General Features:
Compact design in double-acting or spring-return
Contained spring module for safety and convenience
Valve mounting dimensions per ISO 5211/DIN 3337
Pre-tensioned springs for safety
Connections according to international standards
Scotch yoke design provides high torque in the end positions
Three-year warranty
High efficiency, low air consumption
Housing in anodised aluminium
Standard temperature range -20°C to +80°C (-4°F to +175°F)
Actuators certified in accordance with PED 2014/68/EU
Actuators certified to ATEX 2014/34/EU
Certified suitable for use at SIL3 as a single device (IEC 61508)
Options:
M1 handwheel manual override
Adjustable travel stops in both directions
High temp. 0°C to +150°C (+32°F to +300°F)
Low temp. -40°C to +60°C (-40°F to +140°F)
Arctic temp. -47°C to +80°C (-52°F to +175°F)
Water or oil hydraulics
Over travel
RC-SR (single acting)-spring return pneumatic actuators:
The cylinders' pistons move due to the presence of air pressure inside the cylinder. Pressure works against the springs. Springs are mounted in separate cartridges at the end of the cylinders.
In case of air supply loss, springs' force either open or close the actuated valves.
1, Fail to safe OPEN valve position: RC-SRF actuators
2, Fail to safe CLOSE valve postion: RC-SR actuators
Depending on sizes either one or two spring cartridges/ housings are mounted on the cylinders.
a, RC210-230-250-270 means 1 pc of spring cartridge (or housing)
b, RC220-240-260-265-280 means 2 pcs of spring cartridge (or housing)
Main features:
Small overall sizes and meantime quite high output torque performance
In case of using emergency manual override solution, the whole unit has the most feasible install place
More economical instrument air consume comparing with same sized unit by rack-and-pinion mechanism and in case of same working conditions.
Available sizes: RC210-RC280-SR (or -SRF in case of fail safe to OPEN)
Valve ISO top-flange sizes: F05/F07 (RC210)-F12/F16 (RC280) acc. to ISO 5211 standard
Stroke time: for RC210-RC250 ~ 1,1 - 13 sec (in case presence of 6,0 bar(g) instrument air)
CE, PED, ATEX as standard supplemantary documents for each project
SIL2 and SIL3 are availabel upon request based on guidelines of IEC 61508
Guarantee for 36 months (3 years)
Working Pressure: min. 2,0 - max. 10,0 bar (30-145 psi)
Output Torque Performance: 4 400 Nm-ig (39 000 lbf.in) at the most;
For RC-SR ~ 2 400 Nm-ig (7,0 bar; RC280 SR) by fail to safe CLOSE valves
For RC-SRF : ~ 2 500 Nm-ig (7,0 bar; RC280 SRF) by fail to safe OPEN valves
Ambient temperature: -20 .. + 80 °C / High temperature designs up to +150°C/ low temperature designs down to -47 °C
By Namur and ISO connection interfaces for soleonid valves and limit switch boxes according to ISO 5211, NAMUR, DIN 3337
Working fluid: inert gas, or filtered and dry instrument air based on provisions PED 97/23/EC for non-dangerous fluids Group 2
By emergency manual handwheel (-SRM; -SRFM; or RC-M1 in general), hw can be padlocked both in open and close position
Handwheel has a NEUTRAL position. By setting this the actuator can be operated pneumatically
SR and SRF actuators' output torque have a little difference at each sizes
Accessories: limit switch boxes, 3/2-5/2 soleonid valves, positioners
