Sun offers 4 sizes of cartridge capable of handling flows up to 480 lpm and pressures up to 350 bar.
Hardened poppet and seat give good life even under arduous operating conditions.
A new design of poppet and seat is fitted as standard in series 1 (to be followed in other sizes) to produce quieter operation and longer life.
A large range of pilot ratios from 1:1 up to 10:1.
A fluting arrangement on the inlet of the cartridge distributes the flow equally around the poppet.
Low hysteresis with reseat to a closed condition (leakage of less then 5 drops per minute) at 85% of cracking pressure.
Low flow Series 1 cartridges are available for most pilot ratios that fit into series 1 cavity.
A bleed through pilot on most cartridges prevents air being trapped in the pilot line, but sealed pilots available for low flow applications.
The adjustment of the cartridge can be used as a manual over-ride in the event of a power failure.
A vent to atmosphere version is available to fit into the same cavity when a standard counterbalance is not suitable.
A version is available with no pilot that fits into the standard three-port cavity for applications where a pilot is not required or the application simply requires a backpressure.
A four port vented version is available with a separate drain port where the vent to atmosphere is not acceptable due to the environment.