HS Series

General purpose screw connect poppet couplings made to the ISO 14541 Standard

Construction ApplicationsDemolition ApplicationsIndustrial Applications

Holmbury’s HS Series screw connect couplings are designed primarily for high pressure pulse applications. They can be connected under residual system pressures of up to 50 bar (735 psi). The HS Series is a cost effective, proven solution suited to many industries and applications.
Connect Under Pressure TechConnect Under Pressure
Carbon Steel Trivalent Materials ISO 14541 HS Couplings ISO Standard

Features

  • Screw connect design eliminates brinelling
  • Modular construction enables numerous thread and connection options
  • Can be connected with up to 50 bar (735 psi) residual pressure in the hydraulic circuit
  • Bidirectional flow








Accessories

  • Dust caps, plugs and seal kits are available for the HS Series








Construction

  • Carbon steel with trivalent plating
  • Fitted with Nitrile seals
  • Also available in AISI 316 stainless steel (See SHS Series)








Applications

  • Hammer circuits
  • High pressure pulse applications
  • Construction plant
  • Mobile equipment
  • Demolition








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.

106°C 223°F

Nitrile

120°C 248°F

EPDM

200°C 392°F

Viton®

300°C 572°F

Kalrez®

-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)