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pvd ltd. şti. established in 1985, serves lots
of industrial establishments in and out of the
country by producing, exporting and importing.
In addition to our Automatic Valves and
Pneumatic Rotary Actuators, whic are our main
products, we introduce lots of products of the
firms we represent to the buyers.
At the moment pvd, which continues its
activities in a factory building of 1200 m²,
granted with a ISO 9001 certificate in 2003 and
CE woks in progress, continuosly enlarges its
service net with more than 30 domestic
pvd Pneumatic Actuators, are powerful, reliable
and compact double rack and pinion units for use
with ball, butterfly and plug valves and device
requiring accurate fast or slow or proportional
90° turn motion.
pvd Pneumatic Actuators are manufactured in
different sizes. Both double-acting and single
acting spring return type. Because of the rack
and pinion units, tork value is constant in
complete movement.
Besides standart manufacturing program,
optionally pneumatic actuators can be
manufactured with ± 10 % stroke adjustment, 180°
turn and 3 position types.
As an accessory solenoid valve, limit switch (mechanical
or proximity type) positioner (pneumatic or
electro-pneumatic) can be installed over
actuators optionally.
DOUBLE ACTING 90° ROTARY PNEUMATIC ACTUATORS
SINGLE ACTING 90° ROTARY PNEUMATIC ACTUATORS
3 POSITON PNEUMATIC ACTUATORS
180° TURN PNEUMATIC ACTUATORS
PNEUMATIC ACTUATORS WITH ADJUSTMENT SCREW
PNEUMATIC ACTUATORS WITH HYDRAULIC SPEED CONTROL
Solenoid valves are operated with the power of
electric and used almost everywhere where the
fluids are controlled automatically. Parallel to
the technologic development it fields of usage
have been increasing.
Solenoid valves have been derived from the
principal that a magnetic field, forced by the
electric energy with the help of a coil, moves
some mechanical parts.
Depending on the project Solenoid Calves can be
produced with 2 or more ways and in different
sizes. Also the electric supply can be 6, 12i
24, 48, 72, 110, 220 V AC or DC according to
project.
In Solenoid Valves the widenly used body
material is brass, but stainless steel, bronze,
cast iron, steel or plastic body valves can be
produced as well.
According to working principle Solenoid Valves
can be classified into two main groups as "Direct
Acting" and pilot operated. Besides, these
valves can be classified according to fluid
types. Apart from these Solenoid Valves can be
designed as on or off when electricity is on.
This is mentioned as the valve is Normally Open
or Normally Closed.
GENERAL PURPOSE SOLENOID VALVES
STEAM SOLENOID VALVES
LOW PRESSURE AND VACUM SOLENOID VALVES
FUEL SOLENOID VALVES
SOLENOID VALVES FOR COMPRESSOR
SOLENOID VALVES WITH TIMER
STAINLESS STEEL SOLENOID VALVES
SPECIAL GROUP SOLENOID VALVES
SPECIAL HOLDING SOLENOID
SPECIAL PURPOSE SOLENOID VALVES
Definition: pvd dust bag shaker valves are
designed for the systems that discharges
pressured air swift and produce air strokes as
shock. It operates in the same way with other 2
way solenoid valves. But input and output
connections are perpendicular (90?) to each
other. So it sends air as stroke (shock) and it
is also called Air Shock (Jet Filter) valve.
Application Areas: pvd dust bag shaker valve
area used in Cement, Ceramic, Drying, Thermic
Power Plants, Concrete Centrals, Detergent,
Glass, Iron & Steel, Chemistry and Food &
Beverage sectors for shaking accumulated dust
and for protecting the bunkers against dust
sedimentation.
Application: pvd dust bag shaker valve can be
mounted to system with coil or without coil. It
affects more than one dust bag (filter bag) with
the help of a collector. It can also be mounted
on filter directly.
pvd dust bag shaker valve can be seperated into
two parts, valve body and coil that commands
valve. This type of assembly supplies the
isolation of coil against water, dust and any
kind of corrosive fluids. Electrical connection
is mounted on a place far from valve body in
this type of assembly. Coils are settled in a
aluminium command box and connect to valves
command input with an air tube.
pvd dust bag shaker valves can be controlled by
pvd timers. Timers can be produced in a
protective command box with 1...99 output.
Operating and waiting time of valve can be
adjusted according to the user by timer.
OPERATING PRINCIPLES
pvd dust bag shaker valves have diaphragms. They
can not execute on-off operations if the line
does not has enough differential pressure like
other solenoid valves with diaphragm.
Differential pressure, applied to input of valve,
shouuld be minimum 0.5 bar.
pvd dust bag shaker valves are Normally Closed.
They become "Open" if they operate. Operation is
completed by giving energy to coil for 100-150
miliseconds. Waiting time can be adjusted by
administrator. Keeping operating time longer
than 200 miliseconds does not have any advantage.
Optimum and economic operating time, 100-150
milisecods, reduce air consumption.
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