GENERAL APPLICATIONS
Thanks to their unique combination of reliability and compactness, CVB CHK Series valves, used to prevent back flow in the line, have excellence performances, easy maintenance, guaranteeing high level of reliability and serviceability.
Check valves features and design make them fit for purpose in shut-off duty and back flow reduction.
CHK Check valves are available in the following designs: Ball, Swing, Tilting disc and Nozzle.
Core Features
- No external moving parts
- Soft or metal seated
- Antistatic device
- Fire safe
- Antislam system
Benefits of CHK Series
Metal seat design to:
- Prevent wear
- Guarantee zero leackage
- Guarantee longer service life
- Allow for low operating torques
- Achieve tight seal from bi-directional pressure
- Resist to corrosion and erosion
Soft seat design to:
- Prevent wear
- Guarantee zero leackage
Actuation: only on CHK - S and CHK - N series
- Top flange allows easy coupling to manual, pneumatic and electric actuators
- ISO 5211 standard
Product Specifications
Body Styles |
CHK - B Ball check |
| CHK - S Swing check | |
| CHK - T Tilting disc check | |
| CHK - N Nozzle check | |
Production Range |
CHK - B 1/2” – 6” ANSI CI.150 - 2500 |
| CHK - S 2” – 24” ANSI CI.150 - 2500 larger size upon request |
|
| CHK - T 1/2” – 8” ANSI CI.150 - 2500 | |
| CHK - N 2” – 24” ANSI CI.150 - 2500 larger size upon request |
|
Applicable Standards |
Design: ANSI B16.34 / API 6D/ API 608 / ISO 17292 |
| Face to face: API 6D | |
| Flange: B16.5/ B16.47 | |
| Testing: API 598 | |
| Fugitive emission: ISO 150484-1 | |
| Fire test: BS 6755–API607-ISO FDIS 10497 NORSOK |
Seat |
NBR / EPDM / Viton / PTFE / Hypalon / Neoprene |
Materials |
Carbon Steel |
| Stainless Steel | |
| Alloy Steel | |
| Duplex - SuperDuplex | |
| Monel | |
| Aluminium bronze | |
| Titanium | |
| Hastelloy | |
| Austenitic Steel | |
| Inconel | |
Ratings |
ANSI CI.150 – 300 – 600 – 900 – 1500 – 2500 |
End Connections |
Wafer / Flanged / Buttwelded ends / Threaded |
