
Quick Couplings
HQP Series – Features
- MAWP: 10,000 psig (690 bar)
- Body material: high tensile 316 SS
- a variety of O-ring materials optional
- Push-and-pull type quick coupling without check valve
- Flow coefficient up to 8.2
- Locking mechanism with large contact area for for safer and more reliable connections of coupler and nipple.
HQP Series Construction
Locking mechanism with large contact area for safer and more reliable connections of coupler and nipple.

Design structure to prevent error in operation. When coupling or uncoupling, the sliding sleeve is able to push only after aligning the dowel pin with the sleeve groove to prevent any accidental disconnection and potential risk if the system is under pressure.
HQB Series – Features
- MAWP: 10,000 psig (690 bar)
- A variety of O-ring materials optional
- Material: high tensile 316 SS and 17-4PH
- Flow coefficient up to 0.53
- Screw type quick coupling with check valve
- Withstand full working pressure when disconnected
HQB Series Construction

With metal ball sealing check valve.
HQS Series – Features
- MAWP: 20,000 psig (1379 bar)
- A variety of O-ring materials optional
- Body material: high tensile 316 SS and 17-4PH
- Flow coefficient up to 3.6
- Screw type quick coupling without check valve
HQS Series Construction

HQC Series – Features
- MAWP: 30,000 psig (2068 bar)
- A variety of O-ring materials optional
- Material: high tensile 316 SS and 17-4PH
- Flow coefficient up to 0.66
- Coupler with check valve as standard, nipple with/without check valve available
- Coupler and nipple with check valve can withstand MAWP when disconnected
- Compact design and variety of end connections as optional
HQC Series Construction
The surface hardening process is adopted in the contact surface of the nipple and the ball, which improves the hardness and strength of the surface to ensure safer and more reliable connections of coupler and nipple.
For more information please contact our sales team: email sales@nvfcl.com or call at 01942601209