Hydraulic Servo Valves
Hydraulic servo and servo proportional valves for precise, efficient motion control. 2 series. S series for precise servo control, P series for affordable industrial performance. Standard sizes (NG06, NG10, NG16, and more). Flow up to 153 gpm.
Up to 5 gpm
(18 lpm)
Smallest direct drive valve weighing <0.64 lbs (290 g)
1.6 to 16.6 gpm
(6 to 63 lpm)
Ultimate power density weighing only 1.36 lbs (620 g)
13 to 66 gpm
(50 to 250 lpm)
Most efficient direct drive valve for high flow applications
66 to 153 gpm
(250 to 580 lpm)
Next evolution in high-performance, high-flow valves
2.6 to 10.6 gpm
(5 to 40 lpm)
Compact, precise control in small/mid industrial systems
10.6 to 42 gpm
(40 to 160 lpm)
High flow valve for demanding heavy duty applications
42 to 153 gpm
(160 to 580 lpm)
Two-stage industrial servo proportional valves for NG16 systems
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What Makes Us Different?
Setting new standards in performance
Patented additive manufacturing and compact electronics create new standards in power density, performance, and reliability.
Repeatable and reliable results
78% faster step response than traditional two stage valves with low hysteresis, null shift and threshold.
Local inventory with expert support
As an authorized distribution partner of Domin, valves ship same day or next, meaning less downtime, procurement risk, and waiting for critical components.
Model Selector Guide
Use the chart below to match your specifications to the recommended model. Keep in mind that some requirements may overlap. Since every installation has unique flow, response rate, and mounting requirements, use this as a starting point and consult our technical team to verify the best servo valve for your needs.
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If you need… |
Choose… |
Flow |
Why? |
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SIZE / WEIGHT Smallest footprint in a lightweight body |
up to 5 gpm (18 lpm) |
The smallest, lightest direct drive valve on the market at less than 0.65 lbs (300g) and a port circle of 0.48 in (12.2 mm). Ideal for applications with critical space and weight constraints. |
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RESPONSE RATE Fast response rate at standard flow ranges |
1.6 to 16.6 gpm (6 to 63 lpm) |
Domin’s most popular model with highly dynamic performance such as response rates as fast as <3.5 ms, hysteresis as low as <0.2%, and frequency response >250 Hz. |
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HIGH FLOW Balanced performance with high flow capabilities |
13 to 66 gpm (50 to 250 lpm) |
The largest single stage valve in Domin’s product line, offering high flow with fast response rates up to <7 ms. |
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ULTRA HIGH FLOW Extremely high flow capabilities |
66 to 153 gpm (250 to 580 lpm) |
Building on the performance of the S6/P6 Pro as its first stage, this valve offers extremely high flow capabilities while not sacrificing on performance. (S12: <6.5 ms | P12: <12 ms response rate). |
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INDUSTRIAL Accessible pricing for high-volume industrial applications |
2.6 to 153 gpm (5 to 580 lpm) |
The P Series was built specifically for industrial application demands. These valves do not have performance as dynamic as the S Series, but are cost-effective. |
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UPGRADE Drop-in replacement model for popular brands such as Moog and Parker. |
up to 153 gpm (580 lpm) |
All Domin valves are plug-and-play valves with other popular brands due to their mounting footprints, as well as their electrical and hydraulic compatibility. |
What are Domin Valves?
Comparing Leading Valve Designs
Two-Stage Servo Valves
Two-stage servo valves, or mechanical feedback valves, are valued for their compact size and excellent dynamic performance, including fast response times and high-frequency capabilities. However, they come with limitations. The small orifices and high-pressure seals that help maintain performance can also make them more susceptible to contamination and blockages, especially if operated in harsh environments. Additionally, because they lack onboard electronics, they do not deliver the same level of repeatability and accuracy as modern direct drive valves.
Direct Drive Valves
Direct drive valves utilize an electrical feedback design. Contamination and hysteresis occur less frequently with direct drive valves making them more durable for demanding industrial applications. However, this comes with trade-offs in performance and size. Direct drive valves are generally heavier and bulkier in design, with slower step and frequency responses compared to two-step valves. This makes them less suitable for high-performance applications where dynamic response is critical.
Domin Valves
A Domin valve is a considered a servo proportional valve, a hybrid between two-stage servo valves and direct drive valves. Domin merges the benefits, such as the performance, efficiency, precision, and compact size from both without needing to compromise. Domin’s S6 Pro, for instance, offers an unmatched balance of performance and efficiency, boasting a 78% lighter design, a 67% faster response, 340% higher bandwidth, and 73% higher maximum flow compared to an equivalent direct drive valve. To learn more about the differences in designs, read our article here.
How Domin’s Advanced Technologies Shape Performance
Modern Electronics
Slim, on-board electronics replace outdated bulky centralized systems. This improves control, data processing, and communication capabilities while reducing the overall size.
Modern Design and Simulation
Modern design and simulation technologies streamline development, enabling rapid iterations and faster decision-making and production processes.
Magnetic, Hall Effect Sensors
Hall effect sensors provide a more efficient and precise method of measuring position compared to traditional linear transducers. By utilizing magnetic fields, these sensors offer exceptional accuracy in both linear and rotary applications while significantly reducing size and weight.
Advanced Motors
Domin valves are equipped with brushless DC motors, offering superior precision and efficiency over traditional solenoids and limited-angle torque motors. These motors provide consistent performance without the wear issues associated with brushes, leading to longer life and reduced maintenance.
Metal 3D Printing
This patented manufacturing process surpasses the limitations of subtractive machining, allowing the creation of lightweight structures through optimized material distribution and the removal of excess material.
Product Benefits
Exceptional Precision and Accuracy
Cost Savings and Efficiency
Reliability and Durability
How to Build a Domin Servo Valve
Determine Domin Series and Model
Building a custom Domin servo valve begins with selecting the appropriate series and model for the application. The S Series is designed for precise, dynamic motion control where fast response is important, while the P Series is suited for applications that prioritize robust, consistent performance over maximum bandwidth.
Define Valve Parameters
From there, the valve can be configured around your system’s needs. Each selection should be matched to your application’s operating conditions, control requirements, and fluid compatibility. Below are the valve parameters the will determie your code: