Rapid Delivery for Proportional Valve Controller - Monoblock Valves-GDV160 – Guorui
Rapid Delivery for Proportional Valve Controller - Monoblock Valves-GDV160 – Guorui Detail:
| Rated flow rate： | 160L/min | |
| Maximum flow rate： | 170L/min | |
| Maximum pressure at P port： | 310bar | |
| Maximum pressure at A/B port： | 310bar | |
| Maximum pressure at T port： | 25bar | |
| Internal leakage (at 70 bar):A/B toT ： | 30-35CC/min | |
| Temperature range of the hydraulic oil： | ||
| With NBR (BUNA-N) seals | -20℃-80℃ | |
| With FPM (VITON) seals | -20℃-100℃ | |
| Spool stroke (1/2 position)： | +7/-7 mm | |
| With floating function (1/2 and F position)： | +7/-7 -9 mm | |
| Recommend hydraulic oil viscosity range： | 15-75mm²/s | |
| Recommend temperature range： | -40℃-60℃ | |
| Solenoid can be either 12 VDC or 24 VDC, corresponding current is 0-1.5 or 0-0.75 Amp. | ||
Operating Principle
GDV160 series mono-block valve is an open centered 3 position 4 way valve. When spool is in its neutral position, the flow from pump passes through the neutral passage to tank., with very low drop. When on of the spool is moved to “1” or “2” position, the neutral passage is blocked. The flow from pump can only pass through load check valve to parallel passage, then, through spool opening to work port “A” or “B”.
As shown in above picture, the first spool is in neutral position, flow from pump flows to parallel passage through the load check valve to supply flow to two spool. Because the second spool is pulled out 7mm, the second spool opening between parallel passage to A2 port allows flow to enter the A2 port. B2 port connected to return passage. Neutral passage is blocked by second spool.
Product detail pictures:
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By Hazel from Czech republic - 2015.10.09 19:07
A good manufacturers, we have cooperated twice, good quality and good service attitude.
By Esther from Lebanon - 2016.01.28 19:59
