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PVD PRODUCTS

  • Solenoid Valves

  • Dust Bag Shaker Valves
  • Pneumatic Actuators
  • Electric Actuators
  • Pneumatic Piston Operated Valves
  • PVD Filter (Strainer)
  • Positioners

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PVD PNEUMATIC ACTUATORS, SOLENOID VALVES

 

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.
 

 

PVD Products
 

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