Hot sale Hydraulic Power Pack Units - Monoblock Valves-GDV70 series – Guorui

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"Sincerity, Innovation, Rigorousness, and Efficiency" may be the persistent conception of our organization to the long-term to build together with shoppers for mutual reciprocity and mutual advantage for Hydraulic Power Unit/Part , Mobile Power Pack , Yuken Hydraulic Valve , We have now ISO 9001 Certification and qualified this item .in excess of 16 years experiences in manufacturing and designing, so our items featured with best quality and competitive selling price. Welcome cooperation with us!
Hot sale Hydraulic Power Pack Units - 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
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”.GDV70-1
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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Hot sale Hydraulic Power Pack Units -
  Monoblock Valves-GDV70 series – Guorui detail pictures


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Just about every member from our large efficiency income crew values customers' wants and enterprise communication for Hot sale Hydraulic Power Pack Units - Monoblock Valves-GDV70 series – Guorui, The product will supply to all over the world, such as: Israel , Cologne , Qatar , Our company offers the full range from pre-sales to after-sales service, from product development to audit the use of maintenance, based on strong technical strength, superior product performance, reasonable prices and perfect service, we'll continue to develop, to deliver the high-quality items and services, and promote lasting cooperation with our customers, common development and create a better future.
  • High production efficiency and good product quality, fast delivery and completed after-sale protection, a right choice, a best choice.
    5 Stars By Sally from Sao Paulo - 2015.11.02 11:11
    Company director has very rich management experience and strict attitude, sales staff are warm and cheerful, technical staff are professional and responsible,so we have no worry about product,a nice manufacturer.
    5 Stars By Sarah from Washington - 2016.11.12 12:31

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