Hot-selling Hydraulic Valve Coil - Monoblock Valves-GDV25 series – Guorui
Hot-selling Hydraulic Valve Coil - Monoblock Valves-GDV25 series – Guorui Detail:
Rated flow rate | 25L/min |
Maximum flow rate | 30L/min |
Maximum pressure at P port | 250bar |
Maximum pressure at A/B port | 250bar |
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) | +5.5/-5.5 mm |
With floating function (1/2 and F position) | +5.5/-5.5 -8 mm |
Recommend hydraulic oil viscosity range | 15-75mm²/s |
Recommend temperature range | -40℃-60℃ |
Order Code Example
GDV25 |
-3 |
-P1 |
/210 |
-T1 |
-D1 |
-O1 |
-FG1 |
KQ1 |
-DC/00 |
Model |
3 spool |
Inlet port on top |
Inlet relief setting(210bar) |
Return port on top |
Power beyond |
First spool |
Spool function |
Standard manually control |
-O2 |
-FG2 |
-KQ5 |
-DC/24 |
Second spool |
Spool function |
Electrical controlled with detent |
24VDC |
-O3 |
-FG2 |
-KQ2 |
-DC/00 |
Third |
Spool function |
Hydraulic remote controlled |
Not electrical |
GDV25 series mono-block valve is an open center,3 position 4 way valve. Flow from pump passes through inlet port and enters to inlet passage.The inlet passage connects two passage:one is through the load check into the parallel passage to supply flow to metering spool;Another is to neutral passage .When spool is in neutral position,spool metering with parallel passage is blocked.The oil from pump has to pass through neutral passage.When all spools are in neutral position ,parallel passage for each spool is blocked,and neutral passage is wide open.Therefore,oil from pump is directly passing through the neutral passage to return passage to tank.It produces small pressure drop from “P” to “T”.When one of the spools is moved to “1” or “2” position,the spool blocked the neutral passage.The flow from pump has to pass load check to parallel passage,then through valve opening between parallel passage and spool to work port “A” or “B”. For multi-spool mono-block valve, when one of its spools is in “1” or “2” position,its downstream of the neutral passage has no flow. The operator can operate more than one spools at a time, but the speed of the controlled device will be dependent on the magnitude of the load.
Product detail pictures:
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To be a result of ours specialty and repair consciousness, our corporation has won an excellent reputation amongst customers all around the entire world for Hot-selling Hydraulic Valve Coil - Monoblock Valves-GDV25 series – Guorui, The product will supply to all over the world, such as: Nepal, Norwegian, Florida, So far our merchandise have been exported to east Europe, the Middle East, Southeast, Africa and South America etc. We have now 13years experienced sales and purchase in Isuzu parts at home and abroad and the ownership of the modernized electronic Isuzu parts checking systems. We honor our core principal of Honesty in business, priority in service and will do our best to provide our customers with high quality items and excellent service.
By Queena from Kuwait - 2016.03.28 12:22
Adhering to the business principle of mutual benefits, we have a happy and successful transaction, we think we will be the best business partner.
By Aurora from US - 2015.12.28 15:18