BAUMANN 84431SA Control Valve

Description

BAUMANN 84431SA Control Valve

Product Dimensions：

The BAUMANN 84431SA is a high-performance pneumatic bellows actuator, typically paired with Fisher or Baumann control valves. It is renowned for its compact design, precision, and reliability in demanding industrial environments.

Here is a detailed breakdown of the product in English.

## Product Description

The Baumann 84431SA is a multi-spring, pneumatic bellows actuator. It is specifically designed to provide high positioning accuracy and rapid response for small-to-medium control valves. Its stainless steel construction and bellows seal make it an ideal choice for applications requiring high purity or resistance to corrosive atmospheres.

## Technical Parameters

## Product Advantages

• Corrosion Resistance: The all-stainless steel construction ensures longevity in harsh chemical or offshore environments.

• Compact & Lightweight: Its low-profile design allows for installation in tight spaces where traditional diaphragm actuators won’t fit.

• High Precision: The multi-spring design provides a linear and stable response to signal changes, ensuring tight process control.

• Low Maintenance: The bellows seal eliminates the friction associated with traditional O-rings or packing, reducing wear and tear.

• Field Reversible: The action can be changed from “fail-open” to “fail-closed” without needing additional parts.

## Important Considerations (Safety & Maintenance)

• Air Quality: Use clean, dry, and oil-free instrument air to prevent debris from damaging the bellows.

• Pressure Limits: Never exceed the maximum allowable supply pressure printed on the nameplate; doing so may rupture the bellows.

• Alignment: Ensure the actuator stem is perfectly aligned with the valve stem to prevent lateral stress.

• Safe Removal: Before performing maintenance, ensure the air supply is disconnected and any stored spring energy is safely released.

## Typical Applications

The 84431SA is widely used in industries that require “clean” or “precise” fluid handling:

1. Pharmaceuticals: For sterile piping systems and high-purity water control.

2. Food & Beverage: Handling additives or cleaning-in-place (CIP) fluids.

3. Chemical Processing: Controlling corrosive reagents in pilot plants or small-scale production lines.

4. Semiconductor: Precision gas or chemical dosing.

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