Holmbury / HQ Series

Description:

Flat Face Couplings HQ Series

Coupling Category

Flat Face Couplings

Manufacturer

Holmbury

Excavator hammer circuits and other applications involving high pressure pulses. Construction plant, mobile equipment, general industrial, nuclear, mining and agricultural. Applications involving dusty or dirty environments and where oil loss on disconnection cannot be tolerated.

ADVANTAGES
  • Flat mating faces are easily wiped clean to prevent the ingress of contaminants.
  • Improved flow path minimises the pressure drop.
  • Non-spill design avoids fluid loss during connection and disconnection.
  • No air intrusion during connection.
  • Locking sleeve prevents accidental disconnection.
  • Zinc nickel surface treatment eliminates chrome 6 and exceeds 200 hour salt spray tests.

STANDARDS
Exceeds the performance requirements of ISO 16028 (2006) and fully conforms dimensionally.

MATERIALS

Carbon steel body, treated to increase hardness and corrosion resistance, nitrile seals.

CONNECTION / DISCONNECTION UNDER PRESSURE

Connection with residual pressure in the line will be difficult or impossible.
For applications where connection under pressure is required, a Holmbury APM male coupling, or a screw coupling from either the HSC, VP or VEP ranges is recommended.
Disconnection of any quick connect / quick release coupling whilst under full system pressure can be very dangerous and should not be attempted.


DIMENSIONS (mm except where stated)
Size Nominal Diameter A* B C D ØE F G* ØH ØI ØK Weight (kg)
HQ10 10 3/8" 27 30 60 32 69 113.5 29 32 19.8 0.4
HQ10 10 1/2" 27 30 63 32 75 121.5 29 32 19.8 0.4
HQ12 12 1/2" 36 36 71 38 83.5 138 40 40 24.5 0.7
HQ12 12 3/4" 36 36 71 38 83.5 138 40 40 24.5 0.7
HQ19 19 3/4" 46 46 84 47 98.5 161 50 50 30 1.35
HQ19 19 1" 46 46 84 47 98.5 161 50 50 30 1.35
* Dimensions for BSP and NPT threads. Other threads available.


Pressure Size HQ10 HQ12 HQ19
Maximum working pressure coupled 375 350 350
Burst pressure coupled 1500 1500 1450
Burst pressure male 1200 1200 1200
Burst pressure female 1200 1050 1050
Holmbury / HQ Series
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   Reproductive Harm -
   www.P65Warnings.ca.gov