RTC single/double acting pneumatic actuators, are suitable for the operation of quarter turn valves (ball valves, butterfly valves and plug valves) for on-off and modulating heavy-duty service.
The actuator is made up of a waterproof scotch yoke mechanism transforming the linear movement of the pneumatic cylinder (on closing or opening) into the rotary movement, which is necessary for valve operation. Scotch yoke mechanism centerbody cover is machined to provide the assembly pattern for any required accessories (for example positioner, signaling limit swiches, etc.) by mean of proper matching units. The above mentioned accessories are operated by the actuator drive sleeve.
Actuator centerbody bottom wall is machined with threaded holes to allow actuator mounting on top of valve top-work either directly or, when required, with the interposition of an adaptor flange or a mounting bracket. The travel stroke is adjustable between -4 deg/+4 deg at both ends by mean of the external mechanical stops arranged into the side-wall of the mechanism body and into the end flange of the pneumatic cylinder.
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Operating pressure Pneumatic version up to 12 barg (special version available on request) |
Standard operating temperature -30°C to 100°C (lower or higher temperature on request) |
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Output torque From 40 Nm up to 6.000 Nm (for double acting version) |
Spring Ending Torque From 40 Nm up to 2.500 Nm (for single acting version) |
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Certifications/approvals PED 2014/68/EU ATEX 2014/34/EU EAC TR TS 012/2011 MACHINERY DIRECTIVE 2006/42/EC IP66/67M according to IEC/EN 60529 SIL3 certified (IEC 61508) as a “single device” Designed and tested in accordance with EN 15714-3 (further certifications are available, please contact us for updated list) |
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