SDX Series

Champion Valve’s SDX wafer‑style single‑disc check valve is engineered for applications requiring precise control of reverse‑flow protection and adjustable dynamic response. Its externally mounted, torque‑adjustable extension spring allows operators to fine‑tune cracking pressure and accelerate disc closure, improving surge mitigation in systems with variable flow profiles. Optional lever or lever‑and‑weight assemblies provide mechanical position indication and manual clearing capability, while the isolated external spring design eliminates media exposure and enables adjustment without shutdown. The SDX is well‑suited for pumping systems, blower and compressor discharge, industrial process lines, chemical transfer, water and wastewater treatment, power generation, and general utility service where customizable closing characteristics and low‑weight, space‑efficient valve geometry are critical.

• Externally Mounted Extension Spring: Provides adjustable torque to fine‑tune cracking pressure and accelerate disc closure.
• Adjustable Spring Tension: Allows operators to match valve response to system dynamics without removing the valve from service.
• Optional Lever Assembly: Offers visual disc‑position indication and manual override capability to clear seat obstructions.
• Lever‑and‑Weight Configuration: Enables controlled, damped closure for systems with fluctuating flow or high surge potential.
• Media‑Isolated Spring: External placement prevents corrosion or fouling from process fluids, extending service life.
• Ultra‑Lightweight Wafer Body: Up to 85% lighter than full‑body swing checks, reducing structural load and installation effort.
• Space‑Efficient Geometry: Short face‑to‑face dimension simplifies piping layouts and minimizes footprint.
• Right‑ or Left‑Hand Assemblies: Supports flexible installation based on system layout and operator access.
• Low‑Maintenance Construction: External adjustment and minimal internal wear components reduce downtime and lifecycle cost.
• Customizable Dynamic Response: Spring, lever, and weight options allow tailored closing characteristics for pumps, compressors, and process systems.

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