Manufacturer for Monoblock Hydraulic Valve - Monoblock Valves-GDV70 series – Guorui
Manufacturer for Monoblock Hydraulic Valve - 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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We will devote ourselves to giving our esteemed buyers using the most enthusiastically thoughtful services for Manufacturer for Monoblock Hydraulic Valve - Monoblock Valves-GDV70 series – Guorui, The product will supply to all over the world, such as: Indonesia, Sierra Leone, Oman, Our tenet is "integrity first, quality best". Now we have confidence in providing you with excellent service and ideal merchandise. We sincerely hope we can establish win-win business cooperation with you in the future!
By Deborah from Peru - 2015.07.26 16:51
The customer service staff is very patient and has a positive and progressive attitude to our interest, so that we can have a comprehensive understanding of the product and finally we reached an agreement, thanks!
By Dolores from UAE - 2016.01.28 19:59
