PY-PFF · PY-PF · PYK-BS · CCC certified
PY-PFF Smoke Fire Damper
DC24 V actuation, 280 °C thermal cut-off, volt-free status to the fire panel.
A CCC-certified combination smoke and fire damper for smoke extraction shafts. The actuator opens on a 24 V signal from the fire panel and the 280 °C fuse closes the blade when duct temperature reaches the critical point, with a volt-free contact confirming position. Multi-blade and plate-type smoke valves share the same certification.
Specification
| Operation | DC24 V electric actuator + manual reset; 280 °C thermal fuse closes |
|---|---|
| Signals | Open / closed volt-free contacts to fire panel |
| Blade | Galvanised steel, stainless steel or painted steel |
| Sizes | W × H matched to duct dimensions; custom sizes standard |
| Certification | CCC — GB 15930-2007 · CCCF-CPRZ-19:2019 |
| Variants | PY-PF multi-blade smoke valve · PYK-BS plate-type smoke outlet |
Design notes
- Certified assemblyValve, actuator and fuse tested as a single CCC-listed product, not a collection of parts.
- Fail-safe closingSpring-return blade closes on power loss or fuse operation.
- Manual overrideSix-metre chain or handle reset for commissioning and inspection.
- Leakage controlBlade seals keep class-level leakage within GB 15930 limits.
Options
- 24 V or 220 V actuator
- End switches
- Remote reset chain
- Stainless blade
- Access door
Applications
- Smoke extraction shafts
- Fire compartments
- Atrium smoke systems
- Metro stations
