Precision Pinch Valve for Medical Tubing Control

Medical Grade Pinch Valve for Fluid Regulation

Compact Pinch Valve for Medical Device Design

Reliable Medical Pinch Valve for Fluid Handling

Sterile Pinching Valve for Medical Applications

Safe Medical Pinch Valve for Sterile Transfer

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WL 0838 Medical Pinch Valve for Fluid Control

The WL0838 Medical Control Va;ve is a high-precision pinch valve designed for medical and laboratory liquid control. It ensures sterile, reliable flow management with a simple, robust design, perfect for integration into diagnostic equipment, analyzers, and fluid handling systems.

Medical Pinch Valves for Medical Control are very accurate and clean fluid controls that squeeze flexible tubing rather than touching the fluid. These are designed to work in hospitals and laboratories. They are reliable, quick to respond, and non-contaminating. Their small size makes it easy to integrate into various devices. They can work with different tubing sizes and types. This makes it very easy to develop the device. The fact that it has low maintenance needs and that the tubing is replaceable means that it has low operating costs. Medical Pinch Valves for Medical Control are very important in the world of healthcare and biomedical devices because they can be electronically controlled, are quiet, and can provide sterile environments while being very accurate.

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Compact Medical Fluid Pinch Valve Solution

Medical Pinch valves for medical control are an important part of fluid handling systems that are often found in healthcare environments where high standards of purity and accuracy are important. The pinch valve controls the fluid with the help of flexible tubing that is compressed rather than the fluid being allowed to come into contact with the internal mechanical parts of the valve. Infusion systems, dialysis machines, laboratory analysis systems, and drug dosing systems are some of the most important applications where pinch valves are often used. These valves are very important for the precise control of fluid handling systems that are often found in the most recent healthcare technology systems. These are small and require very little maintenance. The basic design of the pinch valve also makes it more reliable while also minimizing the cost of maintenance compared to other valves. As healthcare technology advances towards the use of disposable and sterile fluid handling systems, the pinch valve is also the safest and most reliable means of fluid control.

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Datasheet Of Medical Pinch Valve (Typical Key Specifications for WL0838)
Main Technical Specifications
1. Product Identification
Product Name/Model (P/n):

Medical Equipment Pinch Valve WL-0838
1. Standard Test Conditions
2.1 Temperature Range:

-20°C to +65°C

2.2 Relative Humidity:

5% to 60% RH

2.3 Rated Voltage:

DC 24V ±10%

2.4 Power Consumption:

6W (DC24V, Coil Resistance = 96Ω ±10%)

2.5 Operation Cycle (Duty Cycle):

Normally Open Solenoid Valve, ED 50%
1. Appearance Requirements
No visible damage

No cracks or deformation

No rust or corrosion

No surface contamination or stains

3.1 Hose Specifications:

Load Condition: Silicone Tube

Outer Diameter: 4.0 mm

Inner Diameter: 2.0 mm

Hardness: 40 Shore
1. Electrical Characteristics
4.1 Operating Pressure Range:

0 kPa to 100 kPa

4.2 Insulation Resistance:

DC 500V, ≥ 50 MΩ

(Between Coil and Bobbin/Frame)

4.3 Dielectric Strength (High Voltage Test):

AC 700V, 50/60Hz for 1 second

Maximum Leakage Current: 1 mA

(Between Coil and Housing)
1. Service Life
≥ 500,000 cycles

Test Condition: DC24V

Operation: 3 seconds ON + 3 seconds OFF = 1 cycle

WL 0838 Medical Pinch Valve Application

Pinch valves are often used in medical, laboratory, and pharmaceutical applications, where the management of sterile and contamination-free fluids is of utmost importance. In medical infusion therapy systems, they are used to regulate IV fluids and medication with precise on/off or proportional flow control, and they isolate the fluid from the outside world in disposable tubing. In diagnostic analyzer systems and laboratory automation, pinch valves are used to dose fluids, sample fluids, and control micro fluids, ensuring accurate and repeatable results without any cross-contamination.

Pinch valves are used in dialysis machines and blood processors to safely handle sensitive biological fluids, as the valve does not come into contact with the fluid. In pharmaceutical production, they are often used for sterile transfer, filling, and controlled dispensing of medication or vaccines. Pinch valves are used in biotechnology research systems to safely move cell culture medium and take sterile samples.

Pinch valves are used in food processing, beverage distribution, and chemical injection systems, particularly in applications where high levels of cleanliness are required. They are used for controlled sampling and reagent injection in environmental monitoring systems and water testing equipment. Pinch valves are the best choice for modern fluid control applications where safety, accuracy, and ease of maintenance are essential, and they are suitable for disposable tubing, minimize cleanup, and offer precise control.

They are the best choice for modern fluid control applications where safety, accuracy, and ease of maintenance are essential, and they are suitable for disposable tubing, minimize cleanup, and offer precise control.

WL0838 Medical Pinch Valve Advance & Disadvantage

Advantages and Disadvantages

Advantages	Disadvantages
fluid fluide path is isolContamination-Free: Theated, sterile, and disposable.	Tube Wear: The tube is a consumable part and must be replaced periodically.
No Internal Stagnation: Full-bore flow when open minimizes clogging.	Limited Pressure Rating: Compared to some rigid valve types.
Excellent Seal: Can handle slurries and liquids with particulates.	Requires External Tubing: Not a direct “port-to-port” valve; needs a tube section.
Simple Maintenance: Only the low-cost tube needs regular replacement.	Precision Dependent on Tube: Consistency of tube dimensions is critical.
Leak-Tight to Atmosphere: Failure typically closes the tube safely.	Actuation Force: Can be higher for larger tubing or high pinch pressure.

WL 0838 Medical Pinch Valve FAQ

Q1: What are the advantages in the use of Medical pinch valve compared to regular valves?

Q1: What are the advantages in the use of pinch valves compared to regular valves?

Q2. Are Medical pinch valves used for controlling biological fluids?Q2. Are pinch valves used for controlling biological fluids?

Q2. Are pinch valves used for controlling biological fluids?

Q3. Can medical pinch valve be used for disposable tubing?

Yes, they are commonly used with medical tubing that can only be used once.

Q4. What kind of actuators are commonly used with pinch valves?

The most common are solenoids and motor-driven actuators.

Q5: How often does the tubing have to be replaced?

Q6. Is it safe for medicines to use pinch valves?

Yes, they are often utilized to administer drugs and process pharmaceuticals.

How to Choose the Right Medical Pinch Valve for Medical Control Project

Choosing the best medical pinch valve for your medical control project is really important to make sure everything works well, safely, and accurately. Medical pinch valves are often used for medical fluid management, and they make sure the fluid being controlled remains completely separate from the valve. This keeps the fluid sterile and free from contamination.

Here’s a good and helpful guide to help you choose the best one for your project:

1. What your project or application requires

Before you choose a pinch valve, it’s important to know how and where it’s going to be used for your project or application.

Type of fluid

Blood, saline solution, medicines, chemicals, and other fluids and chemicals used with soft tubing.

Do not use it for caustic fluids. Certain chemicals require special tubing.

✅ Choose a pinch valve suitable for the types of tubing it’s going to be used with.

What you need for your fluid flow control

Exact control

For a dialysis or IV setup.

Just for opening and closing

For draining out trash or for cleaning out a tube.

🔍 Determine if you need to control the flow or just open and close it.

2. Inner diameter and material of your tube

The pinch valve does not come into contact with the fluid, and it’s the tube that actually controls the fluid flow.

Main points

The valve should match the inside diameter of your tube, and it could be 1mm, 3mm, 6mm, or something else.

The tube’s material, such as silicone, TPE, PVC, etc.

Silicone is flexible and safe for the body. Hence, it is often used in medical situations.

PVC: less expensive but allows more chemicals to leak out.

TPE: has great performance and flexibility.

🔹 Select a valve that is compatible with the tubing you will use.

3. Factors that affect performance

In order to ensure that the medical system will work well:
a. Speed of Opening and Closing

Faster speeds reduce dosing errors.

Good for rapid infusion or synchronizing with other pumps.

c. How long it lasts

Consider:
High life-cycle performance (e.g., more than 1 million cycles)
Tubing wear is low
🔹 A robust design minimizes maintenance costs and the cost of running the business.

4. Compatibility with electronics and controls

Medical systems often require compatibility with:
Microcontrollers
PLCs
Controllers for pumps
Ensure that the valve is compatible with your system:
✔ Operating voltage is compatible with your system (e.g., 12 V DC)
✔ Signal type is compatible with your system (e.g., analog, digital, PWM, CAN, etc.)

Choose valves that offer feedback controls if you require this. These should offer:
🔸 Position sensors
🔸 Closed-loop controls

5. Cleanliness and Sterility

This is very important for:
Blood handling
Dialysis
IV fluid deliver

Medical Pinch valves with tubing that is completely isolated from the valve are great for sterilizing:
✔ Tubing kits that can be thrown away
✔ Valve bodies that can be reused with tubing that can be sterilized

Note: Tubing kits that are already sanitized are the best.

🧠 5 Quick Comparison Checklist

Requirement	What to Check
Fluid type	Tubing + valve compatibility
Precision	Flow control capability
Size	Tubing ID & valve pinch range
Integration	Voltage & control signal
Sterility	Disposable tubing options
Life span	Rated cycle life
Force	Sufficient pinch pressure

6. Pressure from Force and Pinch

The pinch valve squeezes the tubing to control the fluid:

✔ Enough compressive force ✔ Too much force:

Makes tubing last less long

Increases the shear of fluids

✔ Not enough force: ✔ Closure not complete → Leaks

Manufacturers will tell you what standards apply for pinch force. Check that they are correct for your tubing’s durometer and diameter.

🧪 7. Testing and confirmation

Before you integrate:

✔ Test with real fluids on the bench ✔ Check for long-term cycling ✔ Check for leaks and accuracy of flow rates

It is possible that you will be required to meet medical standards, such as ISO 13485 or IEC 60601.

Choose a medical-grade pinch valve that meets:
✔ Size and type of tubing ✔ Level of exactness and speed required ✔ Electronics for control system ✔ Need for cleanliness and rules