Spool hydraulic directional control valve

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Product description
Moog has offered valves with advanced features for decades, designed for demanding and hazardous environments. Fail‑safe variants of select valve models are available for machines where maximum protection of personnel and equipment is required. Our explosion‑proof, flameproof and intrinsically safe products incorporate specific designs and modifications needed for hazardous‑area certification.

Safety and applications
For customers operating machines in challenging environments, Moog servo and proportional valves provide enhanced safety features such as fail‑safe options, hazardous‑area certifications (e.g. ATEX) and tailored performance modifications to meet application requirements.

Features

• Fail‑safe variants
• Explosion‑proof valves with intrinsically safe, flameproof (pressure‑containing) and increased‑safety constructions certified to ATEX and other standards
• Spool null cuts
• Lightweight constructions and special wiring options for specific installation conditions
• Spool‑in‑body / bushing and spool assembly construction variants
• Supported valve functions: flow (Q), pressure (p), combined (p/Q)

Resources

• Overview - Products for Use in Hazardous Environments
• Datasheet - Explosion‑proof Digital Control Servo and Proportional Valves
• Operator manual - D636K and D638K servo valves for gas‑hazardous areas
• Operator manual - D637K and D639K servo and proportional valves for gas‑hazardous areas
• Operator manual - D66xK servo and proportional valves for gas‑hazardous areas
• Operator manual - D67xK proportional valves for gas‑hazardous areas
• Operator manual - D94xK proportional valves for gas‑hazardous areas

Technical characteristics / specifications

• Available fail‑safe variants
• Versions certified for use in hazardous/explosive atmospheres (e.g. ATEX), including intrinsically safe and pressure‑containing constructions
• Spool designs with null cuts and multiple spool‑assembly construction options (spool‑in‑body / bushing)
• Available in lightweight constructions with special wiring for specific operating conditions
• Supported valve control modes: flow (Q), pressure (p), combined (p/Q)
• Available technical documentation: overviews, datasheets and operator manuals for D636K, D638K, D637K, D639K, D66xK, D67xK and D94xK (PDF datasheets and manuals)