R.K. CONTROL INSTRUMENTS PVT. LTD.

Wagle Estate, Thane, Maharashtra

RK AIR LOCK is a reliable unit for achieving stay-put condition of control valves, on air supply failure. The air pressure is blocked inside the diaphragm chamber (or piston cylinder) of the actuator, when the supply air pressure falls below the desired set valve. Quality materials are used and each unit is pressure and leak tested, to ensure long and trouble free operation.

RK VOLUME BOOSTERS are normally used to reproduce pneumatic signals in 1:1 ratio whenever input isolation or increased flow capacity is required. These high capicity Volume Booster, with a fixed minimum deadband, are designed to substantially improve the stroking speed of large actuators. Actuators retain their normal slow and stable responses as long as their signal fluctuations remain within the deadband limits that are determined by adjustment of the equalizing bypass valve within the Booster.High stability which allow normal slow actuator response to slow signal changes, Capable of using high pressure plant air supply.

DIAPHRAGM VALVES are used for application involving slurries, suspended solids, viscous or corrosive services or where tight closure (Bubble Tight Shut Off) is a prime factor. While primarily designed for on-off services, it will provide proportional control action when used with a positioner.

Pressure Ratings: ASME 125 to 150

Application: Used in various types of industries, water treatment, thermal power, nuclear power, food and beverages, mining, petrochemical, refineries, fertilisers, steel, sugar etc.

RK VOLUME BOOSTERS are normally used to reproduce pneumatic signals in 1:1 ratio whenever input isolation or increased flow capacity is required. These high capicity Volume Booster, with a fixed minimum deadband, are designed to substantially improve the stroking speed of large actuators. Actuators retain their normal slow and stable responses as long as their signal fluctuations remain within the deadband limits that are determined by adjustment of the equalizing / bypass valve within the Booster.

Application : To reduce the response time, particularly of large actuator.

Features:

• Quick response with increeased actuator stroking speeds
• Maintains correct actuator postioning at high stroking speeds
• Adjustable by pass valve provides good operational sensitivity
• High stability which allow normal slow actuator response to slow signal changes
• Capable of using high pressure plant air supply
• Different Booster sizes available to suit wide range of actuator sizes
• Main internal air supply valve with Soft seat insert for tight shut off
• Highly corrosion resistant with external stainless steel retaining screws and internal wear parts
• Stainless Steel and Aluminium construction available

Sizes : 38 to 600 sq.in, Spring & Diaphragm Actuator 10 dia. to 24 dia. Piston Actuator

Features : 10" dia piston type(Double Acting/Single Acting)

• Linear Stroke
• Single Acting or Double Acting
• Multi spring actuator option for compactness
• High power
• Fast response
• Low hysterisis
• Field reversible
• Flexibility in selection of Springs
• Manual overide optional - Top Mounted or Side Mounted