GS (spring return) pneumatic actuator 316 continuous stainless steel bar

Macro Pneumatic actuators

Category Inox 316 from solid bar actuators

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GS360-GS1920

GS360-GS1920 (actuators can also be produced in carbon steel, with painting colours and details on request)

GS (spring return) pneumatic actuator 316 continuous stainless steel bar - benefits -

1.Energized and self-lubricated strips
Less friction between piston and cylinder
It prevents the bonding of the seal to the cylinder even after long periods of inactivity

2.Slots, bushes and pins made by steel with hardness higher than 50 HRC
Higher resistance to the forces inside the actuator

3.Rolling friction between piston and slot
Less friction

4.Scotch yoke with rolling friction (transforming rotary motion into linear motion using piston and shaft without teeths/gears)
Reduced friction between piston and shaft with consequently less wear on the relevant parts
Empowered Breakaway Torque (BTO & BTC)
Smaller volume/size than rack and pinion actuators (with the same torque) therefore less space required for installation
Less weight than the rack and pinion (-30% kg / Nm), with consequent savings on the construction sizing of the plant/equipment
Lower air consumption compared to the rack and pinion actuators (-40% air cm3/Nm for Double Acting and -20% air cm3/Nm for Spring Return) therefore less load on the compressor or the possibility of using a smaller compressor's size.

5.Rolled cylinder
Less wear of the energized ties thanks to the low roughness of the surface

6.Stainless steel shaft
Higher corrosion resistance

From sizes bigger than GD15, NAMUR interface for solenoid valve is already integrated.
No need for extra plate.

100% in- house manufacturing process technology
Maximum control and accuracy in all the stages of the manufacturing process

ATEX Certificate
Installation is allowed in a potential explosive environment

Up to SIL 3 Certified
Guarantee of the high level of functional safety.

TECHNICAL FEATURES
Torque from 360 Nm to 960 Nm
Mounting flange according to EN ISO 5211; F10 - F12 - F14 - F16
In compliance with EN 15714-3
Rotation angle: 92° (-1°, +91°)
Torque: the return torque depends on spring action only notwithstanding the air supply
The spring is provided in four different sizes; see table - general catalogue pneumatic actuator GS br>The actuator automatic closing takes place in clockwise direction by means of its springs
In the code of standard version GS actuators, it is indicated the size of the springs (6=5,6 bar) followed by the breakaway torque in Nm at 5,6 bar air supply.
ATEX version in conformity with directive 2014/34/EU

WORKING CONDITION
Temperature: from -20°C to +80°C
Air supply: 5,6 bar; maximum 8,4 bar
Actuating media: filtered dry compressed air, not necessarily lubricated. In case of lubricated air, either non detergent oil, NBR compatible oil, must be used.

GS (spring return) pneumatic actuator 316 continuous stainless steel bar - dimensions -

DATA SHEET
Code	GS0360416S	GS0480416S	GS0720424S	GS0720416S	GS0960416S
Spare seals	KGGSS223	KGGSS224	KGGSS225	KGGSS225	KGGSS226
Size	GS0360 F10/F12	GS0480 F12/F16	GS0720 F12	GS0720 F14	GS0960 F12/F16
A	565,5	598	736,8	736,8	769,6
A1 (2,8 Bar)	483,5	506	630,8	630,8	645
B	27	36	36	36	46
C x depth	M10x11,5	M12x20	M12x18	M16x18	M12x23
D x depth	M12x11,5	M20x20	-	-	M20x23
ØE	102	125	125	140	125
ØF	125	165	-	-	165
G	19,5	19,5	19,5	19,5	18,5
ØH	156	169	188	188	211
I	22	24	27	27	32
J	138,5	156,3	179,5	179,5	192
K	115	150	130	130	150
L	178	198	216	216	237,7
M	78,5	93,5	101,5	101,5	114,7
N	99,5	104,5	114,5	114,5	123
O	29,5	38,5	38,5	38,5	48,5
P	116	135	160	160	160
Q	-	-	-	-	-
Q2	-	-	-	-	-
ØR	31,8	36,5	41	41	46
S	30	30	30	30	30
S2	-	-	-	-	-
T	148	168	186	186	207,7
T2	-	-	-	-	-
X	150	150	150	150	150
Y	155	168	187	187	209
Z	525,8	565	685	685	718,4
Z1 (2,8 Bar)	435,8	473	559,4	559,4	593,8
Ch	22	22	24	24	24
Ch1 (2,8 Bar)	24	24	30	30	30
Weight (Kg)	45,5	60	82,5	82,5	112
Weight (2,8 Bar) (Kg)	37,5	51	77	77	96
Air (dm³/cycle) (l/cycle)	2	2,7	4,3	4,3	5,6

316 FROM BAR DOUBLE ACTING AND SPRING RETURN PNEUMATIC ACTUATOR COMPONENTS

GS (spring return) pneumatic actuator 316 continuous stainless steel bar - materials - 316 FROM BAR DOUBLE ACTING AND SPRING RETURN PNEUMATIC ACTUATOR COMPONENTS

316 FROM BAR DOUBLE ACTING AND SPRING RETURN PNEUMATIC ACTUATOR COMPONENTS
Pos	Denomination	Q.ty	Material
1	Cylinder	1	Stainless steel
2	Piston	2	Aluminium alloy
3	Cap	2	Stainless steel
4	Shaft	1	Stainless steel
5	Scotch yoke	1	Steel alloy
6	Bearing shaft	1	Acetalic resin
7	Upper shaft support	1	Acetalic resin
8	Bearing shaft	1	Acetalic resin
9	Ext.elastic pin	1	Steel alloy
10	Int.elastic pin	1	Steel alloy
11	Steel bush	2	Steel alloy
12	Rotative sleeve	2	Steel alloy
13*	Dynamic seal	2	Plyurethane
14*	Support disk	4	P.T.F.E. carbo-graphite filled
15*	O-ring	2	Nitrilic rubber
16	O-ring	1	FKM
17	Thrust bearing	1	Acetalic resin
18	Washer	1	Stainless steel
19	Seeger	1	Stainless steel
20	Lower shaft support	1	P.T.F.E. carbo-graphite filled
21	O-ring	1	FKM
22*	GD O-ring	2	Nitrilic rubber
23	Screws	8	Stainless steel
24	Grub screws	2	Stainless steel
25	O-ring	2	Nitrilic rubber
26	Adjusting nut	2	Stainless steel
27	Fixing flange	1	Stainless steel
28	Screws	4	Stainless steel
29*	GS O-ring	4	Nitrilic rubber
30	Cylinder spacer	2	Stainless steel
31	Spring	2	Steel alloy
32	Spring cap	2	Aluminium alloy
33	Spring loading screw	2	Stainless steel
* Components of spare part kit

GS PNEUMATIC ACTUATOR OPERATING DIAGRAM

Drawings on the left = valve in open position
Drawings on the right = valve in closed position

Typical air connection diagram
The pistons of the standard GS actuators are mounted as shown above. Although the spring force is small, the geometry of the mechanism provides more torque at the end of stroke. When the actuator is in the valve open position and the springs are fully compressed, the end stops can be adjusted with precision. Reverse acting spring return actuators are required when the valve needs to open automatically in the case that the pressurized air or power supply is turned off. In reverse acting actuators, the pistons are inserted into the cylinder in the same way as in the Double Acting version and, due to the force of the spring, the actuator opens normally. Caution. The normal torque performance in the reverse acting version, due to its construction, is different from that of the standard version. Caution. To prevent dust or dirt from being sucked into the actuator chamber during spring action, install a filter on port 2. Port 4 is connected to the middle chamber and, when pressurized, the drive shaft rotates anticlockwise to open. In accordance with the international standard ISO 5599-2, the position, location, orientation and shape of the actuator air port connections must be clearly identified and marketed using numbers 2 and 4.