Inputs

Pick a valve type and class, enter the differential pressure, and set the service factor. Defaults are typical for clean liquid service.

Valve Type

Valve Size (NPS)

ANSI Class

Differential Pressure (ΔP)

Service Condition

Actuator Safety Factor

Required Actuator Output

Quarter-Turn

—

Sized Break Torque

—in-lb

With safety factor applied

Breakdown

Base demand—

× Service factor—

× Safety factor—

Required actuator output —

Suggested Actuator Tier

Light Duty

Pneumatic

Standard

Electric

Heavy Duty

Hydraulic

First-pass estimate — not a final sizing. This gives a quick directional number using industry-typical factors. Actual requirements are valve-specific: per the Emerson Control Valve Handbook, linear-valve thrust is the sum of seat-load, unbalance, and packing-friction forces, while quarter-turn break torque comes from the manufacturer's published torque curve (it varies with seat material, lubrication, temperature, and cycle history). Always confirm the final selection against the valve manufacturer's torque/thrust chart before placing the PO — our engineers do this as part of every sized package. For ESD, fire-safe, or fail-safe service, contact engineering for a full review.

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Need a Verified Actuator Package?

Our engineers verify torque or thrust against the actual valve's manufacturer chart, then match a Rotork, Bettis, or AT Controls package to your supply pressure, voltage, and fail-position.

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