Fisher 1051 Pneumatic Rotary Actuator
Introduction

Key Advantages
1.Precise Reset
Single-acting spring return, 90° fixed rotation, repeat torque 25–150 in-lb, torque repeatability ≤1%.
2.High Control Accuracy
Works with Fisher DVC positioners, ±0.5% FS positioning accuracy.
3.Fast Pneumatic Response
Air supply 20–100 psi, full-stroke response < 2s.
4.Wear-Resistant Design
HRC58–62 high-hardness alloy bearings, friction coefficient ≤0.0005, 100,000-cycle wear-free, torque deviation ≤0.05%.


Typical Product Specifications
Actual specifications may vary depending on size and spring range
|
Parameter |
Description |
|
Product Type |
Pneumatic rotary actuator |
|
Action |
Single-acting, spring return |
|
Control Mode |
On/off or throttling (with positioner) |
|
Rotation Angle |
90° |
|
Valve Compatibility |
Ball valves, butterfly valves |
|
Air Supply |
Instrument air |
|
Mounting |
Direct mount / bracket mount |
|
Available Styles |
Style H / Style J |
|
Applicable Industries |
Oil, chemical, power, water treatment |
Fisher 1051 vs Fisher 1052
Which Rotary Actuator Should You Choose?
Both Fisher 1051 and Fisher 1052 are spring-return pneumatic rotary actuators widely used for ball valves and butterfly valves.
They share a similar structure, but their control behavior and application flexibility are different.
If you're unsure which one fits your application, this quick guide will help you decide.
Side-by-Side Comparison
|
Feature |
Fisher 1051 |
Fisher 1052 |
|
Actuator Type |
Pneumatic rotary actuator |
Pneumatic rotary actuator |
|
Action |
Single-acting, spring return |
Single-acting, spring return |
|
Primary Use |
On/off control or throttling with positioner |
On/off control or throttling with or without positioner |
|
Spring Adjustability |
Fixed spring |
Adjustable spring |
|
Control Precision |
High (with valve positioner) |
Moderate without positioner / High with positioner |
|
Installation Flexibility |
Standard |
More flexible |
|
Typical Application |
Automated control loops |
Simple control or cost-sensitive systems |
|
Maintenance |
Low |
Low |
|
Industry Adoption |
Very high |
High |
How to Choose the Right Model
Choose Fisher 1051 if:
You are using or planning to use a digital valve positioner
High control accuracy is required
The valve is part of an automated control system
Process stability and repeatability are critical
Best choice for control valves in continuous processes.
Choose Fisher 1052 if:
You need a simpler setup without a positioner
Cost or system simplicity is a priority
The application allows spring-based throttling
Flexibility in field adjustment is required
Ideal for basic control or on/off applications.
If you can tell us:
- Valve type (ball or butterfly)
- Fail position (fail open or fail close)
- Whether a valve positioner is used
- Our engineers can quickly recommend the right model and configuration.
Typical Applications for Both
- Oil & gas and petrochemical plants
- Chemical processing facilities
- Power generation systems
- Water and wastewater treatment
- Both models are proven, durable, and widely accepted across industries.
Company Strengths
1.Years of Industry Experience
Deep knowledge of Fisher actuators and valve applications across industries.
2.100% Genuine Products
No refurbished units, clear and traceable sourcing.
3.Engineer-Level Technical Support
Full support from selection and configuration to application guidance.
4.Stable Supply & Global Delivery
Serving both domestic and international customers with reliable lead times.

FAQ
Q1: Can the Fisher 1051 be used for throttling control?
Yes. For precise throttling control, it is typically used with a valve positioner such as the Fisher DVC series.
Q2: What is the difference between Style H and Style J?
The main difference is the output shaft rotation direction, which is selected to match valve orientation and fail-action requirements.
Q3: What is the typical delivery time?
Delivery time depends on the configuration. Common models are available with fast shipment - please contact us to confirm.
Q4: Do you provide warranty?
Yes. All products come with an 18-month warranty, along with technical support.
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