HISTORY

2017-2019

2006-2017

2006: IKNOW ACTUATOR Co., Ltd. was established.

2013: IKNOW independently developed "ZH series linear

stroke pneumatic actuators" and achieved mass production.

IKNOW obtained multiple "utility model patent certificates".

2017: "ISO 9001 Quality System Certification"

"SIL 3 Safety Integrity Level Certificate"

"Science and technology SMEs in Zhejiang Province".

2018: IKNOW independently developed the "rod-type scotch yoke pneumatic actuator" and achieved mass production. "High-growth technology-based SMEs in Zhejiang Province".
2019: IKNOW independently developed "rodless scotch yoke pneumatic actuator" and achieved mass production. "IKNOW" trademark successfully registered in the US and UK.

2021-2023

2021: IKNOW obtained two "invention patents".
2022: IKNOW obtained "TUV SIL 3 Functional Safety Certification" for its full range of pneumatic actuator products.
2023: "National High-Tech Enterprise" "National-level technology-based SMEs" "Special production equipment license".

2024-2025

2024: "Specialized, Refined, Characteristic, and Innovative SMEs in Zhejiang Province" "TS Type Test Certification."; "IS09001 Quality System Certification" "ISO45001 OccupationalHealth and Safety Certification" "ISO14001 Environmental Management System Certification" "CE", "ATEX ", " EAC".

2025: company has obtained the "CU-TR(EAC) Eurasian Certification "for its full range of pneumatic actuator products."ATEX EU Explosion-proof Certification ". "CE", "ATEX", "EAC".

IKNOW Trademark successfully registered in Russia.

Adhering to the philosophy of continuous innovation

IKNOW consistently sticks to concept of "innovative manufacturing, actuating the future" throughout decade of development.Getting deeper into clients' actual working conditions and through continuous technical innovation,

IKNOW has independently developed and manufactured RT series rack and pinion pneumatic actuators, ING series scotch yoke pneumatic actuator, and ZH linear pneumatic actuator. IKNOW takes advantage of expertise to provide customized, comprehensive, and one-stop process control solutions for clients. Our company's product quality has been positively commented by end users in industries such as construction, biomedicine, fire protection, drainage, petrochemicals, metallurgy, paper-making, and power plant, etc.

Mission

Making every valve controlled all over the world;
making every valve controlled more precisely.

Vision

To build IKNOW into a leading world-renowned actuator brand

Values

Client-based, customized solutions

Innovation-driven, excellent actuation

CE Certificate

Qualification Certificates

爱诺执行器有限公司
浙江省专精特新中小企业

National High-tech Enterprise

Specialized, Refined, Distinctive and Innovative SMEs

EAC Certificate

EAC Certificate

EAC 012 Directive

TUV-SIL3 Certificate

TS Certificate

ISO9001 Certificate

ISO 45001 Certificate

ISO14001 Certificate

< Test Equipment

SpringTesting Machine

Pneumatic Actuator Torque Test Stand

■Pneumatic Actuator Thrust Test Stand

< Ordering Information

< Product Architecture

Indicator

Position indicator with NAMUR is convenient for mounting accessories such as Limit Switch box,Positioner and so on.

Actuator Body

According to the different requirements, the extruded aluminum alloy ASTM6005 Body can be treated with hard anodized, powder polyester painted (different colours is available such as blue, orange, yellow etc.) PTFE or Nickel plated.

Pinion

The pinion is of high-precision integral type, made of nickel-alloy steel, fully complying with the latest ISO5211.DIN3337.NAMUR standards. Custom dimensions are available; stainless steel is optional.

End Caps

Die-casting aluminum powder polyester painted in different colours, PTFE or Nickel plated.

Pistons

The twin rack pistons are made from Die-casting aluminum treated with Hard anodized or made from Cast steel with galvanization. Symmetric mounting position,long cycle life and fast operation, reversing rotation by simply inverting the pistons.

Bearings&Guides

Made from low friction,long-life compound material,to avoid the direct contact between metals. The maintenance and replacement are easy and convenient.

Travel Adjustment

The two independent external travel stop adjustment bolts can adjust ± 5°at both open and close directions easily and precisely.

High Performance Springs

Preloaded coating springs are made from the high quality material for resistant to corrosion and longer service life, which can be demounted safely and conveniently to satisfy different requirements of torque by changing quantity of springs.

O-rings

NBR rubber O-rings provide trouble-free operation at standard temperature ranges.For high and low temperature applications Viton or Silicone.

Parts and Materials

Unit: N·m

Double-Acting Actuator

Air to Port A forces the pistons outwards, causing the pinion to turn counterclockwise while the air is being exhausted from Port B. Air to Port B forces the pistons inwards, causing the pinion to turn clockwise while the air is being exhausted from Port A.

Air to Port A forces the pistons outwards, causing the pinion to turn clockwise while the air is being exhausted from Port B. Air to Port B forces the pistons inwards, causing the pinion to turn counterclockwise while the air is being exhausted from Port A.

Sizing: Double Acting Actuator
The suggested safety factor for double acting actuators under
normal working conditions is 20%-30%.
Example:
©The torque needed by valve=100N·m
©The torque considered safety factor(1+30%)=130N·m
©Air Supply=5Bar
According to the above table, we can choose the minimum model is RT 160DA.

< Single-Acting Actuator

Air to port A forces the pistons outwards, causing the springs to compress The pinion turns counterclockwise while air is being exhausted from port B.

Loss of air pressure on port A, the stored energy in the springs forces the pistons inwards. The pinion turns clockwise while air is being exhausted fromport A.

Air to port B forces the pistons outwards, causing the springs to compress The pinion turns counterclockwise while air is being exhausted from port B.

Loss of air pressure on port A, the stored energy in the springs forces the pistons inwards. The pinion turns clockwise while air is being exhausted from port A.

Output Torque of Spring Return Actuators

Sizing:Spring Return Actuators

The suggested safety factor for spring return actuator under normal
working conditions is 30-50%
Example:
The torque needed by valve=80N·m
The torque consider safety factor(1+30%)=104 N·m
Air Supply=5BarAccording to the table of spring return actuators' output,
we find output torque of RT435SR K7 is:
Air stroke 0°=308N·m
Air stroke 90°=247N·m
Spring stroke 90°=181 N·m
Spring stroke 0°=120N·m
All the output torque is larger than we needed

N·m

Installation Guide

Overall Dimensions

RT007DA

RT012DA

Actuator Selection based on Torque Curves

In the selection process of actuators, if we can understand the torque required for valve selection and operation, we can choose actuators more economically and reasonably.

Single-acting Actuator Spring Mounting Forms

5 Springs

6 Springs

9 Springs

10 Springs

7 Springs

8 Springs

11 Springs

12 Springs

Weight Table (Net Weight)

Air Consumption

120°/135°/180° Double-Acting Actuator:

In order to meet the requirements of different valves and mechanical automation equipment, we can customize pneumatic actuators with different travel angles (120°, 135°, 180°) according to customer requirements.

Output Torque

For the output torque of double-acting actuators, please refer to the torque chart for 90° actuators.

120°, 135°, 180° Double acting actuatorsize chart

3-Position Pneumatic Actuator

Three-Position pneumatic actuator provides three operating positions: 0°, 45°,90°or 0°,90°,180°. The intermediate position is achieved by mechanical stops generated by 2 auxiliary pistons. The intermediate position is adjustable. For example, a 90°actuator allow the intermediate position to be adjusted to 20°, 30°, 50°, 70°etc.

Output Torque

For the output torque of double-acting actuators, please refer to the torque chart for 90°actuators.

Length of DA-3P(90°)

Working Principle of 3-Position Actuators

Working Principle of 3-Position Pneumatic Actuators

Two independent external adjustment bolts enable±5° adjustment at both the 0 ^ { \circ } and 9 0 ^ { \circ }

Operating Conditions

1. Operating Media:

Dry or lubricated air, or the non-corrosive gases The maximum particle diameter must less than 30 vm

2. Air Supply Pressure

The minimum supply pressure is 2.5 Bar, The maximum supply pressure is 8 Bar

3. Operating Temperature

Standard: - 2 0 ^ { \circ } C ~ + 8 0 ^ { \circ } C

Low Temperature: 3 5 ^ { \circ } C ~ + 8 0 ^ { \circ } C ^ { \circ } C

High Temperature: - 1 5 ^ { \circ } ( \mathsf { C } ~ + 1 5 0 ^ { \circ } \mathsf { C }

4. Travel Adjustment

Have adjustment range of ±5° for the rotation at 0 ^ { \circ } and 9 0 ^ { \circ }

5. Application

Either indoor or outdoor

Ordering Information

RT series valve pneumatic actuator is a complex automatic control device, which consists of pneumatic actuator, valve and various pneumatic components and accessories. Users can carefully select each component according to the needs of on-site control and clearly indicate it in the technical contract.

Pneumatic Actuators

Air source pressure, action mode, cylinder thrust, full travel time, connecting bracket and manual mechanism;

Valves

Specification model, nominal pressure, nominal size, valve thrust, flow medium, actual working pressure, use temperature, installation position;

Filter Pressure Reducing Valve

Brand and model, oil mist, automatic drainage, operating temperature, valve body and pressure gauge material, air source interface size;

Solenoid Valve

Brand and model, double-acting or single-acting, single or double electric control, two-position three-way or two-position five-way, voltage, power, protection level, explosion-proof level, electrical interface size, air source interface size, operating temperature, manual operation;

Travel Switch

Brand and model, mechanical or proximity, DPDT or SPDT or P&F, protection level, explosion-proof level, electrical interface size, accessory material;

Other Annexes

Pneumatic control valve, one-way valve, quick discharge valve, speed regulating valve, lock valve, speed increasing amplifier, etc.;

Special Requirements

If you have special requirements,such as material, paint, interface size, installationspace, etc., please contact IKNOW sales representative in time;

Locator

Brand and model, double-acting or single-acting, protection level, explosion-proof level, input signal, output signal, feedback signal, feedback bracket, HART module, LED display, use temperature, accessory material;

Installation and Operation

The pneumatic actuator undergoes necessary performance tests and calibration according to order requirements before leaving the factory, making it ready for direct installation and use. Its bottom mounting hole design complies with ISO 5211 standard, facilitating straightforward bracket installation.

Upon unpacking, inspect the product for any unexpected damage and ensure all accompanying parts are complete. Particularly for products stored over extended periods, comprehensive maintenance is necessary before installation and use.

Prior to installing the actuator with valves, verify the actuator's model specifications to ensure its thrust requirements align with those needed by the valves.

Before installation, check the compatibility of the actuator's bracket flange dimensions with the valve and ensure sufficient installation space.

If using pneumatic/manual switching mechanisms, verify postinstallation that the switching mechanism operates as required to prevent inadvertent operation. For valves equipped with manual operating mechanisms, during spring return (valve closure) or pneumatic opening/closing processes, avoid any "pneumaticmanual" switching operations at any valve position.

If using pneumatic/manual switching mechanisms, before manual operation, ensure residual air within the cylinder is purged (only if residual air is present) through the solenoid valve (or control component). Confirm correct manual operation before conducting pneumatic operational trial checks.

©When using the handwheel for operation with pneumatic/manual switching mechanisms, take care not to exert excessive force and strictly prohibit the use of any external tools directly on the manual mechanism to prevent equipment damage or personal injury.

Maintenance and Care

To ensure the proper functioning of the entire pneumatic instrument control system, pneumatic actuators should undergo monthly inspections and annual comprehensive maintenance. Additionally, keep the exterior of actuators clean, free from dust and oil contamination.

Ensure excellent sealing performance of actuators by maintaining intact, secure, and tight sealing surfaces and points.

Regularly inspect all parts of cylinders and air piping systems to ensure no air leakage at pipe connections and maintain air source pressure within normal range. Ensure air pipes are free from dents and remain unobstructed.

During maintenance, carefully inspect and clean cylinder sleeves and pistons. Replace damaged or aged O-ring seals immediately. Apply lubricating oil evenly on cylinder walls and seal groove before cautiously inserting the piston to prevent damage to O-ring seals.

For complete pneumatic valves equipped with pneumatic/manual switching devices, ensure smooth manual operation and welllubricated manual operating mechanisms. Lubricate bearings and drive parts on the switching shaft every three months or semiannually to maintain normal operation.

Maintain air source pressure within the range of 0.3-0.8 MPa (G) and ensure purified air through dust removal and dehydration treatments. Regularly drain and purge air filters associated with actuators to prevent impurities from entering solenoid valves and affecting their normal operation.

Ensure electrical signal wires are free from faults such as missing phases, short circuits, or open circuits. Securely connect protective housing joints to prevent water and dust corrosion.

Ensure proper installation of stuffing box covers without tilting to prevent friction on valve stems leading to jamming, thereby ensuring actuators operate flexibly and normally.

Common Faults and Remedies

After-sales service

Pre-sales service

a. Professional Consultation and Answers: We provide deep analysis of customer needs, offering detailed and professional answers to questions regarding products, technology, and applications.

b. Precise Selection and Quotation: Based on specific customer requirements, we provide precise matching and competitive pricing for pneumatic actuators and accessories.

c.Comprehensive Technical Support: We provide comprehensivetechnical support, including outline drawings, pneumatic (electrical) circuit diagrams, and instruction manuals, as well as value-added services such as conferences and training.

Sales Services

a. Efficient Order Processing: We respond quickly and process customer orders, ensuring pneumatic actuators are delivered to customers on time, in good quality and correct quantity.

b. Installation and Commissioning Services: We provide installation and commissioning services for pneumatic actuators and accessories. We ensure the pneumatic circuitry fully meets the customer's on-site usage requirements.

c. One-Stop Solution:We provide customers with a complete service from selection, installation, and commissioning of pneumatic actuators and valves, simplifying the purchasing process and reducing the difficulty of selection for customers.

After-sales Service

a. Long-term Quality Guarantee:We provide customers with a 12-monthquality guarantee, ensuring the stability and reliability of product quality.

b. Rapid Response:We promise to respond quickly within12 hours of receiving a customer service request and provide an effective solution, reducing customer waiting time.

c. Continuous Technical Support:We provide customers with product usage training and technical guidance to ensure they fully master the operation procedures of pneumatic lubrication gates, optimizing the customer experience.

Fireproof shield can be installed on actuators.

Flexible fireproof shield: A professional product for fire protection of industrial equipment, capable of withstanding temperatures up to 1093°C.

Utilizing a composite insulation structure of ceramic fiber and silicone rubber, it offers flexible installation and is also used in petrochemical and other industries for similar applications.

Sincerely Recruit National Agents

IKNOW ACTUATOR CO.,LTD

ADD: No. 2367, Binhai 1lth Road, Wenzhou Bay New Area, Zhejiang Province

TEL:+86-577-8692 7222 8582 5555

E-mail: iknow@iknow-control.com

cn.iknow-control.com400-111-8080