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Ningbo Power Hydraulic Motor Co., Ltd.
Ningbo Power Hydraulic Motor Co., Ltd.  

Gold Index: 20032

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3-way direct operated pressure reducing valves of sandwich plate 

Price: 10.0~100.0 USD 
Place of Origin: Zhejiang, China (Mainland) 
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Product Detail

Model No.: ZDR6DP...30B/
Packing: carton
Power: Solenoid
Pressure: High Pressure
Material: Stainless Steel
Media: Oil
Weight: 1.2kg
Secondary pressure: 21Mpa
Production Capacity: 20000pc/month
Delivery Date: 2 weeks
Standard or Nonstandard: Standard
Structure: Pressure Reducing
Temperature of Media: High Temperature
Brand Name: Power
Back pressure: 6Mpa

-Sandwich plate valve
- 4 pressure ranges
- 5 circuit options
-With one or two pressure relief cartridges
- 4 adjustment elements

Features of sandwich plate pressure reducing valve direct operated :
-Sandwich plate design
-4 pressure ratings
-3 adjustment elements:
. Rotary knob
. Sleeve with hexagon and protective cap
. Lockable rotary knob with scale
- Pressure reduction in ports A, P, B
-Check valve, optional

Section of sandwich plate pressure reducing valve direct operated



Functional description of 3-way direct operated pressure reducing valves of sandwich plate
Pressure reducing valves type ZDR 6 D are 3-way direct operated pressure reducing valves of sandwich plate design with a pressure relief 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 valve.
The secondary pressure is set by the pressure adjustment element (4).
Model " A"
At rest, the valve is normally open, and fluid can flow unhindered from port A to port A1. The pressure in port A1 is at 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 against the compression spring (3) and holds the set pressure in port A1 constant. The control pressure and pilot oil are taken from port A1 via control line (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. This causes a flow path to be opened at port A through line (6) on the control spool (2) to tank. Sufficient fluid then flows to tank to prevent any further rise in pressure. The spring chamber (7) is always drained to tank externally via drilling (6) to port T (Y).
A pressure gauge connection (8) permits the secondary pressure at the valve to be monitored. It is only possible to fit a check valve for free flow in ports A1 to A in version "DA".
Models "DP" and "DB"
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, and the pilot oil taken from port B.
Attention!
In model DB, it must be ensured, that the pressure in port B is not higher than the set pressure when the directional valve is in position P to A. Otherwise, pressure in port A will be reduced.


Symbol of sandwich plate pressure reducing valve direct operated
Pressure reducing valve direct operated of sandwich plate


Ordering codes of 3-way direct operated pressure reducing valves of sandwich plate:
Pressure reducing valve direct operated of sandwich plate


Technical data of sandwich plate pressure reducing valve direct operated
Weight                (kg)
Approx.1.2
Pressure Fluid
Mineral oil or Phospate ester
Temperature range      ℃
-30~+80
Viscosity range       mm²/s
10~800
Max. operating pressure(inlet)        Mpa
31.5
Secondary pressure               Mpa
To 21
Back pressure                   Mpa
To 6
Max. flow            L/min
30


Unit dimensions (dimensions in mm)
Pressure reducing valve direct operated of sandwich plate

Mr. shawn
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Tel: 86-574-87193975
Fax: 86-574-23671688
Mobile: 86- 181 5744 9077
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Company Info

Ningbo Power Hydraulic Motor Co., Ltd. [China (Mainland)]


Business Type:Manufacturer, Trading Company, Agent, Distributor/Wholesaler, Service
City: Ningbo
Province/State: Zhejiang
Country/Region: China (Mainland)

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