Shijiazhuang Laiye Import& Export Trading Co., Ltd. is one of the leading manufacturers and suppliers of wemm solenoid directional valve with emergency handle in China, also supports customized service. If you're going to wholesale high quality wemm solenoid directional valve with emergency handle made in China, welcome to get pricelist from our factory.
What This Valve Is
The WEMM Solenoid Directional Valve with Emergency Handle is a solenoid-operated directional valve with a manual backup handle under the Onederful brand.
Under normal operation, an electrical signal shifts the spool. When power is lost or the solenoid fails, the handle lets the operator shift it by hand.
Two sizes: 6 and 10. Maximum working pressure on the P/A/B ports is 31.5 MPa. Maximum flow values are 80 and 120 L/min.
Why the Handle Is There
Most solenoid valves stop working when the power goes out. On some machines, that is not acceptable.
A cylinder may be holding a load in mid-air. A clamp may be gripping a workpiece. A boom may be blocking an access panel. If the valve cannot shift, the machine cannot be brought to a safe state without manual intervention.
The WEMM gives that manual intervention. The handle is not a replacement for the solenoid. It is a backup for the moments when the solenoid cannot do its job.
Product Introduction
The WEMM Solenoid Directional Valve with Emergency Handle can be looked at from several angles, depending on what matters in your application.
Control.
Two inputs. Electrical signal for normal operation. Manual handle for backup. Day to day, the solenoid does the work. The handle sits there until it is needed.
Sizes.
Two: 6 and 10. The size fixes both the mounting pattern and the flow range.
Flow.
Maximum flow values are 80 and 120 L/min. Pick the one that matches your pump output. Too small, and the valve becomes a bottleneck. Too large, and you pay for size and manifold space you will never use.
Pressure.
31.5 MPa on the P/A/B ports. The T port rating is 16 or 21 MPa, depending on size. Check the T port rating for your selected size before ordering.
Power.
DC 12V / 24V or AC 110V / 220V. Confirm the coil voltage before ordering. The valve must match the power supply in the system.
Spool behavior.
Four types: C, D, J, E. Each one gives a different flow path in the neutral position. The right choice depends on what the circuit should do when the solenoid is de-energized or the handle is released. If the circuit diagram is not clear on this, send it to us and we will confirm.
Ordering.
Size, voltage, spool type, brand marking. OEM service is available with your drawing and specifications.
Specifications
| Parameter | Value |
|---|---|
| Series | WEMM |
| Valve type | Solenoid directional valve with emergency handle |
| Sizes | 6 / 10 |
| Max working pressure P/A/B | 31.5 MPa |
| Max working pressure T | 16 / 21 MPa |
| Max flow | 80 / 120 L/min |
| Working voltage DC | 12V / 24V |
| Working voltage AC | 110V / 220V |
| Model options | C, D, J, E |
| Brand | Onederful Hydraulic or OEM/ODM |
What these figures mean in practice.
The 31.5 MPa P/A/B rating covers main oil circuit pressure in most industrial hydraulic systems. The T port rating is lower and varies by size. It reflects the return line pressure, which is usually below the main circuit.
The 80 and 120 L/min flow values place the WEMM in the medium-flow range. It is suited to circuits that do not require very high flow.
The dual voltage options mean the same valve body can be used with different control power supplies. Confirm the coil voltage before ordering.
The sizes, flows and T port pressures are shown as separate ranges on the datasheet. The exact correspondence between size, flow and T port pressure depends on the specific configuration. Contact us with your circuit requirements and we will confirm the correct combination.
Spool Types
Four spool types: C, D, J, E.
Each type gives a different flow path in the neutral position and during shifting. The right choice depends on what the circuit should do when the solenoid is de-energized or the handle is released.
If you are not sure which spool type fits your circuit, send us your hydraulic schematic. We can confirm the model code.
Ordering Information
Specify the following when ordering:
Size: 6 or 10
Voltage: DC 12V / 24V or AC 110V / 220V
Spool type: C / D / J / E
Brand: Onederful or OEM/ODM
Any specific marking or nameplate requirements
OEM service is available with your drawing and specifications.
Company Information
Shijiazhuang Laiye Import & Export Trading Co., Ltd. is part of Hebei Onederful Hydraulic Technology Co., Ltd. Founded in 1988, the company has more than 35 years of experience in hydraulic valve manufacturing, with over 200 employees and customers in more than 20 countries. The factory handles machining, assembly and testing in-house, and every valve is individually tested before shipment with test data filed against its serial number. ISO 9001 certified. OEM/ODM available.
FAQ
Q: What happens when the power fails while the valve is in operation?
A: The solenoid loses its signal. The spool returns to its neutral position according to its type. If the machine needs to be moved or a cylinder needs to be retracted, the emergency handle can be used to shift the valve manually. The handle is accessible without removing any covers.
Q: Does the emergency handle work while the solenoid is still powered?
A: The handle is a backup for power loss or solenoid failure. Under normal operation, the valve is controlled by the electrical signal. Using the handle while the solenoid is energized is not recommended, as the two inputs would fight each other.
Q: How do I know which spool type to order?
A: The spool type decides what happens when the solenoid is de-energized or the handle is released. Some spools hold the actuator in position. Some return it. Some unload the pump. The right choice depends on the fail-safe behavior your circuit needs. If you are not sure, send us the schematic.
Q: Can I change the spool type after delivery?
A: The spool type is fixed at the time of order. It is matched to the valve body during assembly. If your circuit requirements change, contact us before ordering a replacement.
Q: What oil should I use?
A: Mineral oil based hydraulic oil. Keep the oil clean. Contamination is the most common cause of spool sticking and internal leakage.
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