DAWSONS-TECH Series : CQ21 Stainless Steel Double shut- off Flat Face Quick Connect Coupling is designed and manufactured to meet requirements for sealing media in Chemical Processing, Chemical Dispensing, Food Processing and other corrosive applications.
DAWSONS-TECH Series : CQ21 Double shut-off Flat Face Quick Connect Couplings are of Industries interchange design and inter changeable with ISO 16028 Flat Face Couplings.
DAWSONS-TECH Series : CQ21 Double shut-off Flat Face Quick Connect Couplings are of Industries interchange design and inter changeable with ISO 16028 Flat Face Couplings.
Features :
- Available in material SS316 with Fluorocarbon seals as standard.
- Flat face design is easy to clean, reducing the inclusion of contamination inside the hydraulic circuit.
- Prevent fluid loss during disconnection and reducing fluid spillage to the environment.
- Easy to operate, Bidirectional flow.
- Seal with PTFE back-up rings designed to ensure reliable and leak free sealing in high Pressure application.
- Ball locking mechanism provide safe and reliable connections. Every Coupling is pressure tested.




Product Range & Operating Parameters :
- Available Size: 1/4” to 1” pipe connection
- Pressure Ratings: Up to 5000 PSI at CWP
- Temperature Rating : Up to to 180o C
- End Connections: Available with BSPP, BSPT, NPT etc. Pipe threads
Applications :
- Chemical Processing
- Chemical Dispensing
- Food Processing
- Other Corrosive Fluids and Environment
Material of Construction :


COUPLER
Sr. No. | Description | Material |
1 | Sleeve | SS316 |
2 | Ball | Stainless Steel |
3 | Lock Ring | SS316 |
4 | Retainer | SS316 |
5 | Face Pin | SS316 |
6 | Captive Seal | Fluorocarbon |
7 | Spring Retainer | Fluorocarbon |
8 | Spring | SS316 |
9 | Backup Ring | PTFE |
10 | ‘O’ Ring | Fluorocarbon |
11 | Housing | SS316 |
12 | Packing | PTFE |
13 | ‘O’ Ring | Fluorocarbon |
14 | Adaptor | SS316 |
15 | Plug Flow | Brass |
16 | ‘O’ Ring | Fluorocarbon |
17 | End Connector | SS316 |


PLUG
Sr. No. | Description | Material |
1 | Plug | SS316 |
2 | Spring Retainer | SS316 |
3 | Backup Ring | PTFE |
4 | ‘O’ Ring | Fluorocarbon |
5 | Pusher Pin | SS316 |
6 | Spring | SS316 |
7 | Packing | PTFE |
8 | Plug | SS316 |
9 | ‘O’ Ring | Fluorocarbon |
10 | End Connector | SS316 |
Standard Configuration Dimensions :


End Connection Size | Dimensions in mm / inch | Dawsons-TechPart No. | |||||||
A | B | C | D | E | F | G | A/F-1 | A/F-2 | |
1/4" BSP | 28.0 | 23.8 | 58.0 | 16.1 | 16.1 | 48.5 | 22.0 | 22.0 | CQ21-CP-FF4RG-SSV |
1.10'' | 0.94'' | 2.28'' | 0.63'' | 0.63'' | 1.91'' | 0.87'' | 0.87'' | ||
3/8” BSP | 32.0 | 26.0 | 68.0 | 19.7 | 19.7 | 55.5 | 24.0 | 24.0 | CQ21-CP-FF6RG-SSV |
1.26'' | 1.02'' | 2.68'' | 0.78'' | 0.78'' | 2.18'' | 0.94'' | 0.94'' | ||
1/2" BSP | 38.1 | 28.9 | 73.5 | 19.7 | 19.7 | 59.0 | 27.0 | 27.0 | CQ21-CP-FF8RG-SSV |
1.50'' | 1.14'' | 2.89'' | 0.78'' | 0.78'' | 2.32'' | 1.06'' | 1.06'' | ||
3/4" BSP | 42.0 | 38.6 | 80.5 | 24.5 | 24.5 | 75.5 | 35.0 | 35.0 | CQ21-CP-FF12RG-SSV |
1.65'' | 1.52'' | 3.17'' | 0.96'' | 0.96'' | 2.97'' | 1.37'' | 1.37'' | ||
1” BSP | 48.0 | 44.8 | 101.6 | 30.0 | 30.0 | 93.0 | 41.0 | 41.0 | CQ21-CP-FF16RG-SSV |
1.89'' | 1.76'' | 4.0'' | 1.18'' | 1.18'' | 3.66'' | 1.62'' | 1.62'' | ||
1/4" NPT | 28.0 | 23.8 | 58.0 | 16.1 | 16.1 | 48.5 | 22.0 | 22.0 | CQ21-CP-FF4N-SSV |
1.10'' | 0.94'' | 2.28'' | 0.63'' | 0.63'' | 1.91'' | 0.87'' | 0.87'' | ||
3/8” NPT | 32.0 | 26.0 | 68.0 | 19.7 | 19.7 | 55.5 | 24.0 | 24.0 | CQ21-CP-FF6N-SSV |
1.26'' | 1.02'' | 2.68'' | 0.78'' | 0.78'' | 2.18'' | 0.94'' | 0.94'' | ||
1/2" NPT | 38.1 | 28.9 | 73.5 | 19.7 | 19.7 | 59.0 | 27.0 | 27.0 | CQ21-CP-FF8N-SSV |
1.50'' | 1.14'' | 2.89'' | 0.78'' | 0.78'' | 2.32'' | 1.06'' | 1.06'' | ||
3/4" NPT | 42.0 | 38.6 | 80.5 | 24.5 | 24.5 | 75.5 | 35.0 | 35.0 | CQ21-CP-FF12N-SSV |
1.65'' | 1.52'' | 3.17'' | 0.96'' | 0.96'' | 2.97'' | 1.37'' | 1.37'' | ||
1” NPT | 48.0 | 44.8 | 101.6 | 30.0 | 30.0 | 93.0 | 41.0 | 41.0 | CQ21-CP-FF16N-SSV |
1.89'' | 1.76'' | 4.0'' | 1.18'' | 1.18'' | 3.66'' | 1.62'' | 1.62'' |