Pneumatic Diaphragm Actuated Valve
Pneumatic Diaphragm Actuated Valve 1860 Series
The Pneumatic Diaphragm Actuated Valve is designed to provide reliable linear actuation for diaphragm valves used in ON–OFF and modulating flow control applications. Operated by compressed air, the actuator delivers quick response, smooth motion, and high cycle life, making it ideal for demanding industrial and process environments.
When paired with straight-through or weir type diaphragm valves, the pneumatic diaphragm actuator ensures accurate flow regulation, tight shut-off, and safe operation, even in corrosive, abrasive, or slurry services. Spring-return configurations offer fail-safe action, automatically moving the valve to a predefined safe position during air supply failure.
Technical Specifications
Parameter
Sizes
15mm to 350mm
Actuator Type
Pneumatic Linear Diaphragm Actuator
Operation
ON–OFF / Modulating
Actuator Modes
Spring Return (Fail-Safe) Double Acting
Air Supply Pressure
3.0 – 7.0 bar (application dependent)
Mounting
Direct mounting on diaphragm valve
Applicable Valve Types
Straight Through Diaphragm Valves Weir Type Diaphragm Valves
Control Signal (with Positioner)
3–15 psi 4–20 mA via I/P converter
Design & Construction:
Robust pneumatic diaphragm actuator with linear motion mechanism ensures fast response, reliable positioning, and stable performance in harsh industrial environments.
Working Principle:
Open Position
Air pressure lifts actuator diaphragm raising valve stem
Closed Position
Spring force or reverse air pressure presses diaphragm onto seat
Modulating Control
Positioner maintains intermediate positions for precise flow regulation
Automation & Control Options:
- Air Control: Solenoid Valves (3/2, 5/2), FRL Unit (Filter Regulator Lubricator)
- Feedback Systems: Limit Switch Box, Position Transmitter
- Actuator Types: Spring Return (Fail-Safe), Double Acting
Key Features & Advantages
- Fast and responsive pneumatic operation
- Linear motion for accurate control
- Fail-safe spring return option
- High cycle life for frequent operation
- Simple and rugged construction
- Suitable for harsh industrial environments
- Low maintenance requirements
Optional Accessories:
- Pneumatic valve positioner
- Electro-pneumatic positioner
- I/P converter
- Air Filter Regulator (FRL unit)
- Limit switch box
- Position transmitter
- Solenoid valve (3-way / 5-way)
- Local control accessories
Industries Served
Chemical processing plants
Water & wastewater treatment
Pharmaceutical and biotech industries
Pulp & paper processing
Typical Applications:
Slurry handling, acid & alkali services, corrosive media flow control, hygienic processing lines, and automated industrial diaphragm valve systems.
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