Vacuums

Backing/Roughing Valves

Backing/Roughing Valves
  • 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

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.

Technical Data





BRV10K
BRV10PK
BRV25K
BRV25PK
Leak rate

<10-9 mbar l/s
<10-9 mbar l/s
<10-9 mbar l/s
<10-9 mbar l/s
Max baking temperature (pneumatic)
°C 70 70 70 70
Max baking temperature (Manual)
°C
90 90 90 90
Reliability MTTF
cycles 100000 100000 100000 100000
Recommended air pressure
bar 2.8 - 4.2
2.8 - 4.2
2.8 - 4.2
2.8 - 4.2
Weight (Stainless Steel)
g 350 380 860 900