DH6/10

Other general purpose valves
SUN cartridge valve
Features of SUN cartridge valve
SUN cartridge valves adopt two piece structure called “floating style”.
The body which has valve mounting threads and the sleeve which contains internal operating part are
coupled with certain freedom, and the sleeve is, keeping slight gap in the axis direction between the
locating shoulder and bottom shoulder, mounted in the cartridge hole (See the folowing figure). Hence,
the tightening distortion due to cartridge mounting does not affect the internal operation part, which
realises the stable operation.
It smoothly operates at high pressure such as maximum working pressure 34.3MPa, and leakage
amount is very slight.
Because four serieses each of which has different maximum flow rate are prepared for most of the
cartridges, the best suited valve for your system will be found.
(1) This part guides the cartridge hole to maintain the concentricity of cartridge
valve and cartridge hole.
(2) Having a slight gap between the cartridge hole and tip of the cartridge valve,
the body which has cartridge valve mounting threads and the sleeve which
contains internal operating part are coupled with certain freedom. (Floating
style)
(3) The floating style structure enables to tighten at high torque.
As the result, the reliability has significantly increased against loosening or oil
leakage.
(4) This face called locating shoulder supports the axial force due to tightening,
to prevent distortion on the sleeve portion.
(5) Locating the thread portion at immediate proximity of the sleeve keeps the
eccentricity of sleeve to minimum.
(6) This face called bottom shoulder receives all the load that occurs during
operation. (The load is not shared to the wire ring.)
(7) Cartridge valves with various functions can be applied to the same cartridge
hole, which provides flexibility in designing.
(3)
(1)
(5)
Thread
(2)
Sleeve
Port
Body
(4)
Locating shoulder
Wire link port
Port
(6)
Bottom shoulder
* As for the details, please see the catalogue of SUN cartridge valves.