Valves & Actuators

Vastas API 6D and API 6A Ball Valves are used at various onshore and offshore projects, aboveground and underground applications. They are generally used between -46°C up to 120°C.

Vastas Ball Valves are SIL (Safety Integrity Level) certified. When required it can be manufactured from special material according to NACE corrosion standards and/or temperature class. Conformity to MR0175 requirements and PSL2 Level can be obtained.

Vastas Gate Valves are API 6D and API 600 licensed. They are preferred as closure(shut-down) valves and suitable as line valves. Safety Integrity Level (SIL) certified. When required it can be manufactured from special material according to NACE corrosion standards and/or temperature.

Upon request, it can be manufactured in bigger sizes and from various materials. Custom-made wedge gate valves are manufactured to meet the requirements for high-pressure water, sea-water and waste-water systems. Conduit gate valves are suitable as line valves. Like Ball Valves, they have DBB, FB, ASD, FSD, SLS, ESL features. They are suitable for pig transmission too. They can be used both for above-ground and underground applications.

These types of valves are mostly forged steel. The body of valve is constructed by welding of all parts except stem housing. No sealing elements are used which might cause leakage through.

Vastas Valves are produced with steel body and stainless trim (API Trim no 8 as standard). End fittings are designed as NPT according to ASME B1.20.1. According to customer request Vastas valves can be produced with butt welded end according to ASME B16.25 or with socket welded end according to ASME B16.11 with flanged ends according to ASME B16.5. In this case FTF Dimension is complying with ASME B16.10 standard. When required it can be manufactured from special material according to NACE corrosion standards and/or temperature class.

This is a non-return type valve for preventing back flow. Upon request, the manual closing speed option can be obtained through dash-pot. It can be manufactured from special material according to NACE corrosion standards and/or temperature class.

Vastas API 6D Check Valves are used at various onshore and offshore projects, It is a full bore valve, suitable for the pig transition. It is used as line valve in natural gas and crude oil pipelines and also used in Pig Stations, Compressor & Metering Stations, Regulating & Metering Stations, Pumping and Filling Stations.

These types of valves are mostly forged steel. The body of valve is constructed by welding of all parts except stem housing. No sealing elements are used which might cause leakage through.

Vastas Valves are produced with steel body and stainless trim (API Trim no 8 as standard). End fittings are designed as NPT according to ASME B1.20.1. According to customer request Vastas valves can be produced with butt welded end according to ASME B16.25 or with socket welded end according to ASME B16.11 with flanged ends according to ASME B16.5. In this case FTF Dimension is complying with ASME B16.10 standard. When required it can be manufactured from special material according to NACE corrosion standards and/or temperature class.

Globe Valves are commonly used for flow control. They are used for regulating and throttling at various pressures or flow rates and can suit to lines with frequently on/off operations.

The advantage of Globe valves is; they operate smoothly even during sudden opening/closing operations at the line. They are not affected by shocks and vibrations created by the flowing fluid. They do not generally require by-pass systems.

SIL 2 & 3 certified. When required, it can be manufactured from special material according to NACE corrosion standards and/or temperature class.

As a designing and manufacturing company we are not limited with the product range, we offer tailor made valve and actuators solutions as well.

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 usage 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.