YXL-160 yōuxiān fá 10 YXL-160 Priority Valve

I. Core Positioning and Principle

Type: Differential pressure reducing valve, load-sensing priority valve (static/dynamic LS signal).

Core Function: Regardless of load/pump flow changes, prioritizes ensuring steering gear flow = steering wheel speed × steering gear displacement; when not steering, almost all flow is supplied to the working device (boom, bucket, etc.), achieving energy saving and high efficiency.

Oil Port Definitions:

P: Oil Inlet (connects to steering pump)

CF: Priority Oil Outlet (connects to steering gear)

EF: Secondary Oil Outlet (connects to multi-way valve/working system)

LS: Load Sensing Port (connects to steering gear LS)

T: Oil Return Port (connects to oil tank)

II. Key Technical Parameters (YXL-F160L Series)

Parameter Specifications Remarks

Maximum Inlet Flow Rate 160 L/min Nominal Flow Rate, compatible with large pumps

Rated Pressure 16 MPa Continuous Operation

Peak Pressure 20 MPa Short-Term Overload

Control Pressure (LS) 0.45 / 0.7 / 1.05 MPa Common N4.5 / N7 / N10.5 Versions

Steering Safety Valve Pressure 6.3–16 MPa Factory setting according to requirements

Oil Port Thread (L-type) P/EF: G3/4; CF: G1/2; LS/T: G1/4 Plate type / Threaded installation

Medium: 46#/68# anti-wear hydraulic oil; Oil temperature: -20℃～80℃

Compatible with steering gears BZZ5, BHR5, BPB5, TLF1, etc.; Load-sensing fully hydraulic steering gear

Weight: Approx. 5–5.5 kg; Cast iron valve body

III. Structure and Features

Differential pressure reduction + LS signal control: The valve core automatically adjusts with the LS pressure, ensuring stable CF flow and fast response.

Built-in steering safety valve: Automatic pressure relief during steering overload, protecting the steering gear and cylinder.

Internal/external control optional: Adaptable to different system layouts.

Compact and standardized structure: Plate/flange mounting, easy replacement with imported valves of the same specifications.

Energy-saving: P→EF direct flow when not steering, almost no throttling loss.

IV. Typical Applications

Construction machinery: 5T loaders (ZL50, LG956, Lingong 953), graders, road rollers, heavy-duty forklifts. Agricultural machinery: High-horsepower tractors, combine harvesters, forage harvesters (with combined steering and working devices).

Industrial vehicles: Heavy-duty forklifts, tractor-trailers, sweepers.

V. Model Description (YXL-F160L-N7)

YXL: Series Code (Priority Valve)

F: Load Sensing Type

160: Maximum Flow Rate 160 L/min

L: Threaded Connection (F for Flange)

N7: Control Pressure 0.7 MPa (N4.5=0.45MPa, N10.5=1.05MPa)

VI. Comparison with YXL-150

Model | Maximum Flow Rate | Control Pressure | Applicable Equipment

YXL-150 | 150 L/min | 0.7 MPa | 4T Loader, Medium-duty Forklift

YXL-160 | 160 L/min | 0.45/0.7/1.05 MPa | 5T Loader, High-horsepower Agricultural Machinery