Holmbury Inc

WHY CHOOSE HOLMBURY?

Design and Engineering

Holmbury’s products are designed by engineers with years of experience, insight and know-how. Holmbury also maintains strict control of each manufacturing function, optimising quality at each step along the process, meeting even the most demanding customer specifications.

Precision Engineering

Holmbury utilises the advantages of global manufacturing expertise to provide customers with timely, precise and cost-effective manufacturing capabilities.

Delivery

Holmbury is dedicated to supplying quality products in the shortest possible time frame. It does so by utilising fully automated systems that co-ordinate and track production and evaluate performance.

Quality Certifications

All Holmbury products are subject to rigorous laboratory and field testing, and each product is certified in conformity to strict certification standards. Holmbury is an ISO 9001-2015 certified company.

The Essential Do’s

• Always wipe the two mating faces clean before connecting
• It is recommended that Dust Caps and Plugs be used when the couplings are disconnected
• Always align the external locking ball (if used) with the notch in the locking sleeve and then pull the locking sleeve back fully to disconnect
• If a coupling sticks, first check that pressure has been released. Ensure the locking ball and notch in the locking sleeve are aligned, pull back the sleeve and twist the couplings apart. Sticking is normally caused by dirt in the coupling or physical damage due to abuse
• Connect and disconnect new couplings two or three times to work the PTFE seals. Sometimes a new coupling will stick if the seal has not been worked
• When fitting couplings, only apply the spanner or grips to the hexagon and nowhere else
• Avoid damage to the coupling faces. Burrs and scratches cause damage to the seals and cause leaks. They can also impede connection and disconnection of the couplings
• Periodically lubricate the internal locking balls on the female half of the coupling with silicone grease
• All hydraulic systems should be protected with a good quality filter, minimum 25μ filtration is recommended. The filter should be changed at regular intervals, in accordance with the manufacturer’s instructions. Adequate filtration ensures the oil remains free of contaminates that can damage the internal seals of the coupling

The Essential Don’t's

• Never attempt to reconnect using a damaged half coupling, as this will destroy the seals in the mating half and necessitate replacement of both halves
• Do not leave the coupling where it may be run over by a vehicle or otherwise crushed. This will distort the sleeve and prevent connection and disconnection
• Never try to turn the sleeve when the coupling is disconnected since this will cause the locking ball to jam under the locking sleeve and damage the coupling
• Never try to strip the coupling down. There are no user serviceable parts. If the coupling is damaged it should be replaced with a new coupling
• Never hit the centre poppet of the coupling to try and release locked in pressure. This can cause irreparable damage to the coupling and serious injury
• When fitting couplings, never clamp on the sleeve of the female or nose of the male – this will cause distortion and damage
• Never subject the couplings to external forces, especially side load. This can reduce the life of the coupling or cause failure
• Never allow the torsional forces transmitted from hoses to unscrew/screw together couplings. Utilise rotary couplings (See Holmbury Rotary Couplings)
• Never use a coupling as a plug
• Do not connect and disconnect with pressure in the line, unless the coupling type is specifically designed to do so
• Connecting a Holmbury coupling half with another manufacturer’s coupling half could damage internal seals and invalidate warranty. Check with Holmbury before mismatching couplings