Fixed Competitive Price Small Hydraulic Unit - Monoblock Valves-GDV70 series – Guorui
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 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.
Product 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.
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.
By Gary from luzern - 2016.10.23 10:29