SP Series

High pressure screw to connect couplings

Tools ApplicationsDemolition ApplicationsIndustrial Applications

Holmbury’s SP Series screw connect couplings are designed for heavy duty applications involving very high pressures and severe pressure pulses.
High Pressure TechHigh Pressure
Carbon Steel Trivalent MaterialsStainless Steel Materials

Features

  • Screw to connect design eliminates brinelling
  • 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 SP Series







Construction

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







Applications

  • Hydraulic jacks
  • Hydraulic hammers
  • Construction plant
  • Mobile equipment, 
  • Demolition
  • Agricultural industries







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)