ACTUATORS - RP SERIES
Australian Pipeline Valve - Installation, Operation and Maintenance Manual
24
9 . 0 D E S I G N F E A T U R E S
Indicator
Position indicator with NAMUR
is convenient for mounting
accessories such as Limit Switch
box, Positioner and so on.
Pinion
The pinion is high-precision and
integrative, made by nickelled-
alloy steel, full conform to the
latest standards of ISO 521,
DIN33337, NAMUR.
The dimensions can be
customised and the stainless
steel is available.
Cylinder
According to the different
requirements, the extruded
aluminium alloy ASTM6005.
Body also optionally treated
with hard anodised powder
polyester paint. PTFE or Nickel
plated.
Ends Caps
Die-casting aluminium powder
polyester painted in different
colours, PTFE or Nickel plated.
O-Rings
NBR rubber O-rings provide
trouble-free operation at
standard temperature ranges.
For high and low temperature
applications Viton or Silicon.
Pistons
The twin rack pistons are made
from Die-casting aluminium
treated with hard anodised or
made from cast steel with
galvanisation, symmetric
mounting position, long cycle life
and fast operation, reversing
rotation by simply inverting the
pistons.
Travel adjustment
The two independent external
travel stop adjustment bolts can
adjust ±5° at both open and
close directions easily and
precisely.
High performance springs
Preloaded coating springs are
made from high quality material
for resistant to corrosion and
longer service life, which can be
demounted safely and
conveniently to satisfy different
requirements of torque by
changing quantity of springs.
Bearings & Guides
Made by low friction and longlife
compound material, avoid
the direct contacting between
metals.
