Backing/Roughing Valves

Edwards Backing/Roughing Valves

Edwards backing/roughing valves with ISO NW roughing and forepump terminations feature manual or pneumatic actuation. They combine the function of separate backing/roughing valves in one integral 3 port unit.

A flexible neoprene connector is supplied for the backing connection. The roughing and forepump ports terminate in the appropriate NW termination.

Easy to operate

both ports closed position

Long life

100,000 operations or more

Position indicator

on pneumatic valve

Leak tight

to better than 10-9mbar l/s

Special versions

Chemical & Gas Recirculation variants

Technical Data

Leak rate

Max baking temperature (pneumatic)

Max baking temperature (Manual)

Reliability MTTF

    mbar l/s

°C  

°C  

cycles

Edwards BRV10K

BRV10K

<10-9

70

90

100000

Edwards BRV10PK

BRV10PK

<10-9

70

90

100000

Edwards BRV25K

BRV25K

<10-9

70

90

100000

Edwards BRV25K

BRV25PK

<10-9

70

90

100000

Recommended air pressure

Weight (Stainless Steel)

bar

g

2.8 - 4.2

350

2.8 - 4.2

380

2.8 - 4.2

860

2.8 - 4.2

900

Documentation

Spectroscopy magazine

Edwards Valvula de apoyo y Desbaste

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