BNW Standard Series
Sanitary Diaphragm Valves
The BNW series contains a unique diaphragm design, eliminating the need for constant diaphragm re-tightening after SIP application, and ensuring a rapid changeout at each batch change.
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 Room environment |
100% Leak tested as per ASME BPE / ANSI FCI 70/2 Class VI |
Manual or pneumatic |
| PTFE / EPDM diaphragm high temperature (up to 150C) |
Helium leak-tight external sealing |
USP Class VI <87><88>ISO10993-6, -10, -11 |
TFM1600 / Reinforced EPDM Diaphragm |
| Barstock / forging-only source |
CIP-validated as per ASME BPE / BPPR |
Electropolished as per ASME BPE, ASTM A967 |
4/20mA switching / signalling automation |
| Stainless thin-wall (deep-drawn) actuator |
SIP-validated as per ASME BPE / BPPR |
Passivated as per ASME BPE, ASTM B912 |
6 - 200 Cv (flow coefficient) |