H90 and HQ90 Series

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90° flat face couplings made to the ISO 16028 Standard

Construction ApplicationsIndustrial Applications

Holmbury’s H90 and HQ90 Series is designed for use in applications that require a 90° elbow in the hydraulic circuit, such as digger booms. The right angle design allows for easy mounting without the need for additional fittings, reducing potential leakage paths and cost.
Min Spill TechMin Spill
Carbon Steel Zinc Nickel Materials ISO 16028 Flat Faced Couplings ISO Standard
Flat Face CouplingsHQ90 v1

Features

  • The H90 and HQ90 Series is designed to connect with the HQ and HCP Series flat face couplings
  • 90° elbow incorporated into the coupling
  • The HQ90 benefits from a reduced size backend, allowing installation into tighter spaces
  • Flat faces are easily wiped clean
  • Allows for minimal inclusion of air and contaminants during connection
  • Flat face design prevents fluid loss during disconnection
  • Bidirectional flow














Accessories

  • Dust Caps are available for the H90 and H90 Series














Construction

  • Carbon steel with zinc nickel plating (1200 hours with no red rust in salt spray tests)
  • Fitted with Nitrile seals














Applications

  • Leak free environments 
  • Construction attachments
  • Mobile equipment
  • General industrial
  • Agricultural 
  • Skid steer loaders














AVAILABLE SEALS AND TEMPERATURE RANGE

All carbon steel products have Nitrile Butadiene Rubber seals fitted as standard. All stainless steel products have Fluoro-elastomer Rubber (Viton®) seals fitted as standard. Special seal materials available on request.

0°

106°C 223°F

Nitrile

120°C 248°F

EPDM

200°C 392°F

Viton®

300°C 572°F

Kalrez®

0°

-20°C -4°F

Viton®

-25°C -13°F

Kalrez®

-40°C -40°F

Nitrile

-50°C -58°F

EPDM

Abbreviation Trade Name Chemical Name Min Temp. Max Temp.
NBR XNBR Chemigum®, Hycar8, Breon®, Butakon®, Butacril®, Buna-N®, Perbunan®, Paracril®, Krynac®, Europrene-N®, Nipol® Nitrile Butadiene Rubber Carboxylated Nitrile Rubber -40°C (-40°F) 106°C (223°F)
FKM (FPM) Dai-el®, Fluorel®, Tecnoflon®, Viton® Fluoro-elastomer Rubber -20°C (-4°F) 200°C (392°F)
EPR EPDM Buna-AP®, Dufral®, Epsyn®, Nordel®, Epcar8, Keltan®, Royalene®, Polysar-EPDM® Ethylene Propylene Copolymer Ethylene Propylene Terpolymer -50°C (-58°F) 120°C (248°F)
FVMQ Silastic 1S®, FSE® Fluorosilicone Rubber -65°C (-85°F) 170°C (338°F)
FFKM Perlast®, Kalrez®, Chemraz®, Kaflon® Perfluoroelastomer -25°C (-13°F) 300°C (572°F)