Edwards vacuum Vacuum pump products Vacuum pump services & repairs Vacuum spares and vacuum parts Vacuum manufacturers
Home About Absolute Vacuum Vacuum pump resources Contact Absolute Vacuum Newsletter Modulyo Freeze Drying

Vacuum valves: Edwards (formely known as BOC Edwards) vacuum valves

Edwards QSB Quarter Swing Butterfly Valves Manual and Pneumatic

Edwards vacuum valves - overview
Edwards SP Speedivalve manual operation isolation valves - NW flanges | Edwards SP manual operation isolation valves - NPT and BSP
Edwards IBV series vacuum ball valves | Edwards PVMK manual operation isolation valves | Edwards PVPK pneumatic operation isolation valves
Edwards PVEK solenoid isolation valves | Edwards LCPVEK solenoid isolation valves | Edwards SIP VP soft start isolation valves
Edwards BRV backing/roughing valves | Edwards GV manual & pneumatic gate valves | Edwards GVA/AVA Aluminium gate/angle valves
Edwards industrial quarter swing butterfly valve | Edwards QSB quarter swing butterfly valves | Edwards electroneumatic valves
Edwards AV5A air admit valve | Edwards AV10K air admit valve | Edwards IPVA10EK solenoid air admit valve
Edwards LV10K fine control needle valve | Edwards FCV10K fine control needle valve

Edwards (formerly BOC Edwards) quarter swing valves are compact, quick acting, high conductance isolation valves. The QSB valves have a polished, stainless steel, ISO flanged body with fluoroelastoer 'O' ring sealed valve plate and shaft. The valve plate 'O' ring groove is vented to help maintain a stable high vacuum. The valve shaft 'O' rings and bearings are lubricated with Fomblin grease to prevent gas bursts from the behind the shaft seals.

The Pneumatically operated valves each have micro switches to indicate when the valve is open or closed. The QSB3P, QSB100P and QSB160P valves have a double acting actuator to open and close the valve. The QSB250P valve has a single acting actuator to open the valve and a spring to close the valve. The actuator link of all pneumatic operation valves are available as optional accessories: Use 5 port control valves for the double acting actuator on the QSB63P, QSB100P and QSB160P valves and use the 3 port control valves for the single acting actuator on the QSB250P valve. Use Co-seals for flange sealing.

Technical data - Edwards QSB Quarter Swing Butterfly Valves Manual and Pneumatic

Pressure range: 10^-9 to 3000 mbar / 8x10^-10to 2250 Torr

Maximum pressure differential: 1000 mbar/750 Torr

Operating temperature range: 5 – 40°C

Maximum baking temperature: 200°C (without actuator)

Leak rate: > 10^-9mbar | s ^-1/

<8x10^-10Torr | s ^-1

Pneumatic valves only:

Reliability MTTF: >1.5 x 10⁵cycles

Pneumatic connectors: 1/8 in BSP, for 6mm OD tube

Number of connectors

QSB63, QSB100, QSB160: 2

QSB250: 1

Microswitch rating: 5 A at 48V

Microswitch connectors:

QSB63, QSB100, QSB160: Solder tags

QSB250: Screwed connector

Technical data - Edwards QSB Quarter Swing Butterfly Valves Manual and Pneumatic

Valve	QSB63 QSB63P	QSB100 QSB100P	QSB160 QSB160P	QSB250 QSB250P
Flange size	ISO63	ISO100	ISO160	ISO250
Conductance* (\| s^-1)	420	1250	2700	13000
Operating torque** (Nm)	4	5.4	7.5	19.5
Pneumatic pressure*** (bar)
Recommended	2.8 to 4.2			4 to 6
Minimum	2.4			3.8
Maximum	7
Pneumatic pressure** (psi)
Recommended	40.6 to 61			58 to 87
Minimum	34.8			55
Maximum	101.5

*Conductance of equivalent tube length

** Manual operation
***Pneumatic operation

Edwards QSB Quarter Swing Butterfly Valves Manual and Pneumatic

Dimensions in mm

ØL

QSB63

QSB63P

QSB100

QSB100P

QSB160

QSB160P

QSB250

QSB250P

130

165

225

335

142.5

250

111

105

125

123

170

166

242

230

130

180

215

23.5

43.5

24.5

104.5

48.5

95.5

235

238

263

-337*

108

126

166

224

110

145

200

310

*QSB250P Pneumatic actuator is to the right of the valve shaft

Edwards QSB Quarter Swing Butterfly Valves Manual and Pneumatic

Dimensions in inches

ØL

QSB63

QSB63P

QSB100

QSB100P

QSB160

QSB160P

QSB250

QSB250P

5.07

6.44

8.78

13.07

2.46

3.74

5.56

9.75

0.16

0.31

0.47

4.33

4.10

4.88

4.80

6.63

6.47

9.44

8.97

5.07

7.02

8.39

0.92

1.01

1.70

2.22

0.96

1.60

2.15

4.08

0.74

1.29

1.89

3.72

9.17

9.28

10.26

-14.70

4.21

4.91

10.26

8.74

4.29

5.66

7.80

12.09

* QSB250P Pneumatic actuator is to the right of the valve shaft

Edwards QSB Quarter Swing Butterfly Valves Manual and Pneumatic

Ordering information

Product

Ordering number

QSB63 manual operation*

QSB63P double pneumatic operation*

QSB100 manual operation*

QSB100P double pneumatic operation*

QSB160 manual operation*

QSB160P double pneumatic operation*

QSB250 manual operation**

QSB250P single pneumatic operation**

* Supplied wit 1 Co-Seal

** Supplied with 1 trapped 'O' ring

Spares

QSB63/QSB63P valve

Butterfly plate 'O' ring (fluoroelastomer)

Shaft Seal 'O' ring (5) (fluoroelastomer)

QSB100/QSB100P valve

Butterfly plate 'O' ring (fluoroelastomer)

Shaft Seal 'O' ring (5) (fluoroelastomer)

QSB160/QSB160P valve

Butterfly plate 'O' ring (fluoroelastomer)

Shaft Seal 'O' ring (5) (fluoroelastomer)

QSB250/QSB250P valve

Butterfly plate 'O' ring (fluoroelastomer)

Shaft Seal 'O' ring (5) (fluoroelastomer)

B24202000

B24203000

B24602000

B24603000

B24802000

B24803000

B43002000

B43003000

H02106161

H02106010

H02106055

H02106010

H02106208

H02106011

H02106095

H02106121