Manufacturer for Monoblock Hydraulic Valve - Monoblock Valves-GDV70 series – Guorui

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We have advanced equipment. Our products are exported to the USA, the UK and so on, enjoying a good reputation among customers for Tipper Tralier Dc Motor Power Unit, Hydraulic Press Machine, Single Action 12v/24vdc Hydraulic Power Pack, To achieve reciprocal advantages, our company is widely boosting our tactics of globalization in terms of communication with overseas customers, fast delivery, the best quality and long-term cooperation.

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.

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"Based on domestic market and expand abroad business" is our progress strategy for Manufacturer for Monoblock Hydraulic Valve - Monoblock Valves-GDV70 series – Guorui, The product will supply to all over the world, such as: Netherlands, Zambia, Saudi Arabia, To keep the leading position in our industry, we never stop challenging the limitation in all aspects to create the ideal products. In his way, We can enrich our life style and promote a better living environment for the global community.

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