Accessories and Options ........................................................................................... 13
Standard Actuator Options ...................................................................................... 14
Suffix2nd2nd3rd4th5th
Trim N°Max.
C
v
0 3.8
1 2.3
2 1.2
3 0.6
4 0.25
5 0.10
6 0.050
7 0.025
8 0.010
9 0.004
Adjustable
C
v
0 Undefined
1 Without
2 With
Construction
Option
Standard
A Angle
BS Bellows seal
EB Cryogenic
HP High pressure
MS Anti-cavitation
SP Special
2
Figure 2:
Actuator Mounting Positions
2 | GE Energy
3
4
1
Information contained in this publication is for general information only and
GE reserves the right to modify the contents without prior notice.
No warranty either expressed or implied is either given or intended.
Microflow Control Innovation
Optimized CV Characteristics
The VariPak valve outshines conventional microflow valves with its support of a wide range of nominal Cv values (from 0.0016 to 3.8), using only
eight plugs and five seats.
Precise Cv Calibration and Selection - CVand F
Valve Sizes
Trim
.5"
(15mm)
•••90.00160.00200.00240.00280.00320.0036
•••80.0040.0050.0060.0070.0080.009
•••70.0100.0130.0160.0190.0210.023
•••60.0200.0250.0300.0350.0400.045
•••50.040.050.060.070.080.09
•••40.100.130.160.190.210.23
•••30.250.300.350.400.450.50 0.55
•••20.50.60.70.80.91.01.1
•••11.91.11.31.51.71.92.1
(1) Flangeless, flanged or threaded connections.
(2) Flangeless or threaded connections.
(3) The “Risk-free” setting allows for easy valve capacity adjustments in the field to meet changing service conditions.
.75"
(20mm)
••01.51.92.32.62.93.23.5
1"
(25mm)
(2)(1)
No.
Min.
With Adjustable CV Function
Flow Coefficient C
Risk-
(3)
Free
V
L
Max.
0.00400.0040
0.0100.010
0.0250.025
0.0500.050
0.100.10
0.250.25
0.600.60
1.21.2
2.32.3
3.83.8
Without
Adjustable
C
V
Function
Critical
Flow
Factor
F
L
0.85
0.85
0.85
0.85
0.85
0.90
0.90
0.92
0.92
0.92
Figure 3: Flow Coefficient Adjustment
28000 Series Varipak Control Valves | 3
General Data
Body
Type: globe style
angle style optional
Sizes: 1" (DN 25) standard
1/2" (DN 15) and 3/4" (DN 20) optional
Materials: Standard: type 316L St. St.
Optional: Monel®, Hastelloy® C,
Alloy 20, others
Options: Flanged valve
Anti-cavitation Varilog
High pressure
Bellows seal
Cryogenic
Angle valve
NACE version
Trim
Plug type: contoured, heavy top guided
multi-staged anti-cavitation (Varilog) optional
Seat type: metal seat
CV ratio: 500/1 at max. C
Flow characteristics: linear (trim No. 0 to 5)
modified linear (trim No. 6 to 9)
Flow Direction: flow-to-open
flow-to-close optional
Actuator
Type: spring-opposed rolling diaphragm
Action: direct or reverse, easily performed without
additional parts
CV adjustment: optional adjustable knob/lever Handwheel: optional top mounted
Air connection: 1/8" NPT
Temperature Range/Seat Leakage
Valve TypeTemperature RangeSeat Class
200/1 at min. C
(1)(2)
V
V
Standard and High Pressure Valves
Cryogenic Valves
Varilog Anit-Cavitation Valves
(1) Please consult GE for applications outside the temperature ranges noted.
(2) Class IV seat leakage is standard and Class V is optional. Seat leakage class ratings per IEC 534-4 and ANSI/FCI 70-2.
-320°F to +650°F (-192°C to +343°C)
-455°F to +300°F (-270°C to +150°C)
-20°F to +650°F (-29°C to +343°C)
IVV
Rating/End Connections**
Valve Sizes
Maximum
C
inchesmmFlangelessThreadedSWBW
V
ASME Class 150-1500
ISO PN 20-250
Flanged
Face-to-Face:
6.3” (160mm)
.5152.3•••••
.75202.3•••••
1253.8••••••
** Please consult GE for applications requiring ASME Class 2500/ISO PN 420 rating.
15Handwheel (optional)Lexan® + Austenitic St. St.Lexan® + Austenitic St. St.
+450°F
+232°C
(1) Materials and processes in accordance with the requirements of NACE specification MR0103.
Applications requiring compliance to MR0175, 2003 Rev. or ISO 15156 would require engineering review.
(2) Materials designated for these parts conform to NACE Class III bolting requirements.
(3) Materials designated for these parts conform to NACE Class I or Class II bolting requirements.
(4) Consult GE for NACE Applications above ASME Class 600 rating.
* Materials noted throughout this text are for reference only. GE reserves the right to supply trade name material or equivalent
6 | GE Energy
Material not applicable
Standard Flangeless Varipak
28000 Series
Due to its simple, compact, and versatile stainless-steel body design,
the standard flangeless Varipak valve is widely used across a variety of
industries.
Figure 5:
Standard Flangeless Varipak
Rated Cv Range/Weight
Body/Actuator Assembly WeightRated CV Range
15.4 lbs (7 kg)3.8 to 0.0040 (trim No. 0 to 9)
Dimensions – inches (mm)
Standard Varipak (Stainless Steel)Bar Stock Body
(For Non-Castable Material)
4.13
(105)
10.24
(260)
Handwheel (optional)
12.80
(325)
11.10
(282)
2 holes tapped
5/16" – 18 UNC
depth 11 (7/16")
1/2" NPT
Optional
3/4" NPT
1" NPT
Provide a removal clearance of 5.5 inches (140 mm)
1.30
(33)
4.02
(102)
8.56
(217.5)
1.77
1.10
(28)
28000 Series Varipak Control Valves | 7
(45)
Standard Flanged Varipak
28000 Series
The Varipak is also available in flanged configurations with connections and ratings as indicated in the following table.
Flange Ratings/Weight
Figure 6: Standard FlangedVaripak
Face-to-Face DimensionsFlange RatingsBody/Actuator S/A Weight*Rated CV Range
4" (102mm)
ASME Class 150-600
ISO PN 20-100
(raised face only)
8 to 10 kg
(17.4 to 22 lbs)
3.8 to 0.0040
6.3" (160mm)
ASME Class 150-1500
ISO PN 20-250
DIN PN 10-250
10 to 12 kg
(22 to 26.5 lbs)
(trim No. 0 to 9)
(RF, FF, RTS, etc...)
* depending on rating.
Dimensions – inches (mm)
10.24
(260)
Handwheel (optional)
12.80
(325)
11.10
(282)
2 holes tapped
5/16" – 18 UNC
depth 11 (7/16")
4.13
(105)
Provide a removal clearance of 5.5 inches (140 mm)
8 | GE Energy
6.30
(160)
8.56
(217.5)
4.02
(102)
Varilog* Anti-Cavitation Varipak
28000 MS Series
The Varilog multi-stage trim design for the Varipak control valve provides
unmatched anti-cavitation performance in low flow applications.
By reducing erosion and vibrations, this design helps minimize failure that is often
associated with conventional single-seated valves. The Varilog trim is available
with the standard Varipak body designs in either the flanged or flangeless
configurations.
Provide a removal clearance of 5.5 inches (140 mm)
1.30
(33)
4.02
(102)
8.56
(217.5)
1.77
1.10
(28)
28000 Series Varipak Control Valves | 9
(45)
High Pressure Varipak
28000 HP Series
The high-pressure Varipak valve design is recommended for applications
involving conditions with very high upstream pressure or pressure drop
that exceeds the pressure rating of the standard Varipak body design.
Specific Characteristics
Figure 8:
High Pressure Varipak
Rated CV RangeBody RatingSeat LeakageMaterials
0.60 to 0.0040
(trim No. 3 to 9)
ASME Class 2500
ISO PN 420
Class IV
Body
Other PartsStandard Construction: see page 6
Dimensions – inches (mm)
Handwheel (optional)
4.13
(105)
2.24
(57)
2 holes tapped
5/16" – 18 UNC
depth 11 (7/16")
1/2" NPT
Optional
3/4" NPT
1" NPT
Provide a removal clearance of 5.5 inches (140 mm)
6.38
(162
1.10
(28)
10.24
(260)
8.56
(217.5)
11.10
(282)
12.80
(325)
Valve SizesX
inchesmminchesmm
.5153.1580
.7520
125
ASME A 182 Gr. F 316L
Optional: ASTM A182 Gr. F 316
1/4" NPT
1
Supply Connection
1/4" NPT
2
Instrument Connection
4.02102
10 | GE Energy
Bellows Seal Varipak
28000 BS Series
For applications that require no leakage at the packing box, the Varipak
valve is available with a bellows seal. This design is ideal for applications
that involve the handling of flammable, toxic, or explosive fluids.
Specific Characteristics
Figure 9A:
Bellows Seal Varipak
Rated CV
Range
2.3 to 0.0040
(trim No. 1 to 9)
Body Rating
ASME Class 150-600
ISO PN 10-100
Dimensions – inches (mm)
4.13
(105)
2 holes tapped
5/16" – 18 UNC
depth 11 (7/16")
1/2" NPT
Optional
3/4" NPT
1" NPT
Provide a removal clearance of 5.5 inches (140 mm)
1.30
(33)
4.02
(102)
Seat
Leakage
Class IV
10.24
(260)
8.56
(217.5)
Operating
Pressures
800 psi at +212°F
(55 bar at +100°C)
580 psi at +392°F
(40 bar at +200°C)
Handwheel (optional)
12.80
(325)
11.10
(282)
Materials
Body
Plug/Bellows
Subassembly
ASTM A 182 Gr. F 316L
Optional: A182 Gr. F 316
Plug and Seat: Standard Materials
Bellows Assembly: 316L St. St.
Viton
®
O-rings
Other PartsStandard Construction: see page 6
Figure 9B:
Plug and Bellows Subassembly
28000 Series Varipak Control Valves | 11
Cryogenic Varipak
28000 EB Series
Simplified maintenance
This Varipak control valve design meets the requirements of cryogenic processes that require thermal insulation. An insulating interface sets up between the
valve body (cold zone) and the body extension located in the higher temperature
area (warm zone). The valve body assembly and its thermal extension are positioned inside the cold box, and the plug can easily be removed and inspected
without disturbing the valve body. This eliminates the need for any preliminary,
complicated dismounting, and more importantly, prevents any interference
with the cold box.
Body
Manufactured from a material suitable for low temperatures, the valve body
maintains ductility in service. It can be conveniently mounted to suit specific
piping needs, as long as the angle between the valve axis and vertical does not
exceed 60°.
Specific Characteristics
The bonnet is located away from the cryogenic fluid, which means that the body
gasket is not inside the cold zone. This design prevents any leakage
of the cryogen into the insulated zone.
Body extension
To reduce the inflow of head by conduction, thin-walled metal tubes are used
for the body extension and coupling sleeve. In addition, the annular space is
reduced to exclude convection currents.
Plug
The design of the plug allows the working parts to be accurately centered in
relation to the seat and provides a uniform temperature zone for the guiding.
Rated CV
Range
3.8 to 0.10
(trim No. 0 to 5)
Temperature
Range
-455°F to +300°F
(-270°C to + 150°C)
Dimensions – inches (mm)
10.24
(260)
8.56
(217.5)
2 holes tapped
5/16" – 18 UNC
depth 11 (7/16")
4.13
(105)
2.24
(57)
15.71
(399)
Body
Rating
ASME Class 150-600
ISO PN 20-100
excepted trim No. 0:
ASME Class 150-300
ISO PN 20-50
Handwheel (optional)
1
2
22.13
(562)
20.43
(519)
Seat
Leakage
Plug/StemStandard Material
Class IV
O-ring Seat
Other PartsStandard Construction: see page 6
1/4" NPT
Supply Connection
1/4" NPT
Instrument Connection
Body and
Extension
Seat
Gasket
Materials
ASTM A 182 Gr. F 316L
Trim No. 0: Standard Material
Trim No. 1 to 5: ASTM A 564 Gr. 630
Condition H900 Type 17-4 PH. St. St.
PTFE
1.30 (33)
Provide a removal clearance of 5.5 inches (140 mm)
12 | GE Energy
4.02
(102)
Figure 10: Cryogenic Varipak
Accessories and Options
Pneumatic Positioner (Model 7700P)
Type
pneumatic, force balance
Mounting
built-in bracket in actuator
Action
direct: increasing instrument signal
increases air output
Characteristics
linear
Instrument signal
3 to 15, 6 to 30 or 3 to 27 psi
200 to 1000, 400 to 2050 or
(200 to 1850 mbar)
3 to 9, and 9 to 15 psi
(200 to 600 and 600 to 1000 mbar)
split range
Connections
1/4" NPT instrument and supply –
1/8" NPT output
Average air consumption
0.15 scfm at 30 psi supply
Figure 11: Model 7700P Pneumatic
Positioner
(0.26 Nm3/h at 2.1 bar supply)
Max. air output
4.20 scfm (7 Nm3/h)
Supply pressure effect
0.05 percent of full stroke variation per
psi supply pressure change
(0.07 percent per 100 mbar)
Open loop gain
70
Linearity
± 0.5 percent
Sensitivity
0.1 percent
Repeatability
0.1 percent
Full stroke time
less than one second
Weight
3.3 lbs (1.5 kg)
Other Accessories
Proximity sensors and limit switches
Digital positioners – HART® and
Fieldbus Foundation
Handwheel, airsets and solenoid valves
Figure 12: Model 7700E
Electropneumatic Positioner
Electropneumatic Positioner (Model 7700E)
Type
electropneumatic, force balance
Mounting
compact, without external linkage
to the actuator (see Fig. 15)
Action
direct: increasing instrument signal
increases air output
Characteristics
linear
Instrument signal
4-20 mA
Air Connections
1/4" NPT supply – 1/8" NPT output
Average air consumption
California
Phone: +1-562-941-7610
Fax: +1-562-941-7810
* Masoneil an, Varipak, Va rilog and LE Pac king are regist ered tradema rks of the Gener al Electric C ompany.
Other company names and product names used in this document are the registered trademarks or trademarks of their respective owners.