Fast delivery Hydraulic Power Packs - Monoblock Valves-GDV70 series – Guorui
Fast delivery Hydraulic Power Packs - 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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Innovation, excellent and reliability are the core values of our company. These principles today much more than ever form the basis of our success as an internationally active mid-size business for Fast delivery Hydraulic Power Packs - Monoblock Valves-GDV70 series – Guorui, The product will supply to all over the world, such as: Austria, Guatemala, Palestine, Our products are widely recognized and trusted by users and can meet continuously changing economic and social needs. We welcome new and old customers from all walks of life to contact us for future business relationships and mutual success!
By Elva from Slovakia - 2015.02.08 16:45
We have worked with many companies, but this time is the best，detailed explanation, timely delivery and quality qualified, nice!
By Salome from San Francisco - 2015.02.04 14:13
