The NIBCO® 2000 Series pneumatic actuator features a patented spring design and a durable anodized extruded aluminum body. They are specifically designed for quarter-turn applications, including ball valves, butterfly valves, dampers and plug valves. NIBCO pneumatic actuators are manufactured in a wide range of output torques to fit the characteristics of the valve application. They are designed for either on-off duty, modulation or proportional control in industries ranging from chemical processing and pulp and paper, to petroleum refining, production industries, marine applications, and commercial construction applications. NIBCO® 2000 Series pneumatic actuators offer exceptional starting and ending torque in a compact design. They consistently meet the demand for high torque, even in applications where the valve has been closed for an extended period. Engineered for a long, lubrication-free service life, NSR actuators combine O-rings and PTFE seals to create a durable, low-friction seal. Pneumatic accessories include three and four way solenoids, switch box with limit switches and beacon, positioners for air or electric signal throttling service and speed controls.Engineered with a modular approach, NIBCO® pneumatic actuation systems offer the flexibility to actuate new valves or to retrofit existing valves with unprecedented ease. Pneumatic actuation systems feature an ISO standard mounting design, assuring long-term industry acceptance.Features:Durable extruded anodized aluminum housingUnique 3-point load bearing design for smooth operationTwin guide bars on pistons assure optimum rack and pinion engagementOne-piece solid steel shaftEpoxy coated end capsISO 5211 or NIBCO direct mount dimensionsNAMUR standard accessory mounting dimensionsUNC tapping.