Huade's open center multi-way valve is a special hydraulic valve. Its characteristic is that when the valve core is in the middle position, the hydraulic oil output by the hydraulic pump can flow back to the oil tank through the multi-way valve. The open center multi-way valve generally adopts a six-way multi-way valve structure. The main oil circuit of the hydraulic pump outlet is divided into two circuits: a parallel oil circuit (parallel channel) and a bypass oil circuit (open center channel). The speed regulation of the open center multi-way valve adopts a combination of bypass throttling and oil inlet throttling. The speed regulation effect is achieved by controlling the opening amount of the oil cylinder and the oil tank through the valve core throttling.
| Structural features | Overall structure |
| Installation and Fixing | 2 × M8 bolts |
| Pressure connection | Open center multi-way valve |
| Ambient temperature | -40 to +60 ℃ |
| Oil medium | Mineral hydraulic oil |
| Viscosity Range | Permitted 12~800mm2/s |
| Recommended range 20~100mm2/s | |
| Oil temperature | -15 to 80℃ |
| Filter level | Oil solid contamination level NAS1638 level 10 |
| Maximum working pressure | P=250 bar, T=50bar, A,B=300bar |
| Rated flow | 40L/min |
| Valve core travel | ±6mm |
| Spool driving force | Less than 200N |
Features:
▶Adopt an integral design to control the flow direction of the fluid in the starting, working and stopping states
▶Pressure to 250bar
▶Flow to 40L/min
▶6-unit integral structure
▶Open center type
Application:
Open-center multi-way valve is mainly used in coal drilling rigs, cranes and drilling rigs.
Address
No. 27, Yangsha Road, Huilong Town, Qidong City, Jiangsu Province, China
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