Edwards GV Series User manual

B650-01-880
Issue G
Instruction Manual
GV Gate Valves
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Contents
B650-01-880 Issue G
Contents
Section Page
1 Introduction ....................................................................................... 1
1.1 Scope and definitions ................................................................................................... 1
1.2 Description ................................................................................................................ 1
2 Technical data .................................................................................... 3
2.1 Performance .............................................................................................................. 3
2.2 Mechanical data .......................................................................................................... 3
2.3 Pneumatically operated GV valves ................................................................................... 10
2.4 Maximum baking temperatures .......................................................................................10
2.5 Construction materials .................................................................................................10
2.6 Item numbers ............................................................................................................10
2.6.1 ISO GV valves ............................................................................................................10
2.6.2 ANSI GV valves ..........................................................................................................11
2.6.3 CF GV valves .............................................................................................................11
3 Installation ....................................................................................... 13
3.1 Unpack and inspect .....................................................................................................13
3.2 Installation requirements ..............................................................................................13
3.3 Fit the GV valve .........................................................................................................14
3.4 Pneumatic connections (pneumatic GV valves only) ..............................................................14
3.5 Position indicator connections (pneumatic valves only) ..........................................................17
3.5.1 Valves with microswitches ............................................................................................17
3.5.2 GV valves with reed switches .........................................................................................17
4 Operation ........................................................................................ 19
4.1 Manual GV valves .......................................................................................................19
4.2 Pneumatic GV valves ...................................................................................................19
5 Maintenance ..................................................................................... 21
6 Storage and disposal ........................................................................... 23
6.1 Storage ...................................................................................................................23
6.2 Disposal ...................................................................................................................23
7 Service, spares and accessories .............................................................. 25
7.1 Introduction .............................................................................................................25
7.2 Service ....................................................................................................................25
7.3 Spares .....................................................................................................................25
7.4 Accessories ...............................................................................................................28
For return of equipment, complete the HS Forms at the end of this manual.
dcs/7867/01/08

B650-01-880 Issue G
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Contents
Illustrations
Figure Page
1 Dimensions of manual GV valves (see Table 2) ..................................................................... 4
2 Dimensions of pneumatic GV valves with microswitches (see Table 2) ......................................... 5
3 Dimensions of pneumatic GV valves with reed switches (see Table 2) .......................................... 8
4 Flange dimensions (see Table 3) ...................................................................................... 9
5 Typical pneumatic circuit .............................................................................................16
6 Wiring diagram for pneumatic GV valves with reed switches ....................................................20
Tables
Table Page
1 Technical data ........................................................................................................... 3
2 GV valve body and flange dimensions (mm) ......................................................................... 6
3 GV valve body and flange dimensions (mm) ......................................................................... 6
4 Spares for GV valves manufactured in 1996 and later ............................................................25
5 Spares for GV valves manufactured in 1993 to 1995 ..............................................................27
Trademark credits
ConFlat® is a trademark of the Varian Corporation

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Introduction
B650-01-880 Issue G
1 Introduction
1.1 Scope and definitions
This manual provides installation, operation and maintenance instructions for the Edwards GV Gate Valves (referred
to as GV Valves throughout the remainder of this manual). You must use the GV Valves as specified in this manual.
Read this manual before you install and operate the GV Valve. Important safety information is highlighted as
WARNING and CAUTION instructions; you must obey these instructions. The use of WARNINGS and CAUTIONS is defined
below.
CAUTION
Cautions are given where failure to observe the instruction could result in damage to the equipment, associated
equipment and process.
The units used throughout this manual conform to the SI international system of units of measurement.
1.2 Description
The GV Valves are bellows sealed gate valves for use in applications which require high leak tightness and a minimum
of hydrocarbons in the vacuum system.
The GV Valves have stainless steel bodies of vacuum brazed construction. The valve bodies have been electropolished
both inside and out and have been baked to 1100 °C during manufacture; this eliminates the possibility of virtual
leaks in the GV Valve and ensures that the GV Valve has low outgassing characteristics.
GV Valves are available with ISO flanges, ANSI flanges and CF (ConFlat®) metal sealed flanges; use CF flanged
GV Valves for applications which require ultra high vacuum and very high baking temperatures. ISO and ANSI valves
are supplied with fluoroelastomer bonnet seals; CF GV Valves have metal bonnet seals. All GV Valves have
fluoroelastomer valve plate seals.
Manual and pneumatically actuated GV Valves are available. The pneumatically actuated GV Valves have position
indicators which can be used by your control equipment to determine when the valve is open or closed:
!GVI*P pneumatically actuated ISO valves have reed switch position indicators (see Section 3.5.2).
!Other pneumatically actuated ISO GV Valves and all pneumatically actuated CF GV Valves have microswitch
position indicators (see Section 3.5.1).
WARNING
Warnings are given where failure to observe the instruction could result in injury or death to
people.

B650-01-880 Issue G
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Technical data
B650-01-880 Issue G
2 Technical data
2.1 Performance
2.2 Mechanical data
Operating pressure range < 1 x 10-9 mbar to 1 bar (absolute)
(1 x 10-7 to 1 x 105 Pa)
Leak tightness < 1 x 10-9 mbar l s-1 (1 x 10-7 Pa l s-1)
Maximum pressure differential across
the valve plate (opening) 30 mbar (3 x 103 Pa)
Molecular conductance See Table 1
Average life before first service 100,000 open/close cycles (dependent on the application)
Dimensions See Figure 1 to 3 and Table 2
Flange sizes See Table 2
Mass See Table 1
Mounting position Any orientation
Table 1 - Technical data
GV Valve
Molecular
conductance
(l s-1)
Approximate
mass (kg)
Manual GV
Valves Pneumatic GV Valves
No of turns of
handle to
open/ close the
valve
Pneumatic
cylinder
capacity (l)
Minimum closing
and opening
time (s) at 70 psi
(4.8 x 105 Pa)
GVI040, GVC015 130 5 5 0.033 0.5
GVI050, GVA/GVC020 250 6 5 0.033 0.5
GVI063, GVI063P,
GVA/GVC025
520 8 6 0.112 1.0
GVI100, GVI100P,
GVA/GVC040
2000 15 10 0.233 1.5
GVI160, GVI160P,
GVA/GVC060
6300 23 10 0.233 1.5
GVI200, GVA/GVC080 15000 34 10 0.416 2 (close)
3 (open)
GVI250, GVA/GVC100 23000 73 14 0.520 3 (close)
4 (open)
GVI320, GVA/GVC120 39000 77 15 0.520 3 (close)
4 (open)

B650-01-880 Issue G
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Technical data
Figure 1 - Dimensions of manual GV valves (see Table 2)
1. Grasp type valve handle: GV Valves with flanges 100 mm (4 inches) and larger
2. Knurled valve handle: GV Valves with flanges up to 75 mm (3 inches)
3. Carriage side
4. Seal side

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Technical data
B650-01-880 Issue G
Figure 2 - Dimensions of pneumatic GV valves with microswitches (see Table 2)
1. Position indicator wires
2. 1/8 inch NPT ports
3. Carriage side
4. Seal side

B650-01-880 Issue G
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Technical data
Table 2 - GV valve body and flange dimensions (mm)
Valve Nominal
bore size A B C D E F G H K
GVI040 40 mm 84.1 26.2 51.6 50.8 69.3 50.7 86.1 33.0 134.9
GVI050 50 mm 96.8 75.2 57.9 50.8 69.3 50.7 104.5 37.6 134.9
GVI063/P 63 mm 111.0 89.4 51.6 50.8 69.3 50.7 122.1 43.1 134.9
GVI100/P 100 mm 177.8 143.5 61.2 75.5 93.5 76.2 206.4 66.9 175.6
GVI160/P 160 mm 222.3 191.8 67.0 75.5 93.5 76.2 270.5 87.6 175.6
GVI200 200 mm 285.8 254.5 67.6 75.5 93.5 76.2 353.4 114.6 175.6
GVI250 250 mm 341.1 303.5 80.0 88.9 120.4 120.4 460.6 146.6 240.7
GVI320 320 mm 408.2 362.7 80.0 88.9 120.4 120.4 560.5 174.9 240.7
GVA020 2 inches 96.8 75.2 51.6 50.8 69.3 50.7 104.5 37.6 134.9
GVA025 2.5 inches 111.0 89.4 51.6 50.8 69.3 50.7 122.1 43.1 134.9
GVA040 4 inches 177.8 143.5 61.2 75.9 93.5 76.2 206.4 66.9 175.6
GVA060 6 inches 222.3 191.8 61.2 75.9 93.5 76.2 270.5 87.6 175.6
GVA080 8 inches 285.8 254.5 70.3 75.9 93.5 76.2 353.4 114.6 175.6
GVA100 10 inches 341.4 303.5 80.0 88.9 120.4 101.6 460.6 146.6 240.7
GVA120 12 inches 403.2 362.7 80.0 88.9 120.4 101.6 560.5 174.9 240.7
GVC015 1.5 inches 84.1 62.5 51.6 50.8 69.3 50.7 86.1 33.0 134.9
GVC020 2 inches 96.8 75.2 57.9 50.8 69.3 50.7 104.5 37.6 134.9
GVC025 2.5 inches 111.0 89.4 61.2 50.8 69.3 50.7 122.1 43.1 134.9
GVC040 4 inches 177.8 143.5 75.4 75.9 93.5 76.2 206.4 66.9 175.6
GVC060 6 inches 222.3 191.8 80.5 75.9 93.5 76.2 270.5 87.6 175.6
GVC080 8 inches 285.8 254.5 85.1 75.9 93.5 76.2 353.4 114.6 175.6
GVC100 10 inches 341.4 303.5 98.8 88.9 120.4 101.6 460.6 146.6 240.7
GVC120 12 inches 403.2 362.7 98.8 88.9 120.4 101.6 560.5 174.9 240.7
Table 3 - GV valve body and flange dimensions (mm)
Valve L M N P S T V
GVI040 91.7 69.9 38.1 - 41.2 - 12.7
GVI050 91.7 74.9 50.8 - 52.2 - 12.7
GVI063/P 91.7 130.1 63.5 4 110.0 M8 12.7
GVI100/P 201.3 165.1 101.6 8 145.0 M8 12.7
GVI160/P 201.3 225.0 152.4 8 200.0 M10 12.1
GVI200 201.3 258.8 203.2 12 260.0 M10 15.9
GVI250 231.7 335.0 254.0 12 310.0 M10 19.0
GVI320 231.7 425.0 304.8 12 395.0 M12 19.0
GVA020 91.7 151.6 50.8 4 120.7 3/8-16 12.7
GVA025 91.7 151.6 63.5 4 120.7 3/8-16 12.7
GVA040 190.6 228.4 101.9 8 192.8 3/8-16 12.7
GVA060 200.2 279.4 152.4 8 241.3 3/4-10 12.7
GVA080 200.2 279.4 203.3 8 241.3 3/4-10 17.2
GVA100 231.7 406.4 254.0 12 362.0 3/4-10 19.1

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Technical data
B650-01-880 Issue G
GVA120 231.7 406.4 304.8 12 362.0 3/4-10 19.1
GVC015 91.7 69.3 38.1 6 58.7 M6 12.7
GVC020 91.7 85.7 50.8 8 72.4 M8 15.9
GVC025 91.7 113.5 63.5 8 92.2 M8 17.5
GVC040 190.6 151.6 101.9 16 130.3 M8 19.8
GVC060 200.2 202.4 152.4 20 181.1 M8 22.4
GVC080 200.2 253.2 203.2 24 231.9 M8 24.6
GVC100 231.7 304.8 254.0 32 284.0 M8 28.5
GVC120 231.7 354.6 304.8 30 325.4 M10 28.5
Table 3 - GV valve body and flange dimensions (mm) (continued)
Valve L M N P S T V

B650-01-880 Issue G
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Technical data
Figure 3 - Dimensions of pneumatic GV valves with reed switches (see Table 2)
1. Electrical connector (refer to Section 3.5.2)
2. 1/8 inch NPT ports
3. Carriage side
4. Seal side

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Technical data
B650-01-880 Issue G
Figure 4 - Flange dimensions (see Table 3)
A. NW flange
B. ISO flange
C. ANSI flange
D. CF flange
P = number of holes of diameter T

B650-01-880 Issue G
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Technical data
2.3 Pneumatically operated GV valves
The pneumatic supply should be dry and filtered. Lubricated or non-lubricated air may be used.
2.4 Maximum baking temperatures
2.5 Construction materials
The GV Valves are manufactured from the following materials:
2.6 Item numbers
2.6.1 ISO GV valves
Pneumatic supply
Minimum supply pressure 65 psig (4.5 bar gauge, 5.5 bar absolute, 5.5 x 105 Pa)
Maximum supply pressure 80 psig (5.5 bar gauge, 6.5 bar absolute, 6.5 x 105 Pa)
Pneumatic connections 1/8 inch NPT
Position indicator switch contact rating 28 V, 20 mA a.c. and d.c.
Valve body
Fluoroelastomer sealed bonnet 150 °C
Metal sealed bonnet 250 °C
Valve closed 200 °C
Manual actuator 200 °C
Pneumatic actuator 100 °C
Valve body AISI 304 stainless steel
Valve plate AISI 304 stainless steel
Mechanism AISI 304 stainless steel
Bearings Hardened high carbon chrome steel
Circlips SS PH 15-7 Mo
Bellows AISI 304 stainless steel
Seals, valve plate Fluoroelastomer
Item Number
Valve Flange Manual valve Pneumatic valve
GVI040 NW40 B650-01-000 B650-51-000
GVI050 NW50 B651-01-000 B651-51-000
GVI063 ISO63 B652-01-000 B652-51-000
GVI100 ISO100 B653-01-000 B653-51-000
GVI160 ISO160 B654-01-000 B654-51-000
GVI200 ISO200 B655-01-000 B655-51-000
GVI250 ISO250 B656-01-000 B656-51-000

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Technical data
B650-01-880 Issue G
2.6.2 ANSI GV valves
2.6.3 CF GV valves
GVI320 ISO320 B657-01-000 B657-51-000
GVI063P ISO63 - B652-54-000
GVI100P ISO100 - B653-54-000
GVI160P ISO160 - B654-54-000
Item Number
Valve Flange Manual valve Pneumatic valve
GVA020 ANSI2 B651-02-000 B651-52-000
GVA025 ANSI2 B652-02-000 B652-52-000
GVA040 ANSI4 B653-02-000 B653-52-000
GVA060 ANSI6 B654-02-000 B654-52-000
GVA080 ANSI6 B655-02-000 B655-52-000
GVA100 ANSI10 B656-02-000 B656-52-000
GVA120 ANSI10 B657-02-000 B657-52-000
Item Number
Valve Flange Manual valve Pneumatic valve
GVC015 2.73 inch o.d. CF B650-03-000 B650-53-000
GVC020 3.37 inch o.d. CF B651-03-000 B651-53-000
GVC025 4.47 inch o.d. CF B652-03-000 B652-53-000
GVC040 6.00 inch o.d. CF B653-03-000 B653-53-000
GVC063 8.00 inch o.d. CF B654-03-000 B654-53-000
GVC080 10.00 inch o.d. CF B655-03-000 B655-53-000
GVC100 12.00 inch o.d. CF B656-03-000 B656-53-000
GVC120 14.00 inch o.d. CF B657-03-000 B657-53-000
Item Number
Valve Flange Manual valve Pneumatic valve

B650-01-880 Issue G
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Installation
B650-01-880 Issue G
3 Installation
3.1 Unpack and inspect
Remove all the packing materials and check the GV Valve; do not remove the protective covers from the valve flanges
yet.
If the GV Valve is damaged, notify your supplier and the carrier in writing within three days; state the Item Number
of the GV Valve together with your order number and your supplier’s invoice number. Retain the packing materials
for inspection. Do not use the GV Valve if it is damaged.
If the GV Valve is not to be used immediately, store the GV Valve in suitable conditions as described in Section 6.
3.2 Installation requirements
The GV Valve can be fitted in any orientation. However, we recommend that you install the GV Valve with the
carriage side of the valve plate on the high vacuum side of the vacuum system. This ensures that the valve body is
under vacuum at all times and prevents the need to pump down the valve body.
The GV Valve is supported by the pipeline it is fitted to. You must:
!Ensure that the GV Valve and the adjacent pipelines are adequately supported.
!Ensure that the pipeline flanges are in-line, parallel and the correct distance apart, to prevent stress on the
valve body.
!Ensure that the installation design and configuration is suitable for the GV Valve. If it is not, the GV Valve
may leak.
!Install flexible bellows in the pipeline to prevent the transmission of stress to the valve body during baking or
from the mass of the other components in your vacuum system.
For CF GV Valves, use copper gaskets to seal the valve.
For ISO and ANSI GV Valves, we recommend that you use trapped O-rings to seal a GV Valve with a flange size greater
than 50 mm (2 inches), unless you will use the GV Valve in an application where there must be no trapped volumes.
In these applications you can use Co-Seals, as long as:
!The valve body and the pipelines are supported so that there is even loading of the Co-Seal faces.
!The securing bolts are evenly tightened to a maximum torque of 5 Nm.
When you install a manual GV Valve, ensure that you can access the valve handle.
WARNING
Where necessary, use suitable lifting equipment to move the valve. Refer to Table 1 for the mass
of the valves.
WARNING
Take appropriate precautions when you install the GV Valve in a system in which dangerous
process substances have been pumped.

B650-01-880 Issue G
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Installation
3.3 Fit the GV valve
Install the GV Valve in clean conditions and wear clean lint-free gloves to touch the GV Valve. If you do not, the
GV Valve may be contaminated and may outgas when it is installed.
Use suitable clamps to fit GVI040 and GVI050 Valves, which have NW flanges.
All other GV Valves have two flanges, each of which has tapped holes. You must use bolts of the correct length to fit
the GV Valve. We recommend that you use bolts which are at least 6 mm (1/4 inch) shorter than the thickness of
both mating flanges and seal. If you use longer bolts, you will damage the body panels and the sealing surface of the
gate O-ring and the GV Valve may leak. Use the following procedure:
1. Remove the flange covers from the GV Valve and wipe the flanges and the gaskets with a clean, dry lint-free
cloth.
2. If you have O-ring seal flanges, apply a light wipe of high vacuum grease (such as Fomblin RT15) to the O-ring,
then fit the O-ring in the groove in the flange.
3. Place the GV Valve between the pipeline flanges and in the required orientation (refer to Section 3.2).
4. If you will bake the GV Valve, lightly grease the securing bolts with a suitable high temperature, anti-seize
compound.
5. Fit the securing bolts, then tighten them progressively and alternately (that is, tighten one bolt by a few turns,
then tighten the bolt on the opposite side of the valve, then tighten the bolt adjacent to the first bolt, and so
on) to the following maximum torques:
!Co-Seals: 5 Nm
!O-ring seals: 7 to 14 Nm
!CF flanges up to 63 mm (21/2 inch) outside diameter: 22 Nm.
If you do not tighten the bolts correctly, the GV Valve may leak.
3.4 Pneumatic connections (pneumatic GV valves only)
The GV Valve is supplied with the pneumatic cylinder pressurised to secure the valve plate during transit:
!GV Valves with nominal flange size less than 200 mm (8 inches) are supplied with the GV Valve secured in the
open position; a check-valve is fitted to the pneumatic connection closest to the valve body to maintain the
pressure in the pneumatic cylinder.
!GV Valves with nominal flange size greater than or equal to 200 mm (8 inches) are supplied with the GV Valve
secured in the closed position; a check-valve is fitted to the pneumatic connection furthest from the valve
body to maintain the pressure in the pneumatic cylinder.
WARNING
Install the GV Valve so that fingers or other parts of the body cannot get trapped by exposed parts
of the valve mechanism.
WARNING
Ensure that you control the release of compressed air when you connect or disconnect the
pneumatic supply, and unscrew and remove the check- valve. If you do, the sudden release of high
pressure air may cause injury.

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Installation
B650-01-880 Issue G
1. Slowly unscrew the check-valve to release the pressure in the pneumatic cylinder. Do not fully unscrew the
check-valve.
2. When the pneumatic cylinder is at atmospheric pressure, remove the check- valve.
3. Use suitable components (refer to Section 2) to connect your pneumatic supply to the two pneumatic
connections on the double acting actuating cylinder on the GV Valve. Ensure that the connections comply with
all local pneumatic regulations, and that your pneumatic supply complies with the requirements of Section 2.3.
If it does not, you can damage the GV Valve. A typical pneumatic circuit is shown in Figure 5.
4. We recommend that you fit an electropneumatic control-valve accessory (refer to Section 7), to allow you to
adjust the opening and closing times of the GV Valve. Fit the electropneumatic control-valve as described in the
instruction manual supplied with the control-valve. If you fit a control-valve, you can fit the check-valve
(removed in Step 1 and 2) to the inlet of the control-valve, to maintain the GV Valve position if the pneumatic
supply fails (see Figure 5).
5. When you have connected the pneumatic supply to the GV Valve to the times shown in Table 1. If you do not, you
may damage the GV Valve when you operate it and it may leak. Refer to the instruction manual supplied with
your electropneumatic control-valve to adjust the opening and closing times.

B650-01-880 Issue G
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Installation
Figure 5 - Typical pneumatic circuit
6. Control valve
7. Electrical connections
8. GV Valve
9. Flow controller
1. Compressed air supply
2. Shut-off valve
3. Filter
4. Pressure regulator
5. Check-valve (optional)