Fixed Competitive Price Small Hydraulic Unit - Monoblock Valves-GDV70 series – Guorui

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"Control the standard by the details, show the power by quality". Our organization has strived to establish a highly efficient and stable employees team and explored an effective high-quality command method for Monoblock Control Valve On Tractor, Power Units, Fork Lift Hydraulic Power Unit, Our company maintains safe business mixed by truth and honesty to keep long-term relationships with our customers.
Fixed Competitive Price Small Hydraulic Unit - 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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Fixed Competitive Price Small Hydraulic Unit -  Monoblock Valves-GDV70 series – Guorui detail pictures


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We retain bettering and perfecting our merchandise and service. At the same time, we do the job actively to do research and improvement for Fixed Competitive Price Small Hydraulic Unit - Monoblock Valves-GDV70 series – Guorui, The product will supply to all over the world, such as: Germany, Jersey, Philadelphia, We pay high attention to customer service, and cherish every customer. We have maintained a strong reputation in the industry for many years. We are honest and work on building a long-term relationship with our customers.
  • The after-sale warranty service is timely and thoughtful, encounter problems can be resolved very quickly, we feel reliable and secure.
    5 Stars By Salome from Lesotho - 2016.04.18 16:45
    The factory workers have a good team spirit, so we received high quality products fast, in addition, the price is also appropriate, this is a very good and reliable Chinese manufacturers.
    5 Stars By Gary from luzern - 2016.10.23 10:29

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