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Reliable Medical Solenoid Actuator | AS 1325 B for Fluid Control & Instrument Automation

The AS 1325 B Tubular Linear Push-Pull Solenoid is a highly specialized device that has been designed and developed with a focus on applications within the medical device and healthcare sector. The device is a medical-grade product that is made from materials and designed in a manner that is acceptable and safe for use in a clean room environment. The device is a reliable push-pull device that provides linear motion, and it is highly essential for applications that include medical diagnostics, laboratory automation, fluid control applications, and surgical device applications. The device operates at a speed of 24V DC and is highly reliable and efficient for use with control systems in a medical environment. The device is highly reliable and is designed with a focus on applications that require precision and biocompatibility.

Product Video

Product Specification 

Brand AstSolenod Model Number AS 1325 B
Rated Voltage (V) DC 12V or DC 24V Rated Power(W)  5–7 W
Work Model Tubular Push and PUll Type Holding Force (N) 2 N
Stroke(mm) 3-5 MM Reset Time(s) 1 S
Service Life 300 Thousand Times Certification CE,ROHS,ISO9001,
Material Carbon Steel Housing with Zinc Plated Coating Lead Wire Length(mm) 200
Install Style Adjustable Screw Tolerance of Dimension  +/-  0.1 MM
Water-proof  None Insulation Class  F   155 Cel. Degree
Hi-Pot Test AC 600V 50/60Hz 2s Non-excitation Holding Force 0
Working Temperature -10°C-100°C Duty Cycle 1-100%
Thread Depth(mm)  / Payment Term TT, or LC At Sight
Sample Order Yes Warranty 1 Year
MOQ 500 pcs Supply Ability 5000 pcs per Week
Delivery Time 30 Days Port of Loading shenzhen

Product Description

Operating Principle
AS 1325 B functions on basic electromagnetic principles optimized for a medical setting:

Electromagnetic Act

Upon the application of 24V DC current to the solenoid’s insulated copper wire, a magnetic field is created, which attracts the precision-machined plunger (also known as the armature) into the center of the solenoid, opposed by the spring constant’s force.

Push-Pull Mechan

The product provides bi-directional actuation functionality. In its normal state, the plunger is typically spring extended. When power is applied:

Pull Action: The plunger retreats into the coil housing

Push Action: The configured attachment enables a force push when de-energized (spring return) or dual coils in push applications

Medical-Specific Design Features:

Clean Room Assembly: Made in clean rooms to reduce the possibility of contamination.

Low Particulate Materials
Non-Shedding Materials & Sealed

Biocompatible Options: Biocompatible materials that are compatible with medical standards for

Predictable Force-Stroke Profile
Performance must be consistent in order to deliver the right dose in medical procedures

EMI Reduced Design: Suppresses any interference with sensitive medical devices that may result from the

Applications

Diagnostic & Imaging Equipment:

Positioning of sample trays in automated analyzers

Handling of Cassettes in Immunoassay

The Gate Mechanisms in Flow Cytometers

Component Positioning in MRI/CT Peripherals

Component Position

Surgical & Treatment Devices:

Actuation in robotic surgical devices

Control of the valve in the insufflation system

Positioning in laser surgery equipment
Positioning in

Control of Mechanism in Dental Handpieces
The Laboratory Automation:

Fluid handling: Valve actuation

Microplate lid openers/c

Pipette tip ejection mechanisms

Reagent bottle cap handlers

Patient Care Devices:

Infusion pumps and their mechanisms

Ventilator valve control

Components of dialysis machines

Respiratory therapy equipment

Monitoring and Diagnostic Tools:

Valves for blood pressure cuffs

Handling of Specimen Containers
Positioning mechanisms of sensors

Disposal component ejection systems

FAQ

Q1: What certifications/standards does AS 1325 B have for medical applications?

A: Our AS 1325 B series is intended for medical device certification. Components are generally manufactured following ISO 13485 quality systems, with material selection for biocompatibility according to ISO 10993. These certifications are subject to validation with your device manufacturer, for which we supply your customers with material documentation for your FDA 510(k) or CE Marking.

Q2: Is the solenoid compatible with sterilization processes?

A: Standard models are not autoclavable. But special models with high-temperature coils and appropriate materials are available for EtO (Ethylene Oxide) sterilization or gamma radiation. For steam sterilization (autoclaving), external protection or removable actuator tips are advised. For details on the suitability of a particular product for sterilization processes, one should look into the data sheet of that particular product.

Q3: Is this solenoid suitable for fluid paths or wet applications?

A: AS 1325 B series actuators are usually rated IP42 or better, resistant to dust and dripping water. For direct fluid contact or wash-down applications (such as laboratory analyzers), IP65/IP67 rated models with protected shafts and fluid-tight housing are offered. The plunger shaft can be connected to fluid-sealed membranes or bellows, if needed, for fluid isolation.

Q4: What is the expected service life in medical applications?

A: Under rated conditions in a biomedical device, AS 1325 B is expected to last for 10+ million cycles. The factors that have a significant influence on the lifespan include operating temperature, loading, and duty cycle. Lower duty cycles may be involved in biomedical applications than in industrial applications.

Q5: How do we reduce electrical interference for sensitive medical devices?

A: We propose the following approaches:

Shielded Cabling: Use twisted pair or shielded cable for solenoid connections

RC Snubber Circuits: These are used to suppress electrical noise and are applied across the coil.

Physical Separation: Solenoid wiring and signal lines must be kept physically separated.

Ferrite Beads: Add to power leads near solenoid Synchronized switching: Coordination with measurement cycles For EMI/EMC integration practices related to medical systems, refer to our application notes. Q6: Are customized configurations available for particular medical usages? A: Yes. We have a number of options for customization, including: Special Voltages: 12V DC, 5V DC, or dual voltage systems Force-Stroke Optimization: Designed for specific force needs at specific points Connector Types: Medical-grade connectors (LEMO, Fisher, etc.) Mounting Configurations: Custom brackets/flanges Material Alterations: Anodizing, plating, or special coatings Lead Length & Termination: Tailored to Your Assembly Process There are also minimum order quantities required for custom designs.

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