AL: Air-lock 101 Smart IMI STI / FasTrakDevice Positioner AL: Air-lock 101 Device The Air-Lock pressure static device (model AL) is composed of a TP Pneumatic pressure switch (see page 30) combined with 2 x 3 way valves ND 1/4” (see page 16) in a single body. The Air-Lock pressure static device is mounted on pneumatic actuators when they need to be isolated from control devices (for example positioners or electro-pneumatic distributors) in the event air pressure falls below the pre-determined operating safety point. The Air-Lock device consists mainly of a pneumatic pressure switch with an adjustable set point. This device synchronously drives the 2 x 3 way valves. The switching device operates immediately, even in the case of a gradual air-pressure decrease to the set value. The device will automatically reset after a failure when the line pressure is 1 bar greater than set pressure, to avoid instability around the device set point. Key features > Suitable for: - Standard, offshore, sandstorm and copper-free ambient conditions - Single and double acting actuators - Low and high ambient temperature > Exclusive STI design for double 3 way valve in one body, to reduce assembly time, space and cost > mall dimension and lightweight S Benefits > ccurate pressure setting A > et screw lockable with nut S > ynchronous drive for set pressure group S + 2 x 3 way valve in one body > nsensitive to vibrations I > eset hysteresis with established safety R Aluminium (left) Stainless steel 316 (right)

Technical specifications Materials Pilot signal connection Output connections Operating temperature* Inlet = 1 Aluminium = 1kg -20°C to 70°C Outlet = 1 Stainless steel 316 = 2.5kg -20°C to 85°C available on request Operating pressure * Lower or higher temperature available on Feeding connections Operating = 7 bar Dimensional drawing