1. Model Code Breakdown

• DB: Pressure relief cartridge valve (seat type, no area difference at port B)

• 20: Standard design code for relief function

• D: Spool poppet, no orifice (standard for relief)

• 6X: Component series 6X (for sizes 80/100; unchanged installation dimensions)

2. Technical Specifications

• Size: NG16 / NG25 / NG32 (depends on LC prefix)

• Max Operating Pressure: 420 bar

• Max Flow: Up to 7000 L/min (size‑dependent)

• Function: Pilot‑operated pressure relief, limits system pressure

• Seal Material: NBR (standard), FKM optional

• Mounting: DIN ISO 7368 standard cartridge cavity

• Pilot Supply: Internal (standard)

3. Key Features

• ✅ Pilot‑operated: Precise pressure control, low hysteresis

• ✅ Seat design: Tight sealing, no leakage at port B

• ✅ High pressure rating: 420 bar for heavy‑duty applications

• ✅ Compact cartridge: Space‑saving, easy integration into manifolds

• ✅ Series 6X: Interchangeable with 7X series, same mounting

4. Application

• Hydraulic power units (HPUs)

• Industrial machinery, presses, injection molding

• Mobile hydraulics (excavators, cranes)

• System pressure limiting and overload protection

5. Compatible Control Covers

• LFA…DBW2: With built‑on directional valve for unloading

• LFA…DB: Manual pressure adjustment