ACTUATORS

General Features
Local & Remote Control (Standard), ESD, Emergency Reservoir, Partial Stroke Test (Optional)

Usage Areas
Pipelines, Iron & Steel, Energy Facilities, Drinking Water Lines, Compressor Stations, Pumping Stations, Pressure Reducing Station

Linear Pneumatic Actuators
These are used for automation of Globe, Gate and Control Valves by means of pneumatic piston. Opening and closing of valve obturator are maintained by pneumatic power. Control devices for such actuators are designed depending on application fields. Spring Return or Double Acting types of Linear Pneumatic Actuators are available, too.

Quarter Turn Pneumatic Actuators
Vastas prefers the Quarter Turn Actuators with canted scotch yoke mechanism, which provides torque advantage when critical torques are required. They may be designed & produced as Spring Return or Double Acting Type.

Linear Hydraulic Actuators
These are used for automation of Globe, Gate and Control Valves by means of hydraulic piston. Opening and closing of valve obturator are maintained by hydraulic power. Control devices for such actuators are designed depending on application fields. Spring Return or Double Acting types of Linear Hydraulic Actuators are available, too.

Quarter Turn Hydraulic Actuators
Vastas prefers the Quarter Turn Actuators with canted scotch yoke mechanism, which provides torque advantage when critical torques are required. Open/close motions of valve is provided by hydraulic piston power and spring power. Close with spring or open with spring types are manufactured. When high torque is required, they may be produced as double acting. They have smaller piston diameter but higher pressure output than similar pneumatic actuators.

Gas Over Hydraulic Actuators
These are designed for use in Natural Gas Pipelines, working with line pressure. They can automatically operate under each weather condition where no personnel and electric energy are present. Various types are offered depending on application, pressure fluctuation, climate and field conditions, etc.

Electro Hydraulic Actuators
Electro Hydraulic Actuators with canted scotch yoke mechanism, which provides torque advantage when critical torque is required and may be produced as double acting. Alternative energy sources can be added upon request. They can operate using the energy, collected in the reservoir tanks.

PNEUMATIC ACTUATORS.
Working pressure: 6-12 Bar
Temperature range: -29°C to +80°C (-49°C upon request)

GP AP
Pneumatic Double Acting Actuator
Working Pressure: 4-12 Bar (Air, Nitrogen, NG)
Exproof Protection
IP Protection
-29 to +80 Working Temperature
24,48,110 V AC/DC Control Voltage
Optional Manual Hand Wheel

GC AC
Pneumatic Single Acting Spring Return Fail Close Actuator
Working Pressure: 4-12 Bar (Air, Nitrogen, NG)
Exproof Protection
IP Protection
-29 to +80 Working Temperature
Optional Manual Hand Wheel
24,48,110 V AC/DC Control Voltage
Manual Hand Wheel or Gearbox connections optional

GN AN
Pneumatic Single Acting Spring Return Fail Open Actuator
Working Pressure Max. 4 to 16 Bar (Air, Nitrogen, NG)
Exproof Protection
IP Protection
-29 to +80 Working Temperature
24, 48,110 V AC/DC Control Voltage
Optional Manual Hand Wheel or Gearbox

GT AT
Tandem Pneumatic & Hydraulic Double Acting Actuator
Working Pressure Hydraulic: 20 to 350 Bar (Hydraulic Oil, Pneumatic 4 to 12 Bar Air, Nitrogen, NG)
Manual Hand Pump, Hand-wheel or Gearbox connection possible.
Standard 400 VAC Energy Supply
Working in different voltage supplies is optional
Exproof Protection
Works through the actuator or external Hydraulic Power Pack
-29 to +80 Working Temperature
24, 48,110 V AC/DC Control Voltage
IP Protection

GH AK
High Pressure Gas Single Acting Spring Return Fail Close Actuator
Working Pressure Max. 16 to 120 Bar (Nitrogen, NG)
Exproof Protection
IP Protection
-29 to +80 Working Temperature
24,48,110 V AC/DC Control Voltage
Optional Manual Hand Wheel or Gearbox

GR AR
High Pressure Gas Single Acting Spring Return Fail Open Actuator
Working Pressure Max.16 to 120 Bar (Nitrogen, NG)
Exproof Protection
IP Protection
-29 to 80 Working Temperature
24,48,110 V AC/DC Control Voltage
Optional Manual Hand Wheel or Gearbox

For further information contact us by email  , or by using the Contact Form

HYDRAULIC ACTUATORS.
Working pressure: 20-350 Bar
Temperature range: -29°C to +80°C (-60°C upon request)

GO AO
Gas Over Hydraulic Actuator
Working Pressure: 10-120 Bar
-29 to +80 Working Temperature
-60 Working Temperature (Available upon request)
It can be used as Line Break System
It can be used as Emergency Shut Down System

GD AD
Double Acting Hydraulic Linear or Quarter Turn Hydraulic Actuators
Working Pressure: 20-350 Bar
Hydraulic Oil
Working in different voltage supplies is optional
Manual Hand Pump
IExproof Protection
IP Protection
-29 to +80 working temperature
24, 48,110 V AC/DC Control Voltage
Works through the actuator or external
Hydraulic Power Pack
-60 Working Temperature (Available upon request)

GS AS
Safety Shut-Off Valve & Actuator System for High and/or Low Pressure Close
Working Pressure: 10-112 Bar
-29 to +80 Working Temperature
-60 working temperature (Available upon request)
150-300-600 Pressure Class (Available upon request)

GI AI
High Pressure Gas Double Acting Actuator System
Working Pressure: 16-120 Bar
-29 to +80 Working Temperature
-60 Working Temperature (Available upon request)
150-300-600 Pressure Class (Available upon request)

GL AL
Electro Hydraulic Single Acting Spring Return Fail Close
Working Pressure: 20 to 350 Bar (Hydraulic Oil)
Standard 400 VAC Energy Supply
Exproof Protection
IP Protection
Working in different voltage supplies is optional
-29 to +80 Working Temperature
24,48,110 V AC/DC Control Voltage
Manual Hand Wheel or Gearbox (Manual Hand Pump optional)
Works through the actuator or external Hydraulic Power Pack

GF AF
Electro Hydraulic Single Acting Spring Return Fail Open Actuator
Working Pressure: 20 to 350 Bar, Hydraulic Oil
Standard 400 VAC Energy Supply
Working in different voltage supplies is optional
Exproof Protection
IP Protection
24,48,110 V AC/DC Control Voltage
-29 to 80 Working Temperature
Manual Hand Wheel or Gearbox (Manual Hand Pump optional)
Works through the actuator or external Hydraulic Power Pack

GM AM
Manual Hydraulic Double Acting Actuator
Working Pressure: 20 to 350 Bar Hydraulic Oil
Works with Manual Hand Pump
Exproof Protection
IP Protection
Works with Manual Handwheel Manual Gearbox
-29 to +80 Working Temperature
24, 48,110 V AC/DC Control Voltage