840 Series Control Valves for General Applications

The 840 Series Cage-Guided Valve: Advanced Technology for High-Performance Applications

The 840 series cage-guided valve represents the latest innovations in control valve technology, engineered to manage a diverse range of clean liquids and gases under high-pressure differentials. With customizable configurations of flow-to-open or flow-to-close trims, this valve is ideal for demanding applications. Typically, flow-to-close is optimized for liquid services, while flow-to-open is preferred for steam and gas systems.

The 840H drilled-hole-cage valve is specifically designed for severe service applications that require anti-cavitation or low-noise trim. This design effectively addresses challenges like high-pressure drops, which can lead to erosion, noise, and vibration—issues that can compromise process control. The 840H serves as a reliable solution for mitigating these severe conditions, ensuring operational stability.

Key Features of the 840 Series Valve

• Versatile Design: The 840 series accommodates multiple trim types, offering flexibility for various applications. Its cage-guided construction minimizes plug vibration and enhances performance stability throughout its travel range.
• Quick Change Trim: Internal components can be easily accessed and replaced by removing the bonnet and cage, streamlining maintenance.
• Advanced Trims: Options include single P-port, multi-step, and V-notch type cages, designed to meet specific application needs.
• Multi-Spring Actuation: The multi-spring design reduces hysteresis and deadband, ensuring precise control.
• Fail-Safe Operation:
  • Fail-to-close mode is standard for loss of air scenarios.
  • Fail-to-open options are also available.
  • Compatible with diaphragm, piston, hydraulic, and electric actuators.
• Comprehensive Accessories: A full range of accessories is available to meet unique process requirements.

Engineered for High-Performance Applications

The 840 series excels in controlling steam, gas, and liquids, providing reliable operation even in extreme conditions. Its innovative features and ease of maintenance make it a top choice for industries needing robust and efficient control valve solutions.