PC Series

Spool valve to (change or control) joystick operation

Construction Applications

Holmbury’s PC Series pattern changer spool valve is designed to switch joystick functionality on equipment such as excavators. When operators move from one machine to another, they can set-up the joystick controls to function in a familiar format. This reduces re-training time, limits accidents caused by unfamiliar controls and avoids the need to switch hoses. The pattern changer is hand operated and has four inlet ports and four outlet ports. It provides 8-way, two position control of pilot signals.
Speciality Coupling TechSpeciality Coupling
Carbon Steel Trivalent Materials

Features

  • Operated by turning the handle 90 degrees to change the joystick pattern
  • Reduction in training time when switching between machines made by different manufacturers
  • Compact design
  • Simple, reliable operations with no electronic components
  • Quick and easy to install






Accessories

Not applicable

Construction

  • Carbon steel with trivalent plating
  • Fitted with Nitrile seals






Applications

  • Switching joystick functionality between machines made by different manufacturers






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)