Fisher Lever-Lock | Manual Handlever Actuator | Rotary Valve Control｜Fisher supplier

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• Positive Locking Positions: The actuator utilizes a ductile iron quadrant plate featuring distinct notches. This configuration allows the operator to lock the valve in fully open, fully closed, or various intermediate positions, ensuring stable throttling without the risk of the valve “creeping” due to fluid dynamic forces.

• Robust Material Construction: Constructed from high-strength ductile iron, the handle, grip, and quadrant plate are engineered to withstand heavy industrial use and outdoor exposure. This durability is essential for manual valves located in high-traffic or harsh processing areas.

• Tamper-Resistant Security: For safety-critical applications where unauthorized operation must be prevented, the handle can be equipped with a padlock. This allows the valve to be securely locked in either the open or closed position, supporting Lockout/Tagout (LOTO) safety protocols.

• Remote Feedback Compatibility: Despite being a manual device, the Lever-Lock can be fitted with limit switches. This enables the integration of manual valves into a digital control system by providing remote operators with electronic confirmation of the valve’s current position.

• Repeatable Travel Stops: An optional positioning device can be installed to set repeatable mechanical stops anywhere between 0 and 90 degrees of rotation. This is particularly useful for processes that require a specific, consistent “maximum flow” or “minimum bypass” setting.

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การใช้งานหลัก

• Manual Bypass Lines: Throttling control for cooling water or process bypass around automated control valves.

• Isolation Service: Simple on/off manual isolation for pump suction and discharge lines.

• HVAC and Air Handling: Manual adjustment of butterfly valves in large-scale ducting or utility water systems.

• Tank Farm Management: Secure, lockable manual control for storage tank inlet and outlet valves.