MQS-FEH
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impulse resistant quick coupling

The future of quick couplings... Manuli Hydraulics has long been established as one of the global leaders in the design and manufacture of premium quality quick couplings. The Q.Safe range of quick couplings is widely considered to represent the gold standard in both performance and resilience, but even the best can be made better. All Q.Safe products are designed to meet and exceed customer expectations and Manuli Hydraulics’ focus on robustness and longevity, coupled with our decades of experience producing some of the best performing quick couplings available today, means that the Q.Safe...

mqs-feh - high frequency impulse resistance Designed to withstand extreme levels of high frequency impulses at very high pressures, the new MQSFEH extra heavy-duty quick coupling uses a new and unique (pat. pending) locking system. This system ensures that in even the most severe high-frequency impulse conditions, the MQS-FEH coupling will provide a long lasting, secure and leak-free seal. This is made possible by the innovative and unique design of the couplings, where potential failure modes previously accepted as inevitable, have been addressed, solved and eradicated. MQS-FEH is...

What makes mqs-feh ideal for high-frequency impulse applications? The locking mechanism on a traditional quick coupling uses an arrangement of hardened steel ball bearings which locate in a groove on the male coupling, and which are held in position by a retaining ring on the female coupling. When the hydraulic system impulses the male and female parts of the coupling try to pull themselves apart, the ball-bearings prevent this from happening. Each time the system impulses the hardened ball bearings are forced into the softer metal of the coupling, where they leave a tiny impression in the...

don’t just take our word for it... MQS-FEH in service on an 80L hydraulic hammer as of this writing the coupling had been in service for over 300 hours with no discernible signs of damage or wear caused by this high-frequency impulse application.

enhanced disconnection prevention in high vibration applications With any quick coupling it is important to be certain that it will not disengage itself accidentally, especially during operation when it can often come into contact with external surfaces which could conceivably cause it to de-couple. The risk that a coupling could accidentally disconnect is even greater in high-frequency impulse applications where it is possible for the coupling to be literally shaken loose. To combat this, whilst the MQS-FEH quick coupling is connected with a simple push like many other traditional quick...

MQS-FEH FLAT FACE EXTRA HEAVY DUTY Pressure Drop Pressure Drop [PSI] Pressure Drop Flow Rate [l/min] Flow Rate [US gallons/min] RATED WORKING WORKING FLOW OIL SPILLAGE PRESSURE PRESSURE CONNECTION at 0.2 MPa Connection/ CONNECTED DISCONNECTED EFFORT Disconnection of pressure (Dynamic) (Dynamic) drop CONNECTION WITH FEMALE UNDER PRESSURE (MALE AT 0 MPa) MINIMUM BURST PRESSURE Male cubic inch MPa PSI Connection with Male under pressure not allowed; Disconnection under pressure not allowed The rated flow represents the normal operating condition. The maximum recommended flow rate is equal to...

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