Z2FS Type Sandwich-Type One-Way Throttle Valve
Detailed Technical Overview
1. Core Definition & Technical Features
• Model Classification & Structure: The Z2FS series belongs to sandwich-type (modular) one-way throttle valves, featuring a "sandwich" interlayer design for vertical stacking in hydraulic systems. Compliant with DIN 24340 and ISO 4401 standards, typical models include Z2FS6, Z2FS10, Z2FS16, etc., supporting multi-model integration.
• Functional Logic:
• One-Way Throttling: Default allows unidirectional flow (e.g., A→B) while automatically sealing during reverse flow to prevent backflow; precise flow control via adjustable orifice area.
• Bidirectional Control: Some models (e.g., Z2FS10-5-3X/V) enable bidirectional flow regulation through installation position or model selection, supporting inlet/outlet throttling.
• High-Pressure Tolerance: Operational pressure differential up to 315 bar (higher in specialized models), suitable for high-load industrial applications.
• Temperature & Media Compatibility: Temperature range -30℃ to +120℃ (NBR seals), extended to -20℃ to +200℃ with fluororubber (FKM) seals; compatible with mineral oils, phosphate esters, and other hydraulic fluids.
2. Structural Design & Installation Characteristics
• Modular Architecture:
• Stackable design allows integration with directional valves, pressure valves, etc., forming compact hydraulic circuits while saving installation space.
• Port layout adheres to DIN 24340 Type A/ISO 4401 standards, compatible with various mounting bases (e.g., CETOP-RP121H).
• Adjustment Mechanism:
• Equipped with lockable rotary knobs, hex bolts, or scaled adjustment screws for manual/remote precise orifice opening control.
• Symmetrical spool design in dual one-way throttle models (e.g., Z2FS10) enables bidirectional flow restriction and unidirectional free return.
• Material & Durability:
• Valve bodies crafted from cast steel or stainless steel (304/316), surface-hardened and polished for wear resistance; seals use NBR, FKM, or other corrosion-resistant materials.
• Precision-machined spools reduce friction coefficients, extending service life.
3. Application Scenarios & Industry Adaptability
• Typical Applications:
• Industrial Equipment: Speed control in injection molding machine clamping, machine tool feed mechanisms, and hoisting device hydraulic circuits.
• Construction Machinery: Hydraulic cylinder locking and pressure maintenance in excavators, loaders, and mining equipment backflow protection.
• Specialized Environments: High-pressure systems in metallurgy, marine hydraulic steering gears, and automation production line flow regulation.
• Industry Advantages:
• Ensures system safety and stability in construction machinery via hydraulic cylinder locking and pressure maintenance.
• Serves as a core flow control element in industrial automation, supporting remote electrical control (electromagnetic-driven models).
• Replaces traditional throttle valves for modular integration, reducing system complexity and maintenance costs.
