Shijiazhuang Laiye Import& Export Trading Co., Ltd. is one of the leading manufacturers and suppliers of 4p40 hydraulic valve four levers in China, also supports customized service. If you're going to wholesale high quality 4p40 hydraulic valve four levers made in China, welcome to get pricelist from our factory.
The 4P40 Hydraulic Valve Four Levers is a monoblock valve. One casting, four spools, four levers, 40 L/min. There are no sections bolted together, so there are no section seals to worry about and no stack to re-torque. What you order is what you get-the spool count is fixed at four.
That last point matters more than it sounds. A sectional valve lets you add functions later. A monoblock does not. If the machine will always have four functions, that limitation costs you nothing, and you avoid paying for flexibility you will never use. If the machine might grow a fifth function in two years, this is the wrong valve, and it is better to know that now than after the piping is done.
Most monoblock valves in this size class come with one or two spools. Four is less common. It exists because a certain kind of machine-small excavators, loaders, forklifts-has exactly four functions that need direct lever control, and putting all four in one block saves space and simplifies plumbing.
What the Four-Spool Layout Changes on the Machine
A spec sheet tells you the spool count and the flow rate. It does not tell you what the machine feels like afterward. These are the differences that tend to matter in practice.
Piping gets simpler. All four function lines route to one block instead of a stack of sections. Fewer fittings, fewer joints, fewer places for a leak to start. On a compact machine where the engine bay is already crowded, this is often the reason the monoblock gets chosen over a sectional valve in the first place.
The functions share oil without fighting. The 4P40 Hydraulic Valve Four Levers uses a parallel circuit, so all four functions draw from the same pump and can operate at the same time. On a loader stacking material, the boom rises while the bucket curls, and the steering still responds. The operator does not feel one function slow down because another one is working.
The bores stay aligned. Because the body is a single casting and all four spool bores are machined in the same setup, the alignment between them is fixed at the factory. There is no stack to shift, no through-bolts to check, no section seals to replace. This is one of those things that is invisible when it works and expensive when it does not.
What you give up. The spool count cannot change. If the machine later needs a fifth function, the valve has to be replaced, not extended. For equipment with a fixed function list, this trade is straightforward. For equipment with a roadmap, it is not.
Where It Ends Up, and Why
The four-spool configuration points to a specific kind of machine-one that needs four functions, wants them all under direct lever control, and will not need a fifth later.
Small excavators. Arm, bucket, swing, and auxiliary. Four levers, one per function, no mode switching. The monoblock body sits close to the operator, which shortens the lever travel and sharpens the response. On a machine this size, that directness is part of what makes it feel like a professional tool.
Loaders. Boom, bucket, steering, and auxiliary. The parallel circuit is what makes this layout work when stacking material-the boom comes up without lag, and the bucket curl holds its speed even while the steering is active. Operators notice this within the first few cycles.
Forklifts. Mast tilt, lift, side-shift, and auxiliary. The compact monoblock footprint fits in compartments where a sectional stack would not. This is a packaging decision as much as a hydraulic one.
Agricultural equipment. Tractors and harvesters, controlling implement lift, steering, and auxiliary functions. The single-cast body handles dust and vibration better than a stack with exposed section seals, which matters in fields more than it does on a factory floor.
Specifications
| Parameter | Value |
|---|---|
| Nominal Flow | 40 L/min (10.5 GPM) |
| Max Pressure | 250 bar (3626 PSI) |
| Operating Viscosity | 15–75 mm²/s (15–75 CST) |
| Ambient Temperature | -40°C to +80°C |
| Valve Structure | Monoblock, 1–7 spools |
| Control Method | Manual |
| Spool Function | O, Y, P, A |
| Circuit Type | Parallel circuit, power beyond option |
| Valve Sections | 4 spools (fixed) |
| Surface Treatment | Phosphating |
| Rustproof Level | 48h neutral salt spray test |
| Warranty | 12 months against B/L date |
Our factory
Frequently Asked Questions
How can I contact with your sales?
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Nadia WhatsApp:+8619103298301 WeChat:+8619103298301 Mail: nadia.laiye0909@gmail.com
Are you a trading company or manufacturer ?
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We are manufacture
How to make payment?
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Paypal, Western Union, Money Gram or T/T transfer etc
How long does it take to process orders?
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It usually takes 10-14 business days to process most orders for no stock, if stock available, only take 2- 3 business days.
What is the warranty ?
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12 months against B/L date .
Shijiazhuang Laiye Import & Export Trading Co., Ltd., part of Hebei Onederful® Hydraulic Technology Co., Ltd., has been manufacturing hydraulic components since 1988-over 35 years of experience. We are a factory, not a trading company, with around 200 employees and a full in-house production process covering casting, machining, assembly, testing, and phosphating. Every valve is individually tested, not spot-checked, with test data filed against its serial number for full traceability. We export to more than 20 countries, hold ISO 9001 certification, and offer OEM customization, technical support, and a 12-month warranty. Material certificates, test reports, and certificates of origin are available upon request.
40+
More than 40 years pressure valve components experience
200+
Professional hydraulic valve production management team of more than 200 people
10000+
Annual supply of more than 10,000 container of specialized products
20+
Supplying Laiye products to customers in more than 20 countries
Our address
Ximei Building, Zhongshan East Road, Qiaoxi District, Shijiazhuang City, Hebei Province
Phone Number
+8619103298301
nadia.laiye0909@gmail.com
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