Direct Operated Pressure Reducing Valve Sandwich Plate Type ZDR10D-40B
- 1.Sandwich plate design
- 2.Porting pattern to DIN 24 340, form A, ISO 4401 and CETOP-RP 121H
- 3.Pressure reduction in ports A, B or p, 3 adjustment elements
- 4. Rotary knob, Hex. head screw with protective cap
- 5. Lockable rotary knob with scale, 4 pressure ratings,optional check valve
ChangJia is produced using the high-end materials.
Product Description
| BEIJING HUADE HYDRAULIC INDUSTRIAL GROUP CO.,LTD. | Direct operated pressure reducing valve sandwich plate,type ZDR 10 D...40B/ | RE 2670Q/12.2004 | ||
| Size 10 | up to 21 MPa | up to 50L/min | Replaces： RE26584/052001 | |
Functional, section
The pressure reducing valve type ZDR 10 D.. is a Way direct operated valve of sandwich plate design with a pressure relief function on the secondary side. 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 (4) as well as an optional check valve.
The secondary press ire is set by the pressure adjustment element (4).
Model W
Al rest, the valve is normally open, and fluid can flow unhindered from port A to port A1. The pressure in port A teat the same time 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 adjust the concussion spoon (3) and holds that pressure in port A constant.
The control pressure and pilot oil are taken from port A1 via control me(5)If the pressure In port A1 rises still further due to external forces, the control spool (2) is moved still further towards the compression spring (3).
This causes a flow oath to be opened at port A1 via control land (6) on the control spool (2) and housing (1) to tank (port TB).
Sufficient fluid then flows to tank to prevent any further rise in pressure.
The spring chamber (7) is always drained to tank external/ via port TA.
A pressure gauge connection (8) permits the secondary pressure at the valve to M monitored.
It is only possible to fit a check valve for free flow in ports A1 to A in version DA
Models W and PB，
In model DP, the pressure is reduced in port P1. The control pressure and the pilot oil is taken internally from port P1 .
In model "DB-, the pressure in port P1 is reduced, the pilot taken from port B.
Attention !
When the directional valve is in the switched position P to A. pressure in pod B must not exceed the set secondary pressure. Otherwise, pressure in port A wilbe reajced.
If used without a directional valve, TA and TB must be interconnected (e.g. in the cover plate).
characteristic curves(measured at V=41mm2/s and t=50℃)
Unit dimensions ZDR10DR (Dimensions in mm)
The performance and quality of the product is stable and reliable.
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