BNW Block Series
Sanitary Diaphragm Valves
The BNW block series contains all the advantages of the BNW standard series, with bespoke designs and features ensuring minimum hold-up volume.
Key Features
Available in line sizes up to 4”
Single polymer bonnet external seal
Pneumatic or manual interchangeability
Standard & bespoke multiport / block options
Typical Applications
Shut-off functionality, control functionality, back-pressure control, automated and with switching/signalling for all upstream and downstream processes (bioreactor, filtration, chromatography, centrifugation etc)
Key Specifications
| Materials of Construction | Cleanliness | Specifications | Options |
|---|---|---|---|
| 316L stainless body |
Manufactured in Clean White Room |
100% Leak tested as per ASME BPE / ANSI FCI 70/2 Class VI |
Manual or pneumatic |
| TFM1600 / Reinforced EPDM Diaphragm |
Helium leak-tight external sealing |
USP Class VI <87> <88> |
Multiple block orientations and configurations |
| Barstock / forging-only source |
SIP-validated |
Electropolished as per ASME BPE, ASTM A967 |
4/20mA switching / signalling automation |
| Stainless thin-wall (deep-drawn) actuator |
Passivated as per ASME BPE, ASTM B912 |
Instrumentation |
|
| 6 - 200 Cv (flow coefficient) |