Shandong Yikaide Hydraulic Co., Ltd. is one of the leading manufacturers and suppliers of single overcenter valve vbcd-g38-se-fl in China. If you're going to buy single overcenter valve vbcd-g38-se-fl made in China, welcome to get more information from our factory. Also, customized service is available.
The single overcenter valve is a specialized, adjustable hydraulic valve designed to provide unidirectional flow control while offering pilot-assisted reverse flow functionality. Its primary role in hydraulic systems is to allow fluid to flow freely in one direction while blocking reverse flow-unless a specific pilot pressure is applied to enable controlled reverse movement.
The valve's key feature is its ability to maintain a locked position under pressure, preventing backflow that could cause load drift or instability. This ensures safety and precision in hydraulic operations. However, when an external pilot pressure is applied, the valve opens in the reverse direction, permitting controlled movement of the actuator as needed.
By combining reliable load-holding capability with pilot-assisted reverse flow, the single overcenter valve is ideal for applications where safety, stability, and precise control are critical.
product function
Load Holding:
When the directional valve is in the neutral position, the overcenter valve prevents the load from moving by trapping oil inside the hydraulic cylinder. This ensures secure load positioning and prevents drift.
Controlled Movement:
During operations such as lowering a load, the overcenter valve opens when pilot pressure is applied. This allows oil to flow out of the cylinder at a controlled rate, ensuring smooth and stable descent while preventing acceleration due to gravity.
Load Safety (Fail-Safe Protection):
In case of a hose or pipe failure, the overcenter valve automatically blocks oil flow, preventing uncontrolled load movement. This safety feature is critical in applications like cranes and lifting platforms, where accidental descent could lead to hazardous situations.
Products Drawing
Products parameter
| Parameter Model | VBCD-G38-DE-FL |
| H | 55 |
| S | 30 |
| C | 12.5 |
| Oil port thread | G3/8 D=26 L=14 (C1-C2,V1-V2) |
| G1/4 (M) | |
| Oil port standard | ISO 1179-1 |
| Max flow | 40 L/MIN |
| Max pressure | 32 MPA |
| Pilot ratio | 1:4.25 |
| Weight | 1.2KG |
| Sealing form | O-RING(NBR) |
| Sealing ring specifications | φ2.4×IDφ11.6 |
| Operating temperature | -30-100°C |
| Working medium | 46#Anti-wear hydraulic oil |
| Oil cleanliness | NAS1638 9&ISO 4406 20/18/15 |
| Valve body | 45 steel, surface electroplating treatment |
Connect to three-position four-way solenoid directional valve
The oil port V1 of the one-way balancing valve is connected to the A port of the three-position four-way solenoid reversing valve, and the oil port V2 of the one-way balancing valve is connected to the B port of the three-position four-way solenoid reversing valve; the oil port C1 of the one-way balancing valve is connected to the rodless chamber of the luffing cylinder, and the oil port C2 of the one-way balancing valve is connected to the rod chamber of the luffing cylinder.
company profile
Through the digital cloud platform management production line, combined with the ERP system, to achieve intelligent and precision manufacturing, and equipped with a high-standard quality inspection center to ensure that product reliability and consistency reach the industry-leading level.
The company has passed international certifications such as ISO9001, ISO45001, ISO14001 and CE certification, has 28 patents, and is a "provincial-level specialized and new" enterprise.
Yikaide Hydraulic Co., Ltd has always taken "precision intelligent manufacturing, innovation-led" as its mission to promote the upgrading of hydraulic technology and help the high-quality development of the global equipment manufacturing industry!
Products package
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