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

Edwards Electropneumatic control valves

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) Electropneumatic control valves can be used to control the operation of pneumatically activated vacuum valves. Control valves are available in 3 port and 5 port versions and with different electrical supply voltages and frequencies to suit your application.

*This configuration allows the use of the isolated position of the vacuum valve
** This configuration only allows the use of the roughing and backing positions of the vacuum valve

Technical data - Edwards Electropneumatic control valves

Pressure range: 10^-2 to 5000 mbar / 8x3^-4 to 3750 Torr

Leak rate: >7x10^-3 mbar | s ^-1/

<8x10^-4 Torr | s ^-1

Construction materials:

Body: Cast iron, nylon II encapsulated

Butterfly disc: 126 stainless steel

Resilient liner: Fluoroelastomer

Average life until first service*: 100000 cycles

Molecular conductance

QVA025: 250 | s^-1

QVA040: 680 | s^-1

QVA060: 2300 | s^-1

Ambient operating temperature range: -18 to 100°C

Reliability MTTF: 30000 cycles

The actuators are rack and pinion opposed-piston units available in spring return or double acting versions. The spring return models employ a unique cartridge system that offers safety, simplicity and compactness. Manual operation is also available.

Edwards Electropneumatic control valves - Microswitch position sensors

To control external vacuum process management and detect valve status two microswitches detect valve open/closed status. A pointer also gives a visual warning. The microswitch box is switching higher current signals.

Technical data - Edwards Electropneumatic control valves

We recommend that you fit a shut off valve, filter and pressure regulator to the pneumatic supply.

Pneumatic supply pressure 3 Port 5 Port |w 5 Port

bar guage 2.1 – 8 3.4 – 4.8 2.4-7

psig 30-115 50-70 35-100