Factory making High Precision Gear Pump - Monoblock Valves-GDV25 series – Guorui

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Factory making High Precision Gear Pump - 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:

Factory making High Precision Gear Pump -
 Monoblock Valves-GDV25 series – Guorui detail pictures


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We're going to dedicate ourselves to offering our esteemed shoppers with the most enthusiastically considerate solutions for Factory making High Precision Gear Pump - Monoblock Valves-GDV25 series – Guorui, The product will supply to all over the world, such as: Angola , Spain , Mexico , Our products are widely recognized and trusted by users and can meet continuously changing economic and social needs. We welcome new and old customers from all walks of life to contact us for future business relationships and mutual success!
  • 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 Annabelle from Cairo - 2015.07.27 12:26
    In our cooperated wholesalers, this company has the best quality and reasonable price, they are our first choice.
    5 Stars By Gwendolyn from Cologne - 2015.09.23 17:37

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