The valves have been designed particularly for the Diffstak® pumping systems, but have applications where a compact change-over valve is required in the pressure range 10-7 - 2000 mbar / 8 x 10-8 - 1500 Torr.
Technical data | |
Construction materials | |
Body and pneumatic cylinder | HE 30TF aluminum |
Lever and bonnet (manual) | Glass reinforced plastic |
Operating shaft/valve seat | Stainless steel |
Body seals, port seals, shaft seal O-ring | Fluoroelastomer |
Leak rate | |
Overall | < 10-9 mbar ls-1 |
< 8 x 10-10 Torr ls-1 | |
Across ports | < 10-9 mbar ls-1 |
< 8 x 10-10 Torr ls-1 | |
NW coupling | < 10-9 mbar ls-1 |
< 8 x 10-10 Torr ls-1 | |
Operating pressure range | 10-7 - 2100 mbar |
8 x 10-8 - 1575 Torr | |
Max baking temperature | |
Pneumatic | 70 °C |
Manual | 90 °C |
Reliability (MTTF) | 100000 cycles |
Recommended air pressure | 2.8 - 4.2 bar / 40.6 - 61 psi |
Maximum air pressure | 7.0 bar / 102 psi |
Minimum air pressure | 2.4 bar / 35 psi |
Air connections | 1/8 in BSP, for 6 mm Ø plastic or copper tube |
Microswitch rating | 24 V 1.5 A a.c. or d.c. |
Weight | |
BRV10PK | 380g / 13oz |