Actuated valves
Pneumatic and electric actuated ball valves and butterfly valves; single and double acting, with brass, stainless steel and cast bodies; automation ready with limit switch box, positioner and NAMUR valve.
Driving a valve with an actuator is the way to open and close a line remotely, automatically and safely. In automation projects we select the valve for the fluid and the actuator for the valve torque, and supply them ready for control with a limit switch box, NAMUR solenoid valve and positioner. We ship actuated valves from stock across Türkiye and abroad, and also sell them through hidroticaret.com, our online store (Turkish).
Types
Actuated ball valves
Two-way ball valve with pneumatic actuator; pressure drop is almost negligible when fully open, making it the first choice for on/off duty.
Actuated three-way valves
Diverts flow between two lines or combines two lines; L-port and T-port types.
Actuated butterfly valves
A light and economical solution for large diameter water and air lines; the disc opens and closes with a quarter turn.
Electric actuated valves
Opens and closes the valve with an electric motor where compressed air is not available.
Automation accessories
Limit switch box (position feedback), NAMUR solenoid valve (supplies air to the actuator) and positioner (intermediate position control).
Product images: hidroticaret.com and manufacturers.
How to select
Selection starts with the valve: body material according to the fluid (brass for water and air, stainless steel for food and chemicals, cast body for large diameters), connection type, pressure rating and temperature. The actuator is then sized for the breakaway torque of the valve; torque increases on dirty, sticky or rarely operated lines, so the actuator is selected with a safety margin.
The control type determines the safety of the plant. A single acting (spring return) actuator moves the valve to its safe position (closed or open) by itself when air or power fails. A double acting actuator is driven by air in both directions and stays in its last position when energy is lost.
Valve and actuator are joined through the ISO 5211 mounting flange; if the flange type and stem size match, a valve and an actuator from different manufacturers can be coupled. The table below lists the flange types. When an actuator is added to an existing valve, the top flange and stem size of the valve are checked first.
ISO 5211 mounting flanges
| Flange type | Bolt circle diameter |
|---|---|
| F03 | 36 mm |
| F04 | 42 mm |
| F05 | 50 mm |
| F07 | 70 mm |
| F10 | 102 mm |
| F12 | 125 mm |
| F14 | 140 mm |
A valve usually has two flange drilling patterns (for example F05/F07). In addition to the flange, the stem shape (square or double D) and size must also match.
Frequently asked questions
Should I choose a single acting or double acting actuator?
Single acting if the valve must close (or open) by itself when air or power fails; double acting if staying in the last position on loss of energy is acceptable.
How do I size a valve actuator?
From the breakaway torque of the valve and the air pressure. Torque increases on dirty, sticky or rarely operated lines, so the actuator is selected with a safety margin.
Can an actuator be fitted to my existing valve?
Yes, if the top flange of the valve complies with ISO 5211 and the stem size matches. If not, a mounting adapter is used.
What is a NAMUR valve?
It is a solenoid valve that mounts directly on the actuator and supplies it with air; the mounting interface is standardized.
How does the control system know whether the valve is open or closed?
The limit switch box reports the end positions of the valve with an electrical signal.
Can you select the valve and actuator together for our automation project?
Yes. Just tell us the fluid, size, pressure and control type; we work out the matching valve, actuator and accessories.
Stock, sizes and part numbers
Sizes in stock, manufacturer part numbers and brands are kept up to date in our catalog. Send us your requirement on WhatsApp or by e-mail and we will quote and ship worldwide.