22 September, 2019

Flat face couplings made to the ISO 16028 Standard

15 November, 2018

The HQ Series flat face couplings are Holmbury’s flagship products, known globally for their leak-free performance in high pressure pulse, hammer circuits and many other applications. They are a preferred choice for many global OEMs.

The couplings are made of carbon steel with zinc nickel plating (1200 hours with no red rust in salt spray tests) and are fitted with Nitrile seals (Viton seals available). They are also available in AISI 316 stainless steel.

A safety locking sleeve is fitted as standard to prevent accidental disconnection. The flat faces are easily wiped clean and the flat face design prevents fluid loss during disconnection. Also, the coupling allows for minimal inclusion of air and contaminants during connection and has bidirectional flow. Accessories include dust caps and plugs, and parking stations are available.


• Operating temperatures (With Nitrile seals): -40degC (-40degF) to 106degC (223degF), (With Viton seals): -20degC (-4degF) to 200degC (392degF).

• Couplings have been tested to the ISO 18869 Standard.


• Hammer circuits.

• High pressure pulse applications.

• Leak-free environments.

• Construction plant, mobile equipment, general industrial, nuclear, mining and agricultural industries.


Buyers' Guide Search
Search for UK supplier by name
Browse by Product Group.
Latest Issue To view a digital copy of the latest issue of Hydraulics & Pneumatics Magazine, click here.

For a FREE subscription please click here

Previous IssueTo view a digital copy of the JUNE 2019 issue of Hydraulics & Pneumatics Magazine, click here.

BFPA YearbookTo read the latest BFPA Yearbook, click here
BFPA Training AcademyClick the image to go to the BFPA Training Academy website
Compressed Air & Vacuum Technology Guide 2018To read the official BCAS Compressed Air & Vacuum Technology Guide 2018 click here
Smart Machines & FactoriesSmart Machines & Factories Magazine - the UK's first dedicated journal focusing on the fourth industrial revolution and transforming to a smart manufacturing era.
Offshore Europe JournalOEE
SPE Offshore Europe
Hy-Pro FiltrationWEB LOCATOR