Shijiazhuang Laiye Import& Export Trading Co., Ltd. is one of the leading manufacturers and suppliers of g1weh hydraulic control valve in China, also supports customized service. If you're going to wholesale high quality g1weh hydraulic control valve made in China, welcome to get pricelist from our factory.
Custom properties
Two things are happening here. One: it's explosion-proof. Two: it's pilot-operated.
Explosion-proof means you can use it in hazardous areas - petrochemical plants, mines, offshore platforms - without worrying about the coil sparking and igniting the atmosphere.
Pilot-operated means it handles high flow without a huge solenoid. A small pilot valve controls the main spool. The main spool handles the flow. Up to 1100 L/min.
The G1WEH Hydraulic Control Valve combines two things: pilot-operated high-flow control and explosion protection. Put those together and you get a valve that controls serious flow safely in dangerous environments.
Four sizes: NG10, NG16, NG25, NG32. Max pressure 31.5 MPa at P/A/B, 16 MPa at T. DC12V/24V or AC110/220V. Spool types G1WEH / J / H / G / D.
Transaction
- Minimum order quantity: 10 pieces
- Payment method: T/T, Paypal, Western Union
- Supply Ability: Annual output of 1,000,000
- Delivery time: 10-15 days
- Conventional packing: Wooden case
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PRODUCT PARAMETERS |
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Specification |
6 |
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Max working pressure Mpa |
P/A/B ( Oil ports ) |
31.5 |
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T(Oil ports) |
16 |
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Max.Flow (L/min) |
80 |
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Working Voltage |
DC |
12/24 |
Product description
Technical
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Fixing position |
Optional |
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Environment temperature range℃ |
-30 to+50(NBR seal) |
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-20 to+50(FKM seal) |
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Weight |
Single solenoid kg |
2.6 |
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Double solenoids kg |
4.3 |
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Max.operating pressure |
Port P,A,B bar |
350 |
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Port T bar |
210 |
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when the operating pressure exceeds the permission value, spool symbol A and B must make the port T for draining |
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Max.flow-rate L/min |
80 |
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Flow cross section (switching neutral position) |
VersionQ mm² |
About 6% of nominal area |
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VersionW mm² |
About 3% of nominal area |
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Fluid |
Mineral oil suitable for NBR and FKM seal |
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Phosphate ester for FKM seal |
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Fluid temperature range ℃ |
-30 to+80(NBR seal) |
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-20 to+80(FKM seal) |
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Viscosity range mm²/s |
2.8 to 500 |
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Degree of contamination |
Maximum permissible degree of fluid contamination: Class 9.NAS 1638 or 20/18/15,ISO4406 |
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Electrical date
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Type of voltage |
DC |
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Available voltage V |
12, 24, 36, 110 |
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Permissible voltage(deviation) % |
-15 to+10 |
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Input power W |
30 |
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Operation mode of solenoid |
Continuous working |
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Switched time Accord with ISO 6403 |
ON ms |
25 to 45 |
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OFF ms |
10 to 25 |
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Switched frequency times/h |
To 15000 |
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Maximum coils temperature ℃ |
+150 |
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Caution:with electrical connections the protective conductor(PE±)must be connected according to the relevant regulations.
How pilot operation works
Direct-acting valves are simple. The solenoid pushes the spool. Done.
But there's a limit. Push a big spool against high flow forces, and you need a big solenoid. Big solenoid means more power, more heat, more space.
Pilot operation solves that. A small solenoid shifts a small pilot spool. The pilot spool directs control oil to one end of the main spool. The pressure builds. The main spool moves. High flow opens.
The solenoid stays small. The main spool handles the flow. You get high capacity without a massive coil.
When the solenoid de-energizes, the spring returns the pilot spool. The main spool returns to neutral.
When you need pilot operation
Direct-acting works fine for smaller flows. But when you need high flow, direct-acting becomes impractical. The solenoid would need to be huge.
That's where pilot operation comes in. A small solenoid controls a pilot stage. The pilot stage uses hydraulic pressure to move the main spool. The main spool handles the high flow.
When to choose G1WEH:
Your system flow exceeds 80 L/min
You need high flow with a compact solenoid
Your application requires explosion protection
You're working in offshore, mining, or petrochemical environments
When G1WE6 is enough:
Your system flow is 80 L/min or less
You don't need pilot operation
You want a simpler, lower-cost solution
Installation - what matters
Mounting. Subplate mounting. Confirm your manifold matches the porting pattern.
Pilot oil supply. Internal or external. Internal pilot takes oil from port P. External pilot uses port X. Check your system pressure - if it fluctuates too much, use external pilot.
Pilot oil drain. Internal or external. Internal drain returns pilot oil to tank through the valve. External drain uses port Y. Use external drain if tank port backpressure is high.
Electrical connection. Certified flameproof cable glands. The gland is part of the certification - not just a seal.
Flame path. Don't modify the flame path surfaces. Don't use the valve if the gaps are damaged.
Coil replacement. Certified replacement coils only. A standard coil from a non-explosion-proof valve will not maintain the certification.
Where it belongs
The G1WEH Hydraulic Control Valve is used in hydraulic systems located in hazardous areas requiring high flow:
Offshore platforms - oil and gas environments, high-flow systems
Mining equipment - methane and coal dust hazards
Petrochemical plants - flammable gas and vapor atmospheres
Chemical processing - flammable solvents
Large mobile machinery - where explosion protection is required
About the company
Shijiazhuang Laiye Import & Export Trading Co., Ltd., part of Hebei Onederful® Hydraulic Technology Co., Ltd., has been making hydraulic components since 1988 - over 35 years.
We're a factory, not a trading company. Around 200 employees. Full in-house production: casting, machining, assembly, testing, phosphating.
Products go to Russia, Europe, the Middle East, South America, and Asia. ISO 9001 certified. Every valve is tested individually, with data linked to its serial number.
Transportation
Factory environment
Exhibition
FAQ
Q: What type of valve is the G1WE series, and what are its nominal size specifications?
A: The G1WE series is a direct-acting solenoid directional valve; it features a direct-drive design that enables rapid switching response without the need for a pilot control stage and comes standard with a manual override function.
Q: What kind of equipment is the G1WE series suitable for?
A: Automated production lines, compact construction machinery, agricultural equipment, and any hydraulic system requiring a compact layout, rapid response, and a cost-effective control solution.
Q: Why does the G1WE series offer fast response?
A: It employs a direct-acting solenoid drive structure; eliminating the need for a pilot control stage, the solenoid directly actuates the spool for switching, resulting in rapid response.
Q: What is the purpose of the manual override function?
A: In the event of a power outage or solenoid failure, a tool can be used to press the emergency button and shift the valve spool; this facilitates equipment commissioning and allows for temporary operation during emergencies. The manual override function comes as a standard feature.
Q: How should a stuck spool in the G1WE series valve be handled?
A: First, check the cleanliness of the hydraulic fluid; if contamination is confirmed, disassemble the unit to clean the spool and valve bore, and replace the oil and filter element. If the spool surface shows scratches or wear, the spool must be replaced. Maintaining fluid cleanliness is key to preventing spool sticking.
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