Material

  • Hex Jam,Nylon Insert Lock Nut: Stainless Steel

Operating Pressure

  • psi: 100 (kPa: 700, bar: 7) - Max.

Operation

  • Manual Operation

Override

  • Jackscrew Manual Override

Pressure Range

  • Design - psi: 160 (kPa: 1,100, bar: 11) - Max.

Ring Material

  • Retaining: Stainless Steel

Screw Material

  • Hex Head Cap, Socket Head Cap, Set: Stainless Steel
  • Shoulder: Carbon Steel

Speed

  • 2 to 3 seconds

Spring Material

  • Compression: Carbon Steel

Spring Range

  • psi: 20 to 80 (kPa: 138 to 550, bar: 1.3 to 5.5)

Temperature Range

  • -29° to 66° C (-20° to 150° F)

Torque

  • 15 to 796 Nm (132.8 to 7,045 In/Lbs)

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