Industrial Z1S6P1-31-29 Sandwich Type Check Valve

Description:

The Uchida-Rexroth Z1S6P1-31-29 Sandwich Type Check Valve is a direct-operated hydraulic check valve designed to provide leak-free blocking of hydraulic flow in one direction while allowing free flow in the opposite direction. Commonly installed in hydraulic power units, machine tools, injection molding machines, presses, material handling equipment, and industrial automation systems using ISO 4401/CETOP 3 mounting patterns. Maintenance technicians, hydraulic engineers, and system integrators use this sandwich plate valve for hydraulic circuit protection, load holding, equipment repair, and replacement of OEM hydraulic check valves. The Z1S series features a compact sandwich plate design for vertical stacking assemblies and reliable hydraulic system performance.

Applications:

The Uchida-Rexroth Z1S6P1-31-29 Sandwich Type Check Valve is commonly used in hydraulic manifolds, industrial presses, injection molding machines, machine tools, lifting equipment, mobile hydraulics, and factory automation systems where reverse flow prevention and leak-free hydraulic isolation are required. Its sandwich plate configuration simplifies installation between directional control valves and subplates while maintaining a compact hydraulic assembly.

Technical Specifications:

• Brand: Uchida-Rexroth
• Model: Z1S6P1-31-29
• Product Type: Sandwich Type Check Valve
• Valve Type: Direct-Operated Hydraulic Check Valve
• Mounting Style: Sandwich Plate (CETOP 3 / NG6 / ISO 4401-03)
• Nominal Size: NG6 (Size 6)
• Flow Direction: One-Way Free Flow with Reverse Flow Blocking
• Maximum Operating Pressure: 350 bar (5,076 PSI)
• Maximum Flow Rate: 40 L/min (10.6 GPM)
• Cracking Pressure: 0.5 to 5 bar (configuration dependent)
• Mounting Pattern: ISO 4401-03-02-0-05 / NFPA D03
• Hydraulic Fluid: Mineral Oil and Compatible Hydraulic Fluids
• Application: Industrial Hydraulic Power and Motion Control Systems

Common Replacements:

• Bosch Rexroth Z1S6P1-3X/V Sandwich Plate Check Valve
• Bosch Rexroth Z1S6P1-4X/V Check Valve
• Yuken MSW-01 Series Sandwich Check Valve