Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.
| Payment Terms | Western Union,T/T,D/P,D/A,L/C |
| Supply Ability | 100 |
| Delivery Time | 2 weeks |
| Packaging Details | wooden box |
| Standards | ISO 7368 |
| Thread | 7/8" - 14 UN |
| Size Code | 16 |
| Variant | LC16DB20D7X/ |
| Part Number | R900912546 |
| Brand Name | Rexroth |
| Model Number | LC16DB20D7X/ |
| Certification | ISO |
| Place of Origin | German |
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Product Specification
| Payment Terms | Western Union,T/T,D/P,D/A,L/C | Supply Ability | 100 |
| Delivery Time | 2 weeks | Packaging Details | wooden box |
| Standards | ISO 7368 | Thread | 7/8" - 14 UN |
| Size Code | 16 | Variant | LC16DB20D7X/ |
| Part Number | R900912546 | Brand Name | Rexroth |
| Model Number | LC16DB20D7X/ | Certification | ISO |
| Place of Origin | German | ||
| High Light | Rexroth hydraulic plug-in valve ，German Rexroth LC16DB20D7X valve ，Rexroth valve with warranty | ||
|
Parameter |
Description / Value |
|---|---|
|
Manufacturer & Model |
Rexroth, Series LC/LCx (Plug-in Cartridge) |
|
Part Number |
R900912546 |
|
Variant |
LC16DB20D7X/ |
|
Function |
Pilot-Operated Check Valve (Logic Element) |
|
Valve Type |
Screw-in, plug-in cartridge valve (2-way, poppet type) |
|
Size Code |
16 (NG6 size cavity) |
|
Cavity Standard |
ISO 7368 (Standard cavity for size 16) |
|
Thread |
7/8" - 14 UN (typical for Size 16) |
|
Configuration |
2-port (A, B) poppet-type logic cartridge. Acts as a pilot-operated check valve. Allows free flow from A→B, blocks flow from B→A unless pilot pressure is applied. |
|
Pilot Control |
Internal or external pilot for opening. D7X code indicates a specific pilot ratio and control option. |
|
Pilot Ratio |
Defined by "D7X" code. Common ratios are 3:1, 4:1, or 7:1. The exact ratio for D7X must be confirmed via datasheet. |
|
Max. Operating Pressure |
Up to 350 bar (depends on cavity and system) |
|
Max. Flow Rate |
High (dependent on pressure drop). For Size 16, can exceed 200 L/min. Consult Cv or flow curves. |
|
Leakage (Blocked) |
Virtually zero (poppet design) |
|
Seals |
Typically standard Buna-N (NBR) or FKM, depending on order code. The suffix (after the slash) is empty in this part number; standard seals are implied. |
|
Fluid Compatibility |
Mineral-based hydraulic oils (HL, HLP) to ISO 11158. |
|
Operating Temperature |
-20°C to +80°C (with standard seals) |
|
Cracking Pressure |
Very low, typically < 1 bar for free flow direction (A→B). |
|
Application |
Used as a hydraulic "lock" or load-holding valve. Prevents actuator movement (e.g., cylinder drift) by blocking flow from B→A. Can be opened by applying pilot pressure to allow controlled movement. Essential for safety in presses, lifts, and any system with suspended loads. |
|
Cavity Requirement |
Must be installed in a correctly machined ISO 7368 Size 16 cavity (e.g., LC..-16). The cavity design is critical for function and pressure rating. |
|
Standards |
ISO 7368 (Cavity dimensions) |
| R900921428 LC25A00E7X/V |
| R900924388 LC25B40E7X/V |
| R900925274 LC32A05E7X/V |
| R900925950 LC16A05D7X/V |
| R900926306 LC40B00E7X |
| R900926717 LC25A40D7X/V |
| R900927010 LC32B05D7X/V |
| R900927012 LC32B05E7X/V |
| R900927154 LC16DB30A7X |
| R900927969 LC40DB40E7X |
| R900927973 LC40A40E7X |
| R900928456 LC16A05E7X/V |
| R900928559 LC25A40E7X/V |
| R900928560 LC25DB40E7X/V |
| R900928566 LC32B40E7X/V |
| R900928821 LC40DB20D7X |
| R900928823 LC50B40E7X |
| R900928826 LC63A20E7X |
| R900929152 LC25DB00E7X/V |
| R900929153 LC32A00E7X/V |
| R900929381 LC25B00E7X/V |
| R900929382 LC25A10E7X/V |
| R900929665 LC50B20E7X |
| R900929795 LC80A40E6X/V |
| R900929926 LC32A40E7X/V |
| R900929929 LC32A20E7X/V |
| R900929931 LC32DB40E7X/V |
| R900929935 LC50A40E7X |
| R900929940 LC63B40E7X |
| R900930441 LC16A20D7X/V |
| R900930559 LC16DB80D7X/V |
| R900931262 LC16A40D7X/V |
| R900931361 LC16A10E7X/V |
| R900932074 LC16DB20E7X/V |
| R900932338 LC32DB00D7X |
| R900932339 LC32DB00E7X |
| R900933141 LC25DB80E7X |
| R900933193 LC25A00D7X/V |
Q1: What is the primary function of this component?
A: This is a pilot-operated check valve (often called a "logic cartridge" or "load-holding valve"). Its core functions are:
Free Flow in One Direction: It allows hydraulic fluid to flow freely from port A to port B (like a standard check valve).
Positive Blocking in the Opposite Direction: It completely blocks flow from port B to port A with near-zero leakage, effectively "locking" an actuator (like a cylinder) in place, even under high load.
Pilot-Controlled Opening: The block from B→A can be overcome by applying an external pilot pressure signal, which opens the valve and allows controlled flow in the reverse direction.
Q2: How is it different from a simple throttle or standard check valve?
A: Unlike a throttle valve for speed control or a simple spring-loaded check valve, this is a poppet-type, pilot-operated cartridge designed for load-holding and safety. It provides a bubble-tight seal to prevent load drift, a critical safety feature that standard valves cannot guarantee. Its opening is controlled by a separate pilot pressure line, not just by flow direction.
Q3: What do the codes in "LC16DB20D7X/" mean?
A: This is a detailed product identifier:
LC: Product series for screw-in cartridge logic elements.
16: The size, corresponding to an NG6 cavity (e.g., 7/8"-14 UN thread).
DB20: Indicates the specific poppet and sleeve configuration (dimensions, flow path).
D7X: The most critical code, defining the pilot control configuration. "D" typically refers to a specific pilot piston area ratio (e.g., 3:1, 4:1, 7:1), and "7X" defines the control and damping options. Consulting the datasheet for the exact meaning of D7X is essential.
Company Details
Business Type:
Manufacturer,Exporter
Total Annual:
1 million-10 millon
Employee Number:
>50
Ecer Certification：
Verified Supplier
Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha... Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha...
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