6 VBC 20 EN • 11/2018 SERIES VBC PNEUMATIC CYLINDER ACTUATORS Metso`s Neles series VBC actuators are developed for linear valves. The VBC double acting cylinder type actuators are designed for use in both modulating control and on-off service. They provide heavy duty and reliable operation and are well suited for many different kind of applications. The high performance internal coating resists wear and corrosion and the replaceable inner parts guarantee a long life cycle. When "stay put" failure mode is required, a double acting actuator with lock up valve is the correct choice. If another failure mode is required, a double acting actuator with transfer valve and a volume tank should be selected. The series VBC pneumatic cylinder actuators offer a built-in volume chamber or independent volume tank to provide failure in either the open or closed position. The built-in volume chamber provides minimum one time stroking when the instrument air fails. Construction □ Heavy duty actuator designed for linear modulating control and on/off applications. □ Heavy duty piston rod and cylinder are guided by anti- corrosive cylinder with self lubricating piston seal which ensures efficient operation and improves the transfer of energy to the valve stem. □ The actuators incorporate three stages of internal and external corrosion resistance coating against severe weather, chemical and petroleum environments. □ Optional handwheel for manual operation. □ Optional volume tank or built-in volume chamber. Simple and cost effective A specially designed piston and cylinder in the main actu- ator drive module ensures simple and accurate alignment of modules when assembling the actuator or performing maintenance. High-and-low temperature construction The standard unit can be used in temperatures up to 70 °C (158 °F). High temperature construction is available for temperatures up to 120 °C (248 °F). The standard unit can be used down to -20 °C (-4 °F). A low temperature design is available for -40° to +70 °C (-40° to 158 °F ), arctic service please refer type coding. High cycle option For applications where very fast and high sequency operation is required. ATEX compatibility Actuator construction ATEX approved. Oversized cylinder options The oversized cylinders (VBC 60, 75, 602, 752) are used whenever the supply pressure is limited, thus the actua- tors can achieve the required torques with a lower supply pressure level. Accessories and control devices A variety of accessories are available including Neles posi- tioners and limit switches, solenoid valves, transducers, relays, boosters and volume tanks and built-in volume chambers etc.
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6 V
SERIES VBC PNEUMATIC CYLINDER ACTUATORS
Metso`s Neles series VBC actuators are developed for linear valves. The VBC double acting cylinder type actuators are designed for use in both modulating control and on-off service. They provideheavy duty and reliable operation and are well suited for many different kind of applications. The high performance internal coating resists wear and corrosion and the replaceable inner parts guarantee a long life cycle.When "stay put" failure mode is required, a double acting actuator with lock up valve is the correct choice. If another failure mode is required, a double acting actuator with transfer valve and a volume tank should be selected. The series VBC pneumatic cylinder actuators offer a built-in volume chamber or independent volume tank to provide failure in either the open or closed position. The built-in volume chamber provides minimum one time stroking when the instrument air fails.
Construction□ Heavy duty actuator designed for linear modulating
control and on/off applications.□ Heavy duty piston rod and cylinder are guided by anti-
corrosive cylinder with self lubricating piston sealwhich ensures efficient operation and improves thetransfer of energy to the valve stem.
□ The actuators incorporate three stages of internal andexternal corrosion resistance coating against severeweather, chemical and petroleum environments.
□ Optional handwheel for manual operation.□ Optional volume tank or built-in volume chamber.
Simple and cost effectiveA specially designed piston and cylinder in the main actu-ator drive module ensures simple and accurate alignmentof modules when assembling the actuator or performingmaintenance.
High-and-low temperature constructionThe standard unit can be used in temperatures up to 70 °C(158 °F). High temperature construction is available fortemperatures up to 120 °C (248 °F). The standard unit canbe used down to -20 °C (-4 °F). A low temperature designis available for -40° to +70 °C (-40° to 158 °F ), arctic serviceplease refer type coding.
BC 20 EN • 11
High cycle option For applications where very fast and high sequencyoperation is required.
ATEX compatibilityActuator construction ATEX approved.
Oversized cylinder optionsThe oversized cylinders (VBC 60, 75, 602, 752) are usedwhenever the supply pressure is limited, thus the actua-tors can achieve the required torques with a lower supplypressure level.
Accessories and control devicesA variety of accessories are available including Neles posi-tioners and limit switches, solenoid valves, transducers,relays, boosters and volume tanks and built-in volumechambers etc.
/2018
M E T S O
2
6 V B C 2 0 E N
VBC Cylinder actuators design details
VBC Specifications
Note:1. Maximum stroke: Available to extend according to the required specifications.2. The volume is based on above maximum stroke.3. The thrust values are not included other considerable factors.
VBC Stroking times
Note:1. Mounted with ND 9200 smart positioners and Air set only2. Case-1: when applied B72G-2AS-980 Air set
Case-2: when applied YT-200BN210 Air set3. Air supply pressure: 6.0 barg4. Stroking time accuracy: ± 10 %
VBC Temperature ranges
Note:1. Temperature: Ambient temperature2. Type code reference: Please see in page 13 (materials).3. Other low temperature range: Please contact Metso
VBC Air supply connections
Note:1. Maximum supply pressure: 10 bar / 145 psi
Actuator size
Piston dia.
Stem dia.
Effect Area VolumeActuator stem
size (Φ)Maximum
stroke
Thrust at Pressure Max. allowable pressurePressure Thrust
(mm) (mm) cm2 inch2 dm3 inch3 mm inch mm inch bar psi N lbs bar psi
#32 315 40 767 119 9.2 561.5 40 1.6 120 4.72
4 58 29136 6550
10 145
6 86 43704 9825
8.5 121 61915 13919
#40 400 50 1237 192 22.3 1358.8 55 2.2 180 7.09
4 58 47006 10567
6 86 70509 15851
8.5 121 99888 22456
#50 500 50 1944 301 35.0 2135.2 55 2.2 180 7.09
4 58 73867 16606
6 86 110800 24909
8.5 121 156967 35288
OTHER SIZES Contact Metso
SizeStroke (mm)
ND ModelStroking time(Sec.)
Load Vent Load Vent
# 32
60 ND 9206 6 7 8 9
80 ND 9206 8 8 10 10
100 ND 9206 10 10 12 12
# 40
80 ND 9206 8 10 11 12
100 ND 9206 10 11 12 13
120 ND 9206 11 12 14 15
# 50
100 ND 9206 13 13 16 16
120 ND 9206 15 14 18 18
140 ND 9206 17 16 20 19
# 60
120 ND 9206 18 16 22 22
140 ND 9206 21 19 26 24
180 ND 9206 25 21 30 28
# 70
140 ND 9206 20 19 29 24
180 ND 9206 24 22 34 28
240 ND 9206 28 27 40 36
# 80
180 ND 9206 31 30 42 38
240 ND 9206 35 31 48 42
280 ND 9206 39 34 54 46
Description Standard VBC High. temp Low. temp. Arctic
Temp. range -20 °C to 70 °C
-20 °C to 120 °C
-40 °C to 70 °C
-55 °C to 70 °C
Type code ref. (sign 8) A H L S
Standard 3/4" NPT for VBC #30, #401" NPT for VBC #50
Optional Contact Metso
TECHNICAL BULLETIN 11/18
S E R I E S V B C P N E U M A T I C C Y L I N D E R A C T U A T O R S6 V B C 2 0 E N
1A 8 HEXAGON SCREW ISO 3506 A2-701B 8 WASHER AISI 3041C 8 SPRING WASHER AISI 3042 1 SLIDE BEARING BRONZE
2A 1 RETAINER RING DIN 17222-C67 VBC 323 1 COVER PLATE AISI 304 VBC 40,50
3A 4 HEXAGON SCREW ISO 3506 A2-70/80 VBC 40, 506 1 CYLINDER BASE EN 1563-GJS-400-158 1 CYLINDER PIPE EN 1706 G-Si10Mg+ANODIZED9 1 PISTON EN 1561-GJL-200
10 1 PISTON ROD PISTON ROD STEEL+HCr15 1 HEXAGON NUT ISO 3506 A2-7016 1 O-RING NITRILE, NBR Cat 1