3-way direct operated pressure reducing valves of sandwich plate from China manufacturer

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:

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