Kinetrol is pleased to introduce the new D-line damped lever operated manual fail safe. Addressing a safety-critical gap in the market and expanding their range of failsafe units, these damped manual failsafe units are fully compliant with the machinery directives and unlike anything else on the market.

The D-line has been specifically designed to slow down the manual handle’s movement on the return stroke, ensuring the stored energy in the spring is safely dissipated. This allows manual operation of Kinetrol springs on sizes not previously possible safely.

The use of Kinetrol’s highly reliable, low stress, clock type spring linked to a torque multiplier allows effortless manual operation of a valve in a compact space.

Features and Benefits:

  • Manual unit, cannot be left in wrong position
  • 180° lever input & 90° spring return
  • Locking facility using a padlock (padlock additional adder)
  • ATEX approved as standard
  • 4 models available (07, 08, 09 & 10)
  • Reliable torque delivery for valve reseat
  • All units sealed to IP65 to protect from internal corrosion
  • Safe and easy manual lever operation using Kinetrol’s proven torque multiplier and energy dissipating rotary dashpot.

Application Damped lever operated manual fail-safe units are available in Kinetrol sizes 07 to 10 with torques from 42Nm to 143Nm (375 lbs.ins to 1270 lbf.ins).

D-line units are available for either clockwise or counter clockwise spring action and the direction of the unit is determined by looking from above with the mounting interface on the bottom.

Suffix – M20 = clockwise Suffix – M30 = counter clockwise.

Materials of construction:

  • Spring case 61.75 … Diecast aluminium alloy – epoxy stove enamel coating
  • Clock type spring … Carbon spring steel
  • Torque multiplier … Diecast aluminium alloy – epoxy stove enamel coating
  • Energy dissipating dashpots … Zinc alloy
  • Shafts … Stainless steel or zinc plated carbon steel
  • Locking plate … Mild steel – epoxy stove and enamel coating
  • Manual lever … Stainless steel
  • Operating temperature … -40°C to 80°C (-40°F to 176°F)


Zjaan Haarhoff  / Andre Anker


Tel. +27 11 708 6455 /



Share this article