As a leading manufacturer in China's hydraulic industry, Huade Hydraulic has had two long-term cooperation experiences with Rexroth. Huade® directional control valve type WH is more advanced in technology and more durable than the similar products in this line. Huade operates more than 750 pieces advanced production equipment imported from all over the world to ensure the high quality of hydraulic products. It is more advanced in technology and more durable than the similar products in this line. The factory comes up to the international standards,namely, ISO9001, ISO14001 and OH SAS18001. The series of directional valves produced by Huade Hydraulic are widely used in marine hydraulic system. Huade owns a huge customer group in the marine industry.
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Size |
6 |
10 |
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Max.operating pressure |
Ports A, B,P(MPa) |
to 31.5 |
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Port T (MPa) |
to 16 |
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With symbols A and B port T must be used as a leakage port |
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Flow max (L/min) |
up to 60 |
up to 120 |
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Operating to flow |
Symbol Q6%of nominal cross-sectional area |
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Symbol W, 3% of nominal cross-sectional area |
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Fluid |
Mineral oil or phosphate ester |
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Pressure fluid temperature range （℃） |
-20～+80 |
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Viscosity range (mm2/s) |
2.8~500 |
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Weight(kg) |
1 operating cylinder |
approx.2 |
approx.3.5 |
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2 operating cylinder |
approx.2.2 |
approx.4.5 |
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Plot pressure(MPa) |
min |
0.6 to 1> tank pressure |
0.5 |
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max |
20 |
6 |
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Features:
▶ Direct operated directional spool valve
▶ Two position valve with stroke limit optional
▶ Subplate mounting
▶ Mounting pattern to Din 24 340 form A, ISO 4401 and CETOP - RP 121H
Application:
WH valves are hydraulic operated directional spool valves.They are used for the control of stop, start and direction of a flow
The directional valves mainly consist of housing (1), one or two operating elements (2) (hydraulically, pneumatically operating cylinder), the control spool (3), as well as one or two return springs (4).
At rest the control spool (3) is kept in the centre or starting position by the return springs (3) (except impulse valve).
The control spool (3) is pushed into the required switching position by the operating elements.
With detent, type ..OF/.
Hydraulically or pneumatically operated directional valves are also available as 2-position valves with detent (5). When the operating elements with detent are used every switching position may be locked.
Without return spring, without detent, type..O/.
When using operating elements without return spring and without detent, there is no defined switching position at rest.
Structure diagram
Cartridge throttle
The use of a cartridge throttle is then necessary when during the switching procedures in the given operating conditions flows occur which exceed the performance limits of the valve.
It is plugged into the P-channel of the directional valve.
Address
No. 27, Yangsha Road, Huilong Town, Nantong City, Jiangsu Province, China
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