Shijiazhuang Laiye Import& Export Trading Co., Ltd. is one of the leading manufacturers and suppliers of 2p40 manual directional hydraulic control valve in China, also supports customized service. If you're going to wholesale high quality 2p40 manual directional hydraulic control valve made in China, welcome to get pricelist from our factory.
Products Description
Production Quality – What We Actually Check
2P40 Valve Manufacturing Highlights
- In-House Production: Cast, machined, and assembled at our Shijiazhuang facility.
- Casting: HT200 gray iron, batch-tested for strength and hardness.
- Precision Machining: 5-axis CNC centers ensure tight tolerances (±0.005 mm).
- High-Performance Spools: Centerless ground to 0.25 µm Ra and hard-chrome plated.
- Hand Lapping: Ensures optimal spool-bore clearance (0.006-0.012 mm).
- 100% Individual Testing: Every valve is tested at 250 bar for performance and leakage, with a unique serial number and test report.
Products Specification
| Parameter | Value |
|---|---|
| Rated flow | 40 L/min (10.5 US GPM) |
| Max pressure (inlet) | 250 bar (3625 psi) |
| Max pressure (working ports) | 250 bar |
| Spool options | 1, 2, 3, 4, 5, or 6 spools |
| Control type | Manual lever (spring-centered or detent) |
| Valve type | Monoblock (one-piece casting) |
| Working viscosity | 15 - 75 mm²/s (15-75 cSt) |
| Ambient temp range | -20°C to +80°C |
| Port options | G3/8, G1/2, M18x1.5 |
| Weight (1 spool) | approx 3.2 kg |
| Weight (4 spool) | approx 7.5 kg |
Customer Case – Log Splitter Detent Failure on a Cheap Clone
A Vermont firewood company purchased a log splitter fitted with an off-brand 2P40 replica valve. Its extend spool detent disengaged prematurely under load, causing the wedge to retract unexpectedly - a major safety hazard.
We provided our genuine 2P40 valve equipped with a heavy-duty detent (25 N release force). Featuring a hardened steel ball and die spring, it replaces the fragile stamped leaf spring used in low-cost alternatives. After 500 hours of operation, the customer saw no accidental disengagement. They subsequently placed an order for 10 units for their rental equipment fleet.
Questions From The Field
Q:1.Can I add more spools to my existing 2P40 monoblock valve later?
No. A monoblock valve is cast as a single piece. You cannot add sections. Order the correct number of spools upfront. We offer 1 through 6 spool versions – most are in stock.
Q:2.What is the difference between spring-centered and detent spools?
Spring-centered: lever returns to neutral automatically when released. Use for momentary functions (lift, lower, crowd, dump). Detent: lever locks in position until manually pulled back. Use for functions that need to stay on (log splitter wedge, auxiliary motor). You can mix spool types in the same valve.
Q:3.My 2P40 valve leaks internally. How much is acceptable?
In neutral position, internal leakage from P to A or P to B should be under 10 ml/min at 250 bar. If you see cylinder drift faster than 5 mm per minute, the spool is worn. Causes: contaminated oil, wrong viscosity, or worn coating. Replace the spool or the valve. We sell individual spools separately.
Q:4.The lever feels stiff. How to resolve this issue?
Check system pressure. Lever resistance rises along with pressure. If pressure is below 250 bar, debris is likely causing the spool to bind.
Remove the end cap and manually push the spool. If sticking occurs, flush the valve with clean diesel.
If the problem persists, the spool or bore may be damaged.
Our 2P40 is fitted with a roller cam, while low-cost valves adopt sliding cams that wear easily and lead to jerky operation. Feel free to contact us for further inspection.
Q:5.What is the "float" position and do I need it?
Float is a fourth spool position (A - Neutral - B - Float). In Float, both A and B ports connect to tank. The cylinder moves freely. Essential for: loader bucket following ground contour, snowplow blade floating on pavement. Specify "float spool" when ordering – standard spools do not have this position.
Q:6.What warranty do you offer on this manual hydraulic directional valve?
18 months from shipment. Covers manufacturing defects: internal leakage exceeding spec, detent failure, cracked body (test pressure only – not impact damage), lever mechanism seizure. Not covered: contamination damage, wrong oil, freezing from water in oil, or physical damage. For any covered failure, we air-ship a replacement at no charge. You keep the defective valve.
Shijiazhuang Laiye Import&Export Trading Company
Founded in 1988, Shijiazhuang Laiye Import & Export Trading Co., Ltd. is affiliated with Hebei Wendefu Hydraulic Technology Co., Ltd. As a high-tech enterprise, we specialize in the R&D, production and sales of hydraulic valves, including directional, pressure and flow valves, as well as related fittings and custom parts.
Backed by solid technical expertise and advanced processing capabilities, we engage senior industry experts as consultants. Leveraging our strengths in talent and technology, our products are widely sold across Russia, Europe, the Middle East, South America and Asia, earning high recognition from global clients.
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