Overview
Swift & Secure: Self-Acting & Quick closing in less than 0.3 seconds!Â
![](https://www.inditechvalves.com/wp-content/uploads/2023/12/quick-closing-non-return-valves-thumb.jpg)
IndiTech’s tilting-disk type QCNRV is a specialised type of check valve known for its rapid closure and suitability for handling pulsating flows and compressible fluids. Instead of a hinged disc, this NRV uses an innovative design of a disc mounted on an eccentric shaft, which provides excellent sealing capabilities. The tilting disc ensures simultaneous regulation of flow over the disc and under the disc. This ensures dynamic balancing of the disc, enabling steady operation of the valve under all flow conditions. The disc’s conical shape and angled seat create a wedging effect during reverse flow, causing it to close rapidly and seal tightly.
IndiTech’s Series 350 is the first Tilting-Disc type QCNRV designed and manufactured in India.
Ensure instant shutoff with our industry-leading Quick Closing Non-Return Valves.
Applications
Turbine Trip Protection:
Steam Extraction/Bleed Line:
Cold Reheat Line:
Technical Data
350
NPS 4 To NPS 24 (DN100 To DN600)
ANSI CL150 To CL600
Steam/Water/Gas
![quick closing non-return valve](https://www.inditechvalves.com/wp-content/uploads/2024/02/QCNRV_techni.png)
Flanged/Butt Welded
A216 WCB; A217 WC6/WC9; A351 CF8M
Normal operation (NRV) - Automatic
Emergency closing - Pneumatic
Features
- Self-acting and quick closing with the pneumatic actuator in less than 0.3 seconds
- Lightweight construction compared to bulky swing-type QCNRV
- Low-pressure loss
- Equipped with counterweight for balancing of disc
- Manual lever or test solenoid valve is provided to check disc movement in running condition
- Chatter-free operation: suitable for pulsating flows
- Guaranteed leak tightness as per API 598
- Suitable to be installed on horizontal as well as vertical pipelines
- Maintenance-free, long service life