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IMI STI
AL - Air-lock 101 Device
Compact air-lock device isolating pneumatic actuators when pressure drops, ensuring system stability.
Prevents actuator instability by isolating it from the control system when pressure drops.
Compact, lightweight unit integrates dual 3-way valves to save space and installation time.
Automatically resets when pressure normalises, enhancing reliability and system efficiency.
Features
The IMI Air-Lock (AL) Device isolates pneumatic actuators from control devices when air pressure falls below a set point. It features an adjustable pressure switch and dual 3-way valves in a single unit. The device activates instantly upon pressure loss and resets automatically when pressure rises by 1 bar. Available in anodised aluminium or stainless steel 316, it offers reliable performance in various conditions, including offshore and sandstorm environments. Its compact design reduces installation time, space, and cost, ensuring seamless integration into actuator systems where maintaining control during pressure fluctuations is critical.
Key features
Works with single and double-acting actuators
Adjustable pressure switch with lockable set screw
Operating pressure: 2–10 bar
Temperature range: -40°C to 85°C
Available in aluminium (1kg) and stainless steel (2.5kg)
Input/output: 1/4” NPT, pilot signal: 1/8” NPT
Maximum CV: 1 (inlet/outlet)
Built-in dual 3-way valve system
Suitable for offshore and sandstorm conditions
Reduces installation time, space, and cost
Specifications
Ambient Temperature (°C)
-40 to 85
Port Size (")
0.25 to 0.25
Material
Anodised Aluminium
Stainless Steel 316
Operation
Pilot Operated
Port Options
NPT
Operating Pressure (bar)
2 to 7
Supply Medium
Pneumatic
Configuration
2 x 3/2 NC
Certification
ATEX
IECEx
Resources
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