Hot New Products Vertical Mini Hydraulic Power Pack - Monoblock Valves-GDV70 series – Guorui

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Hot New Products Vertical Mini Hydraulic Power Pack - 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 New Products Vertical Mini Hydraulic Power Pack -  Monoblock Valves-GDV70 series – Guorui detail pictures


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Using a full scientific good quality administration system, very good quality and superior faith, we win good standing and occupied this discipline for Hot New Products Vertical Mini Hydraulic Power Pack - Monoblock Valves-GDV70 series – Guorui, The product will supply to all over the world, such as: Rwanda, Bahrain, Seattle, Our aim is to help customers to make more profits and realize their goals. Through a lot of hard work, we establish a long-term business relationship with so many customers all around the world, and achieve win-win success. We will continue to do our best effort to service and satisfy you! Sincerely welcome you to join us!
  • In China, we have many partners, this company is the most satisfying to us, reliable quality and good credit, it is worth appreciation.
    5 Stars By Anna from Ghana - 2016.12.19 11:10
    The sales manager is very patient, we communicated about three days before we decided to cooperate, finally, we are very satisfied with this cooperation!
    5 Stars By Jill from Thailand - 2016.09.28 18:29

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