100% Original Factory Oil Hydraulic Pump - Monoblock Valves-GDV70 series – Guorui
100% Original Factory Oil Hydraulic Pump - Monoblock Valves-GDV70 series – Guorui Detail:
| Rated flow rate： | 70L/min |
| Maximum flow rate： | 80L/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℃ |
Operating Principle
GDV70 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 pressure drop. When one 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 to parallel passage, then, through the spool opening to work port “A” or “B”.
As shown in above picture, when first spool is in neutral, flow from pump passes through load check valve and center the parallel passage to supply flow to both spool. Due to second spool is moved to “2” position, the flow from parallel passage flows to “A2” through the spool opening. The flow from “B2” flows to return passage through the spool’s another opening. Neutral passage is blocked by the second spool.
Product detail pictures:
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The very rich projects management experiences and one to one service model make the high importance of business communication and our easy understanding of your expectations for 100% Original Factory Oil Hydraulic Pump - Monoblock Valves-GDV70 series – Guorui, The product will supply to all over the world, such as: Romania, Philippines, Kazakhstan, With the highest standards of product quality and service, our products have been exported to more than 25 countries like the USA, CANADA, GERMANY, FRANCE, UAE, Malaysia and so on.We are very pleased to serve customers from all over the world!
By Gail from Slovenia - 2015.05.13 17:00
The company can keep up with the changes in this industry market, product updates fast and the price is cheap, this is our second cooperation, it's good.
By Agnes from Serbia - 2016.01.28 18:53
