Sun Hydraulics (Helios Technologies) is a leading manufacturer of high-performance hydraulic cartridge valves trusted in construction equipment, agricultural machinery, industrial presses, and mobile hydraulic systems worldwide. The PPFB-LBN is a full-flow poppet-type pressure relief valve in Sun's B-size cartridge body — a critical system protection component that limits maximum circuit pressure to a preset value, preventing overpressure damage to pumps, cylinders, motors, hoses, and other hydraulic components. When a relief valve fails or drifts out of calibration, hydraulic systems can experience pressure spikes, component failures, erratic operation, or complete system shutdown. This brand-new replacement valve is a direct fit for Sun Hydraulics PPFB-LBN cartridge body applications.

✅ Direct-Fit Compatibility

• Manufacturer: Sun Hydraulics (Helios Technologies)
• Valve Type: Pressure relief valve — full-flow poppet type, B-size cartridge body
• Direct replacement for Sun Hydraulics PPFB-LBN — fits standard Sun B-size cartridge cavity
• No modifications required

🔧 Product Highlights

• 100% Brand New Replacement: Not rebuilt or refurbished — starts with a full service life
• OEM-Spec Pressure Setting: Factory-calibrated to correct cracking pressure for reliable system protection
• Full-Flow Design: Handles full circuit flow at relief pressure — no flow restriction under normal operating conditions
• Protects the Entire Hydraulic System: Prevents overpressure damage to pumps, cylinders, motors, hoses, and valves
• Standard Sun B-Size Cartridge Body: Fits any hydraulic manifold or valve block machined to Sun Hydraulics PPFB cavity specifications
• No Dealer Markup: OEM-equivalent quality at aftermarket pricing

📦 What's Included

• 1 × Pressure Relief Valve Cartridge (PPFB-LBN)

🔑 Key Specs

• Part Numbers: PPFB-LBN, PPFBLBN
• Valve Type: Pressure relief valve — full-flow poppet type, B-size cartridge
• Manufacturer: Sun Hydraulics / Helios Technologies compatible
• Condition: 100% New Replacement

Please verify your existing part number, cavity size (B-size), and required pressure setting before ordering. Contact us for fitment confirmation if needed.