Quick exhaust valves SE/SEU
Subject to change – 2014/05
2
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Quick exhaust valves SE/SEU
Key features, product range overview and type codes
Features
Function SE SEU
These components allow higher piston
speeds to be achieved on the return
stroke of single and double-acting
cylinders.
Compressed air flows from the pilot
valve and via the quick exhaust valve
to the cylinder. The exhaust port 3 is
closed at this time. When the pressure
at 1 falls, exhaust flow occurs from 2
to 3.
In order to achieve the full benefit of
the quick exhaust function,
the valve must be connected directly
to the port of the cylinder.
In the quick exhaust valve SEU the
exhaust noise is reduced by a silencer.
1
2
3
1
2
3
Product range overview
Function Version Type Pneumatic connection è Page/Internet
1 2
Quick exhaust valves Compact design
SE Without silencer Gx, G¼, Gy, G½,
G¾
Gx, G¼, Gy, G½,
G¾
3
SEU With silencer Gx, G¼, Gy, G½ Gx, G¼, Gy, G½ 6
Flat design
VBQF-D Without silencer Gx Gx,
QS-6
vbqf
G¼ G¼
VBQF-U With silencer Gx Gx,
QS-6
vbqf
G¼ G¼,
QS-8
Type codes
SE – x – B
Type
SE Quick exhaust valve
SEU Quick exhaust valve with silencer
Pneumatic connection
x Gx
¼ G¼
y Gy
½ G½
¾ G¾
Generation
Series A
B Series B
2014/05 – Subject to change
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Quick exhaust valves SE
Technical data
Function
-M- Flow rate
300 … 4,560 l/min
-Q- Temperature range
–20 … +75 °C
-L- Operating pressure
0.2 … 10 bar
General technical data
Pneumatic connection 1 Gx G¼ Gy G½ G¾
Pneumatic connection 2 Gx G¼ Gy G½ G¾
Pneumatic connection 3 Gx G¼ Gy G½ G¾
Nominal size [mm] 5 7 11 15 19
Valve function Quick exhaust
Type of mounting Screw-in Via through-hole
Mounting position Any
Noise level [dB(A)] 100 –
Operating and environmental conditions
Pneumatic connection 1 Gx G¼ Gy G½ G¾
Operating pressure [bar] 0.5 … 10 0.5 … 10 0.2 … 10 0.3 … 10 0.5 … 10
Operating medium Compressed air in
accordance with
ISO 85731:2010
[7:4:4]
Compressed air in accordance with ISO 85731:2010 [7:–:–]
Note on operating/pilot medium Operation with lubricated medium possible (in which case lubricated operation will always be required)
Ambient temperature [°C] –20 … +75
Temperature of medium [°C] –20 … +75
Materials
Sectional view
Quick exhaust valve
1 Housing Gx, G¼ Die-cast zinc
Gy, G½ Die-cast aluminium
G¾ Anodised wrought aluminium alloy
– Seals NBR
1
Subject to change – 2014/05
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è Internet: www.festo.com/catalogue/...
Quick exhaust valves SE
Technical data
Dimensions Download CAD data è www.festo.com
Pneumatic connection Gx Pneumatic connection G¼
1 = Inlet port 2 = Outlet port 3 = Exhaust port
Pneumatic connection Gy Pneumatic connection G½
1 = Inlet port 2 = Outlet port 3 = Exhaust port
Type Connection B1 B2 B3 B4 B5 D3 D4 L1 L2 1ß 2ß 3ß 4ß
D1 D2
SE-x-B Gx Gx 40 33 22 7 – 25 16 21 7 14 22 – –
SE-¼-B G¼ G¼ 49.5 42 27 10 30 33 29 28 10 17 – 19 19
SE-y-B Gy Gy 61.5 51.5 36 11 39.2 45.5 41 38 – 24 – 24 24
SE-½-B G½ G½ 78 66 45 13 49.5 56.5 48 47.5 – 30 – 32 32
2014/05 – Subject to change
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Quick exhaust valves SE
Technical data
Dimensions Download CAD data è www.festo.com
Pneumatic connection G¾
Type Connection B1 B2 D2 H1 H2 H3 L1 L2 L3
D1
SE-¾ G¾ 60 42 8.5 70 20.5 9 80 64 40
Ordering data
Pneumatic connection Standard nominal flow rate qnN at 6 > 5 bar Weight Part No. Type
Pressurisation 1 > 2 Exhausting 2 > 3
1 2 3 [l/min] [l/min] [g]
Gx Gx Gx 300 660 75 9685 SE-x-B
G¼ G¼ G¼ 960 1,200 100 9686 SE-¼-B
Gy Gy Gy 2,880 2,760 125 9687 SE-y-B
G½ G½ G½ 4,560 6,480 200 9688 SE-½-B
G¾ G¾ G¾ 2,500 7,500 710 2280 SE-¾
Subject to change – 2014/05
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è Internet: www.festo.com/catalogue/...
Quick exhaust valves SEU
Technical data
Function
-M- Flow rate
300 … 4,560 l/min
-Q- Temperature range
–20 … +75 °C
-L- Operating pressure
0.2 … 10 bar
General technical data
Pneumatic connection 1 Gx G¼ Gy G½
Pneumatic connection 2 Gx G¼ Gy G½
Nominal size [mm] 5 7 11 15
Valve function Quick exhaust
Type of mounting Screw-in
Mounting position Any
Noise level [dB(A)] 85 85 83 86
Operating and environmental conditions
Pneumatic connection 1 Gx G¼ Gy G½
Operating pressure [bar] 0.5 … 10 0.5 … 10 0.2 … 10 0.3 … 10
Operating medium Compressed air in accordance
with ISO 85731:2010 [7:4:4]
Compressed air in accordance with ISO 85731:2010 [7:–:–]
Note on operating/pilot medium Operation with lubricated medium possible (in which case lubricated operation will always be required)
Ambient temperature [°C] –20 … +75
Temperature of medium [°C] –20 … +75
Materials
Sectional view
Quick exhaust valve
1 Housing Gx, G¼ Die-cast zinc
Gy, G½ Die-cast aluminium
– Seals NBR
1
2014/05 – Subject to change
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è Internet: www.festo.com/catalogue/...
Quick exhaust valves SEU
Technical data
Dimensions Download CAD data è www.festo.com
Pneumatic connection Gx Pneumatic connection G¼
1 = Inlet port 2 = Outlet port 3 = Exhaust port
Pneumatic connection Gy Pneumatic connection G½
1 = Inlet port 2 = Outlet port 3 = Exhaust port
Type Connection B1 B2 B3 B4 D3 D4 D5 L1 L2 ß 3ß 4ß
D1 D2
SEU-x Gx Gx 33 – 22 7 25 16 – 21 7 22 – –
SEU-¼ G¼ G¼ 42.5 30 27 9.5 33 – 29 28 10 – 19 19
SEU-y Gy Gy 71 39 36 11 45.5 – 41 38 – – 24 24
SEU-½ G½ G½ 90.5 49.5 45 13 56.5 – 48 47.5 – – 32 32
Ordering data
Pneumatic
connection
Standard nominal flow rate qnN
at 6 bar > 5 bar
Standard flow rate qN at
6 bar > 0 bar
Weight Part No. Type
Pressurisation 1 > 2 Exhausting 2 > 3 Exhausting 2 > 3
1 2 [l/min] [l/min] [l/min] [g]
Gx Gx 300 550 1,000 65 4616 SEU-x
G¼ G¼ 960 1,100 2,300 120 6753 SEU-¼
Gy Gy 2,880 2,280 4,680 160 6755 SEU-y
G½ G½ 4,560 4,020 6,500 320 6822 SEU-½
Subject to change – 2014/05
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Quick exhaust valves SE/SEU
Accessories
Mounting bracket HSE
For attachment of quick exhaust valve
SE/SEU, irrespective of cylinder.
Material:
Anodised wrought aluminium alloy
Note on materials:
RoHS-compliant
Dimensions and ordering data
For connecting
thread
D D1 H H1 H2 L L1 R Weight Part No. Type
[g]
Gx 10 4.5 11 6 13.5 40 30 10 5.1 8710 HSE-x
G¼ 13.2 4.5 11 6 17 42 32 14 6.4 8711 HSE-¼
Gy 16.8 5.5 13 7 23.5 54 42 13 9 8712 HSE-y
G½ 21 5.5 16 8 29 66 50 17 14 8713 HSE-½
