Pressure Sequence Valve DZ 5 DP are used to direct oil to a second system at a set pressure.
Due to the introduction of Rexroth's advanced technology, Huade® hydraulic valves are compatible with Rexroth in performance and quality. The price is more reasonable. The factory has advanced production equipment and strict testing systems from all over the world to ensure the superior performance of the products.
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Technical Data |
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Inlet pressure,port P, B (X） (MPa) |
up to 210; without non-return valve up to 31.5 |
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Outlet pressure,port A (MPa) |
to 31.5 |
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Back pressure,port T (MPa) |
to 6.0 |
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Max.permissible flow (L/min) |
to 30 |
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Fluids |
Mineral oil (for NBR seal),or phosphate ester (for FPM seal) |
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Viscosity range(mm ²/s) |
10~800 |
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Fluid temperature range(℃) |
-30 up to +80 |
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Fluid cleanliness (um) |
Fluid cleanliness Maximum permissible degree of contamination of the fluid to NAS 1638 Class 9 |
Features:
▶ For subplate mounting
▶ Front flange mounting
▶ 5 pressure ranges
▶ 4 different setting elements
. Rotary knob
. Sleeve with hexagon and protective cap
. Lockable rotary knob with scale
. Rotary knob with scale
▶ Optional non return valve
▶ Mounting pattern to DIN 24 340, form C for subplates
Application:
This DZ 5 DP pressure sequence valve can be widely used in hydraulic systems of lifting and transportation machinery, construction machinery, industrial vehicles, machine tools, ships, metallurgy and other equipment.
1. Section and symbol of Pressure Sequence Valve DZ 5 DP
Valves type DZ 5 DP are direct operated sequence valves. Valves of this type consist basically of the housing (1), control spool (2), springs (3) and pressure setting element (4), and additionally non-return valve (5) if required.
The pressure at which the valve passes oil is set at the pressure setting element (4).The springs (3) hold the control spool(2) in the starting position, and the valve remains closed. The pressure in port P passes via drilling (6) and jet (7) on to the spool operating area at the opposite end to the control springs (3).
When pressure in port P reaches the set value, the spool moves against the spring to connect port P to port A.
The signal for this passes internally via drilling (6) from port P.
Oil now passes to the system connected to port A, but the pressure in port P does not fall.
The pilot oil may also be fed externally via port B(X).
Depending on the application of the valve, the pilot oil return may be externally via port T(Y) or internally.
In order to allow free return flow of the oil from port A to port P, non-return valve(5) may be included if required.
structure of DZ5DP-3-10B
Symbols of DZ 5 DP-10B
Address
No. 27, Yangsha Road, Huilong Town, Nantong City, Jiangsu Province, China
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