Rexroth Z2S6‑60B Sandwich Stack Valve
Product Overview
The Rexroth Z2S6‑60B is a compact pilot‑operated check Hydraulic valve with sandwich stack structure, serving as a reliable pressure‑holding and circuit‑locking component in industrial and mobile hydraulic system. This stacked Hydraulic valve realizes leak‑free blocking of hydraulic actuator ports, maintains stable pressure of hydraulic cylinders, and prevents load drift and accidental self‑movement of the Machine. Adopting NG6 (CETOP 03) standard sandwich mounting dimension, it can be vertically stacked with directional valves, throttle valves and pressure valves to form a compact integrated hydraulic manifold block. With precision poppet sealing and damped pre‑opening design, it achieves ultra‑low internal leakage under long‑term pressure retention, effectively improving the safety, stability and anti‑impact performance of the whole hydraulic system. It is widely used for OEM assembly, routine maintenance and spare‑parts replacement of small construction machinery, injection molding equipment, automation lines and hydraulic presses.
Technical Specifications
‑ Model: Z2S6‑60B
‑ Brand: Rexroth
‑ Product Type: Pilot operated check Hydraulic valve, sandwich stack hydraulic lock valve
‑ Nominal size: NG6 / Cetop 03, compliant with ISO 4401 standard
‑ Maximum working pressure: 315 bar
‑ Rated maximum flow: 60 L/min
‑ Pilot pressure ratio: 3:1
‑ Cracking pressure: 60 bar preset value
‑ Mounting mode: Sandwich stacked installation, fitted between directional valve and sub‑plate manifold
‑ Working medium: Anti‑wear hydraulic oil for mobile and industrial hydraulic system
‑ Operating temperature: -30℃ ~ +80℃ (NBR seals); -20℃ ~ +80℃ (FKM seals)
‑ Feature: Near‑zero leakage poppet sealing, built‑in damping pre‑opening, low pressure drop, compact size, strong interchangeability, suitable for long‑term pressure holding and frequent load operation of small hydraulic Machine.
Working Principle
Pressure oil from the main circuit of the hydraulic system flows forward freely through the one‑way passage inside the Hydraulic valve. Without external pilot pressure, the valve completely blocks reverse oil flow, locking the pressure of the actuator cylinder and keeping the posture of the Machine stable. When the system needs to unload pressure, the pilot pressure signal pushes the internal control spool to open the poppet seat, releasing trapped pressure smoothly with damping effect to avoid hydraulic impact. Wear of the spool, sealing ring or valve seat will cause internal leakage, pressure attenuation and pressure‑holding failure. Replacing a genuine Z2S6‑60B can restore reliable circuit locking function and guarantee stable operation of the hydraulic system. The pre‑opening structure effectively relieves pressure shock during switching, protecting downstream hydraulic components.
Core Advantages
1. Authentic Rexroth hydraulic manufacturing quality, stable high‑pressure resistance, greatly improving the pressure‑holding reliability of the hydraulic system.
2. Miniature sandwich integrated design eliminates extra external oil pipelines, reduces leakage points and overall volume of the hydraulic station, optimizing the layout space of small‑size Machine.
3. Poppet metal‑to‑metal sealing structure achieves ultra‑low internal leakage, maintaining load stability even after long‑time shutdown of the equipment.
4. Damped pre‑opening design reduces pressure spikes and vibration during valve switching, lowering fatigue damage to the whole hydraulic circuit.
5. Standard NG6 universal interface, fully compatible with mainstream small‑size hydraulic valve groups, direct replacement without modifying original manifold plates, convenient for on‑site maintenance and system transformation.
Application Range
Z2S6‑60B pilot check Hydraulic valve is an essential safety control element for hydraulic circuits. It is widely applied to small construction machinery, injection molding machines, hydraulic bending machines, aerial work platforms, automated production lines and other hydraulic‑driven Machine. Suitable for equipment manufacturers, hydraulic system maintenance workshops and global spare‑parts suppliers for routine maintenance, system upgrading and component replacement.
