UT Series – Flanged Aluminum Actuators
The UT Series rack & pinion actuators are the original Max-Air innovation featuring a removable flange for easy valve integration, flexible customization, and reliable operation. The UT Series is the Max-Air standard for all 180° rotation units and provides NAMUR standard mounting for accessories, along with our patented ±10° adjustment for both the open and closed positions, all backed by the best unlimited cycle life warranty.
Features and Benefits
The MAX-AIR rack & pinion pneumatic actuator produces linear torque output in a compact design utilizing the same body and end caps for double-acting and spring-return units.
The standard angle of rotation is 90°. Additional travel rotations through 180° are available. For sizes from UT16 through UT76, Max-Air actuators feature dual travel stops that provide ± 10° stroke rotation on both the opening and closing phases of the actuator stroke. 110° of travel in a standard 90° actuator!
Extruded aluminum body is internally machined and honed to exact specifications. Honing prevents dry spots from forming within the actuator bore and therefore eliminates premature seal failure—a critical aspect to long cycle-life. All internal and external surfaces are hard anodized for corrosion resistance, with all units permanently lubricated at the factory.
Shaft bearings isolate the pinion gear from the housing and support the shaft for high-cycle applications. Many competitive manufacturers do not provide this critical feature.
Pistons incorporate double wear pads (skates) to separate the rack from the actuator wall and serve as both guide and wear bearings.
The pinion teeth are engaged the full length and stroke of the piston, and designed for the toughest flow conditions. The pinion height allows manual override without needing to remove the indicator.
The female pinion drive is standard with a double-square output drive, and optional with a double-D drive, keyed drive and designs to meet your specific requirements.
Namur VDI/VDE 3845 and ISO 5211 dimensions on all sizes. No special blocks are required to mount solenoid valves, limit switches or positioners.
External open/close indicator as standard, available for all rotations.
Epoxy-coated special steel springs are pre-loaded with non- metallic materials. The stainless steel end-cap fasteners are extra-long to allow for spring relaxation. All parts are corrosion-resistant.
Air pressure operation from 40 to 150 psi (2 to 10 Bar). Water, nitrogen and compatible hydraulic fluids may also be used to power the actuator.
All external fasteners are corrosion-resistant stainless steel.
Max-Air offers a wide range of adapters for many different types of valves—including butterfly valves, ball valves and plug valves—as well as a variety of pneumatic and electric automation accessories suitable for diverse industrial environments.
100% of all units are factory pressure and leak tested, and individually boxed for shipment.
All units are externally marked with a progressive traceable serial number.
Max-Air products are covered by our unlimited cycle-life warranty. Contact your local distributor or sales representative for more details.