China Gold Supplier for Engine Powered Hydraulic Power Pack - Monoblock Valves-GDV70 series – Guorui

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So as to provide you with ease and enlarge our business, we even have inspectors in QC Crew and guarantee you our best company and solution for Sectional Hydraulic Control Valve , Bi-Directional Hydraulic Gear Motor , 12v/24v Mini Hydraulic Power Pack Unit , We sincerely welcome friends from all over the world to cooperate with us on the basis of long-term mutual benefits.
China Gold Supplier for Engine Powered 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.


Product detail pictures:

China Gold Supplier for Engine Powered Hydraulic Power Pack -
  Monoblock Valves-GDV70 series – Guorui detail pictures


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We not only will try our best to offer excellent services to every customer, but also are ready to receive any suggestion offered by our customers for China Gold Supplier for Engine Powered Hydraulic Power Pack - Monoblock Valves-GDV70 series – Guorui, The product will supply to all over the world, such as: Swaziland , Afghanistan , Swiss , We confirm to public, cooperation, win-win situation as our principle, adhere to the philosophy of make a living by quality, keep developing by honesty , sincerely hope to build up a good relationship with more and more customers and friends, to achieve a win-win situation and common prosperity.
  • Perfect services, quality products and competitive prices, we have work many times, every time is delighted, wish continue to maintain!
    5 Stars By Amy from London - 2015.06.28 19:27
    This is a honest and trustworthy company, technology and equipment are very advanced and the prodduct is very adequate, there is no worry in the suppliment.
    5 Stars By Agatha from Iraq - 2016.08.18 18:38

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