SUN Hydraulics date codes
SUN Hydraulics uses date codes on their cartridge valves to track the exact manufacturing date. In the attached document, the date key is explained. SUN Hydraulics date codes from 1986…

We’re excited to announce the launch of two excellent additions to the Sun Common (SC) cavity cartridge family (industry-standard cavity): the DGTA and DGUA.
DGTA and DGUA are 2-way, 2-position solenoid-operated directional valves with poppet-style construction, rated for 350 bar (5000 psi). The DGTA fits the SC-08-02 cavity and offers a flow capacity of 46 l/min (12 gpm), while the DGUA fits the SC-10-02 cavity with a flow capacity of 60 l/min (16 gpm).