Since its establishment in 1979, Huade Hydraulic has now grown to a considerable scale of production. Pressure relief valve Z2DB 6 has a relatively lower price compared with other international renowned brand. The factory pays more attention to practicality and cost-effectiveness. In order to provide cheaper products, the factory make full of domestic resources. At the same time, in order to ensure the quality, it has introduced more than 750 advanced production equipment from all over the world. The factory has passed ISO9001, ISO14001 and OH SAS18001. Compared with other similar hydraulic valves, Huade® pressure relief valves are more advanced in technology and more durable in this industry. They are widely used in the military industry due to reliable quality and stable performance.
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Pressure fluid |
Mineral oil (for NBR seal),or phosphate ester (for FPM seal) |
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Pressure fluid - temperature range (℃) |
-30～+80 |
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Viscosity range (mm/s) |
10～800 |
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Degree of fluid contamination |
Maximum permissible degree of contamination of the |
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Operating pressure,max. (MPa) |
up to 31.5 |
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Pressure adjustable, max. setting (MPa) |
up to 5、 to 10、to 20、to 31.5 |
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Flow, max. (L/min) |
up to 60 |
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Weight |
Type ZDB 6 (Kg) |
approx. 1 |
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Type Z2DB 6 (Kg) |
approx. 1.2 |
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Features:
▶ Sandwich plate valve
▶ 4 pressure ranges
▶ 5 circuit options
▶ With one or two pressure relief cartridges
▶ 4 adjustment elements.
·Rotary knob
·Sleeve with hexagon and protective cap
·Lockable rotary knob with scale
·Lockable rotary knob
Application:
The main function of pressure relief valve Z2DB 6 is to limit the pressure within a hydraulic system.
Pressure relief valve types ZDB and Z2DB are pilot operated and are of sandwich plate design.
They basically consist of the housing (7), together with one or two pressure relief valve cartridges.
The system pressure is set by means of adjustment element (4).
At rest, the valve is closed. Pressure in port A acts on the spool (1). At the same time pressure passes through orifice(2) on to the spring loaded side of spool (1) and via orifice (3) to the pilot poppet (6). If the pressure in port A rises above the value set on spring (5), the pilot poppet (6) opens. Fluid can now flow from the spring loaded side of spool(1), orifice (3), and channel (8) into port T. The resulting pressure drop then moves spool (1), causing this to open connection A to T, while the pressure set at spring (5) is maintained.
Pilot oil from the two spring chambers return externally to tank via port T.
Symbol of Z2DB 6
1.The fluid must be filtered. Minimum filter fineness is 20 ㎛.
2.The tank must be sealing up and an air filter must be installed on air entrance.
3.Products without subplate when leaving factory, if 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.
Address
No. 27, Yangsha Road, Huilong Town, Qidong City, Jiangsu Province, China
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