GTD-Series
Direct Gas Actuators
09-VAED-A
8
7
5
6
GTD-Series Direct Gas Actuators
Copyright © 2014 Emerson Process Management Valve Automation, Inc.
Enclosed Cast
Housing
D
Yoke Pin
C
Travel Stop
Vent Check
NAMUR
B
Acculine™ Shaft
Drive
Features and Benefits
For more than 50 years
Bettis™ and Shafer™
brand actuators have been
supplied to the natural gas
industry for demanding
and critical applications
associated with high
pressure service. These
two world class leaders
have drawn upon their
experience to produce a
high-pressure direct gas
actuator while preserving
decades of field proven
reliability.
A
Enclosed Cast Housing
Heavy duty cast ductile iron housing resists warping or twisting under heavy loads
and during wide temperature swings. The cast housing is more stable than fabricated
plate housings, minimizing the possibility of stem and component misalignment.
Rugged cast accessory mounting pads (not tack welded or bolted-on) provide a safe,
consistent and maintenance friendly automation package.
Corrosion Resistance
GTD-Series actuators use rugged Xylan™ coating, combining PTFE and organic
polymers for excellent corrosion protection. The PTFE component also provides
low coefficients of friction. Xylan™ bonds so effectively to the chemically prepared
cylinder
surface that, unlike nickel, chrome and most metallic platings, cracking5and
8
7
6
flaking are virtually eliminated.
CONFIDENTIAL: This drawing, including the information it bears, is the property of Emerson Process Management Valve Automation, Inc. and must be held in strict confidence and properly safeguarded by
the recipient at all times. It may not be copied or reproduced, or provided or revealed to any other party except with the prior written authorization of Emerson Process Management Valve Automation, Inc.
and any authorized copy or reproduction must include this legend. The recipient may use the same only for the purpose for which Emerson Process Management Valve Automation, Inc. has provided it to
recipient, and it must be returned to Emerson Process Management Valve Automation, Inc., along with all copies and reproductions, upon request. By accepting this drawing, the recipient agrees to the
foregoing.
Water Ingress Protection
GTD-Series actuators meet IP67M specifications for severe high pressure deluge test,
offering both superior water ingress and internal corrosion protection.
AcculineTM Shaft Drive
This unique drive assures a positive yoke seal, maintains accurate alignment and
eliminates accessory shaft side loads.
NAMUR
This mounting configuration allows accessory hardware standardization and
compatibility with a broad range of control and signal generating devices.
Vent Checks
GTD-Series actuators have two individual drive module vent checks to release overpressure and seals to prevent dust, corrosive atmospheres, nesting insects and water
ingress. The lower vent passage isolates valve stem leakage and can be attached to a
fugitive emissions monitoring device.
B
4
2
3
1
REVISIONS
0
Bearings
Xylan Coated
Internals
DATE
ECN
REV
RELEASED
3/27/2014
Piston Seals
D
C
B
Controls
Adjustable Travel Stops
The independently adjustable, blowout-proof travel stop in the
gas cylinder allows for a true 10° travel adjustment total that
significantly adds sealing life to the valve seats.
The GTD-Series control systems are easy to service and require
no special tools for maintenance. They are corrosion resistant
and do not require a weatherproof enclosure for protection.
Individual components may be easily replaced, if necessary.
Yoke Pin
UNLESS
SPECIFIED
TheOTHERWISE
hardened
yoke pin rotates within heavy-duty journal
TOLERANCES
GENERAL NOTES
DIMENSIONAL DATA
bearings. This design advantage
GTD3X06.0allows the yoke pin to roll
along the yoke slot. Unlike a bronze-based sliding block design
VA001-360-77
which drags along the yoke slot, the rolling yoke pin maximizes
mechanical efficiency at this crucial torque generating location.
Hand Pump
A
The hand pump is used solely to safely open and close the valve
in the absence of pipeline pressure, with unique design features
for this application. The pump requires far fewer strokes
than competitive models, so it can close a valve quicker in an
emergency. The pump self-neutralizes automatically. There
is no hand pump selector valve needing to be returned to a
neutral position for the actuator to function with power gas.
TITLE:
1.
2.
3.
4.
6.
7.
8.
9.
DIMENSIONS ARE IN INCHES.
REMOVE BURRS AND BREAK SHARP EDGES
CHAMFER ANGLES X
FILLETS X
SURFACE ROUGHNESS X
CHAMFER FIRST THREAD
THREAD DRILL DEPTHS ARE MAX.
THREAD LENGTHS ARE FULL THREAD.
4
DECIMAL
INCH
.X
.XX
.XXX
u.X
u.XX
u.XXX
ANGULAR
u1v
INTERPRET DIMENSIONS
AND TOLERANCE PER
ASME Y14.5
3
APPROXIMATE WEIGHT
MATERIAL PER ESMA
352.0 lbm
DRAWING NO.
DRWN BY
O.JIMENEZ
THIRD ANGLE PROJECTION
SCALE:
1:1
CHKD BY
N.MUNDY
DWG. SIZE
D
APR BY:
K.CHIN
SHEET 1 of 2
2
Piston/Rod Seals/Wear Bands
The dual, mechanically-energized nitrile piston seals are
designed to provide excellent sealing in low or high pressure
applications. The nitrile seals are selected specifically for natural
gas pipeline service and are produced utilizing the latest curing
techniques, advanced elastomeric compounds and durometers.
They have been designed to be more stable than ordinary seal
compounds, especially in pipelines containing methanes and
sulfides. All pistons feature wide PTFE wear guide bands to
ensure exceptional seal and cylinder service life.
1
DATE
REV.
3/27/2014
0
An innovative control valve eliminates erratic hand pump
operation by impeding hydraulic fluid flow into the reservoir
tank, preventing air from being trapped in the hydraulic
cylinder.
Directional Control Valve
The Shafer “Poppet Block” valve includes two integral
316 stainless steel filters. Power gas is filtered through a
replaceable 140 micron strainer element and dry gas for the
instrumentation is additionally filtered through a replaceable 25
micron strainer element.
A poppet block exhaust check provides an atmospheric
barrier preventing condensation from collecting inside the
actuator cylinders.
Specifications
Maximum Operating Pressure
GTD
Model Expression
Torque Expression CCW Rotation
Hand Pump Strokes
psig
bar
lbf-in/psig
Nm/bar
01X03.5
1289
89
39.3
64.4
12
01X04.0
987
68
51.3
84.0
12
2X04.0
1230
85
62.3
102.1
18
2X05.0
787
54
97.1
159.1
18
3X05.0
1132
78
119.0
194.9
35
3X06.0
786
54
171.1
280.5
35
4X06.0
1295
89
209.6
343.5
60
4X07.0
951
66
285.5
467.8
60
4X08.0
728
50
372.0
609.7
60
5X08.0
1266
87
484.4
793.8
139
5X09.0
1000
69
613.6
1005.6
139
5X10.0
810
56
757.6
1241.6
139
7X10.0
1310
90
934.4
1531.2
265
7X12.0
910
62
1345.4
2204.9
265
The estimated weight includes gas cylinder module, hydraulic cylinder module, drive housing module controls and hydraulic fluid
Actuator torque output is determined by multiplying the actuator’s torque expression by the power pressure supplied to the actuator.
(Torque Output = Torque Expression X Power Supply Pressure)
GTD System Schematic
2
1
EXHAUST
CLOSE
CLOSE
11
12
3
OPEN
16
4
6
POWER
14
5
10
13
8
7
17
9
15
1. OPERATOR (SHOWN IN OPEN POSITION)
2. OPERATOR ROTOR
3. SPEED CONTROL
4. HAND PUMP
5. RESERVOIR TANK
6. RELIEF VALVE
7. CONTROL BLOCK
8. POWER STRAINER (140 MICRON)
9. POWER SHUTOFF VALVE (OPTIONAL)
10. GAUGE (OPTIONAL)
11. POWER POPPET
12. MANUAL OPERATION (HANDLES NOT SHOWN)
13. CONTROL PILOT PISTON (WITH ORIFICE)
14. POWER STORAGE TANK
15. DRAIN VALVE
OPTIONAL
PACKAGE
16. RELIEF VALVE
17. CHECK VALVE
HAND PUMP FEATURE
BEFORE USING HAND PUMP (4), CLOSE VALVE
(9) AND PULL EITHER MANUAL HANDLE (12)
JUST ENOUGH TO FORCE THE POWER POPPET
OFF ITS SEAT AND VENT ALL OF THE PRESSURE
OFF THE POWER SIDE OF THE CIRCUIT.
Materials of Construction
09-VAED-A
8
Product Concept
7
5
6
4
1
REVISIONS
0
RELEASED
3/27/2014
D
D
The GTD-Series high-pressure,
2
3
4
5
6
7
direct gas actuator features
8
9
10
11
12
13
C
14
C
15
16
17
18
19
established performance
20
history in direct gas service.
The package consists of a
DATE
ECN
REV
1
an integrated package with
2
3
Copyright © 2014 Emerson Process Management Valve Automation, Inc.
21
B
B
22
23
Bettis® scotch-yoke design
actuator combined with
the standard Shafer® gas/
hydraulic controls. All of the
Item number
A
in thousands of natural gas
applications worldwide.
Operating Ranges
GTD-Series actuators are
Material
Housing Cover
1
Housing Cover Bolting
CONFIDENTIAL: This drawing, including the information it bears, is the property of Emerson Process Management Valve Automation, Inc. and must be held in strict confidence and properly safeguarded by
the recipient at all times. It may not be copied or reproduced, or provided or revealed to any other party except with the prior written authorization of Emerson Process Management Valve Automation, Inc.
and any authorized copy or reproduction must include this legend. The recipient may use the same only for the purpose for which Emerson Process Management Valve Automation, Inc. has provided it to
recipient, and it must be returned to Emerson Process Management Valve Automation, Inc., along with all copies and reproductions, upon request. By accepting this drawing, the recipient agrees to the
foregoing.
8
2
fundamental GTD-Series
components have been proven
Description
3
7
6
Yoke Cover
5
Yoke Cover Bolting
DIMENSIONS ARE IN INCHES.
REMOVE BURRS AND BREAK SHARP EDGES
CHAMFER ANGLES X
FILLETS X
SURFACE ROUGHNESS X
CHAMFER FIRST THREAD
THREAD DRILL DEPTHS ARE MAX.
THREAD LENGTHS ARE FULL THREAD.
4
TITLE:
TOLERANCES
GENERAL NOTES
1.
2.
3.
4.
6.
7.
8.
9.
A
Ductile Iron
UNLESS OTHERWISE SPECIFIED
DECIMAL
ANGULAR
DIMENSIONAL DATA
GTD3X06.0
Alloy Steel
INCH
u.X
u.XX
u.XXX
.X
.XX
.XXX
u1v
INTERPRET DIMENSIONS
AND TOLERANCE PER
ASME Y14.5
APPROXIMATE WEIGHT
MATERIAL PER ESMA
352.0 lbm
Ductile Iron
3
DRAWING NO.
DRWN BY
O.JIMENEZ
THIRD ANGLE PROJECTION
SCALE:
1:1
VA001-360-77
CHKD BY
N.MUNDY
DWG. SIZE
2
Carbon Steel
Indicator Hub
Ductile Iron
Indicator Coupling Plate
Stainless Steel
Indicator/Yoke Bearings
Acetal Plastic
4
Indicator
Nylon
5
Housing
Ductile Iron
Yoke
Ductile Iron
6
Yoke/Yoke Pin Bushing
Polyethylene
Yoke Bearing
Steel Backed PTFE/Sintered Bronze
Yoke Pin
Alloy Steel
7
powered by high pressure
Yoke Pin Bearing
Steel Backed PTFE/Sintered Bronze
Yoke Pin Thrust Bearing
Polyethylene
Guide Block
Ductile Iron
Guide Bar
Alloy Steel
natural gas and produce
8
guaranteed minimum output
9
Guide Bar Bearing
Steel Backed PTFE/Sintered Bronze
torques to 1,200,000 lbf-in
10
Piston Rod Wiper
Polyurethane
(135,000 Nm). Standard
11
Piston Rod Bearing
Acetal Plastic
12
Tie Bars
Alloy Steel
operating temperatures range
13
Cylinder
Carbon Steel
from –20°F to +200°F (-29°C to
14
Piston Rod
Alloy Steel
15
Piston Seal
Polyurethane
16
Piston Bearings
Polyethylene
17
Piston
Carbon Steel
+93°C). Optional temperature
ranges extend the capabilities
from –50°F to +350°F (-46°C to
+177°C).
18
19
Split Rings
Alloy Steel
Retainer Ring
Stainless Steel
Inner/Outer End Caps
Carbon Steel
End Cap Bolting
Alloy Steel
20
Tie Bar Nuts
Carbon/Alloy Steel
21
Stop Screw Nut
Carbon Steel
22
Stop Screw
Alloy Steel
23
Housing Plug
Carbon Steel
-
Weather Seals
Nitrile
D
APR BY:
K.CHIN
SHEET 1 of 2
1
DATE
REV.
3/27/2014
0
Overall Dimensions
GTD Model
Expression
01X03.5
01X04.0
2X04.0
2X05.0
3X05.0
3X06.0
4X06.0
4X07.0
4X08.0
5X08.0
5X09.0
5X10.0
7X10.0
7X12.0
A
in
43.55
43.55
49.11
49.11
59.64
59.64
71.82
71.82
71.82
87.20
87.20
87.20
102.06
102.06
B
mm
1106.2
1106.2
1247.4
1247.4
1514.9
1514.9
1824.2
1824.2
1824.2
2214.9
2214.9
2214.9
2592.3
2592.3
in
8.33
8.33
8.73
8.73
9.50
9.50
10.96
10.96
10.96
14.36
14.36
14.36
17.02
17.02
Weight
(Bare Actuator)
C
mm
211.5
211.5
221.7
221.7
241.2
241.2
278.5
278.5
278.5
364.8
364.8
364.8
432.3
432.3
in
9.65
9.65
10.69
10.69
14.41
14.41
16.78
16.78
16.78
20.94
20.94
20.94
25.18
25.18
mm
245.1
245.1
271.5
271.5
365.9
365.9
426.2
426.2
426.2
531.9
531.9
531.9
639.6
639.6
lbs
144
150
191
204
334
352
569
589
636
1142
1232
1232
1920
2138
kg
65
68
87
93
152
160
258
267
288
518
559
559
871
970
Estimated Weight
with Controls
lbs
203
210
255
265
370
387
646
676
711
1210
1275
1285
2176
2934
kg
92
95
116
120
168
176
293
307
323
549
578
583
987
1331
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DOC.6P.GTD.US Rev A 02-16