Pressure Reducing Valve ZDR6D-30B

Functional description, section

Pressure reducing valves type ZDR 6 D.. are 3-way direct operated pressure reducing valves of sandwich plate design with a pressure refile function on the secondary side. It is used to reduce the system pressure.

The pressure reducing valve basically consists of the housing (1), the control spool (2), a compression spring (3) and the adjustment element (4) as well as with an optional check valves.

The secondary pressure is set by the pressure adjustment element (4). Model "DA"

At rest, the valve ts notionally open, and fluid can flow unhindered from port A to port A1. The pressure In port A1 is at the same lime via the control line (5) present at the spool area opposite to the compression spring (3).

When the pressure in port A1 exceeds the pressure level set at the compression spring (3) the control spool (2) moves into the control position against the compression spring (3) and hoicfc the set pressure in port A1 constant.

The control pressure and plot oil are taken from port A1 via control line (5).

If the pressure in port A1 rises st! further due to external forces, the control

Characteristic curves(measured at V=41mm2/s and t=50℃)

Notice

1.The fluid must be filtered. Minimum filter fineness is 20 gm.

2.The tank must be sealing up and an air filter must be installed on air entrance.

3.Products without subplate when leaving factory, rf need them, please ordering specially.

4.Valve fixing screws must be high intensity level (class 10.9). Please select and use,them according to the parameter listed in the sample book.

5. Roughness of surface linked with the valve is required surface roughness is 0.8.

6. Surface finish of mating piece is required to 0.01/100mm.