Smooth-Bore Corrugated PTFE Hose for Vacuum and Clean Fluid Handling Systems

Some applications require a hose to perform well under more than positive pressure.

Pumps, suction systems and process vessels may create negative pressure inside the fluid line.

At the same time, industries such as food, cosmetics, pharmaceutical and chemical processing may require a relatively smooth internal material path that is easier to flush and less prone to retaining product.

These two requirements can conflict.

A highly flexible fully convoluted hose provides excellent bending performance, but the corrugated internal surface may not always be ideal when product retention or cleaning is important.

The JCC-21100-PTFE smooth-bore corrugated braided hose is designed to provide a compromise between these needs.

Its structure combines:

Smooth PTFE Inner Wall + Corrugated Outer Geometry + 304 Stainless Steel Braided Reinforcement

The catalog specifically highlights:

• Negative-pressure resistance

• Easier cleaning

• Small bending radius

• Temperature capability from -70°C to +260°C

Why Negative Pressure Changes Hose Selection

Most hose discussions focus on internal positive pressure.

But suction systems create the opposite force.

When pressure inside the hose falls below ambient pressure, the surrounding atmospheric pressure attempts to compress the hose inward.

A hose that performs well under positive pressure may still deform under vacuum conditions if its structure is unsuitable.

The JCC-21100-PTFE is designed with negative-pressure resistance in mind, making it relevant to systems such as:

• Pump suction lines

• Vacuum transfer equipment

• Material recovery systems

• Vessel connections

• Process extraction lines

Smooth Inner Wall Helps Maintain a Cleaner Flow Path

The material-contact side of the hose uses a smooth PTFE inner surface.

This provides several practical advantages.

Compared with a deeply corrugated internal hose, a smooth inner wall can help reduce:

• Product retention

• Internal dead areas

• Residual material after transfer

• Cleaning difficulty

This is particularly valuable for materials that are:

• Viscous

• Expensive

• Sensitive to contamination

• Frequently changed between batches

Useful for Cleaning-Oriented Process Equipment

In food, cosmetics and pharmaceutical equipment, production often involves repeated cleaning.

A hose may need to be flushed between:

• Different products

• Different batches

• Formulation changes

• Maintenance cycles

A smoother internal path can make these cleaning operations more straightforward.

The product catalog specifically describes the hose as easy to clean, which makes this structure particularly relevant to process equipment where cleaning efficiency is important.

Corrugated Outer Geometry Maintains Flexibility

Although the inside is smooth, the outside remains corrugated.

This allows the hose to retain much of the installation flexibility associated with convoluted hose designs.

The hose can therefore combine:

• Smooth flow

• Flexible routing

• Relatively small bending radius

• Stainless steel reinforcement

This makes it useful in machines where both process cleanliness and compact installation matter.

Stainless Steel Braiding Provides Reinforcement

The outer 304 stainless steel braided layer provides additional mechanical support.

This improves the hose's ability to operate under pressure while protecting the flexible PTFE structure.

For process equipment manufacturers, this means the hose can serve applications that require more mechanical stability than an unreinforced PTFE tube.

Strong Pressure Capability in Smaller Sizes

The catalog shows substantial pressure capability in the smaller hose diameters.

For example, the 3/8-inch configuration is listed at approximately:

1,305 psi / 9 MPa working pressure

with a burst pressure of approximately:

5,220 psi / 36 MPa

The exact pressure capability changes with hose diameter.

This allows engineers to balance:

• Flow

• Pressure

• Bending radius

• Installation size

according to the actual machine.

Wide Temperature Range

The JCC-21100-PTFE series is specified for:

-70°C to +260°C

This broad range allows the hose to be considered in:

• Cold process systems

• Heated production equipment

• Chemical transfer

• Temperature-controlled fluid handling

Actual operating limits should always be evaluated together with the transferred medium and working pressure.

Particularly Suitable for Pump Suction Applications

Pump suction lines need special attention.

A hose installed upstream of a pump may experience:

• Negative pressure

• Pulsation

• Mechanical vibration

• Tight machine routing

The smooth-bore corrugated structure can provide a useful solution because it combines vacuum resistance with flexibility.

This can simplify connections between:

• Tank and pump

• Process vessel and transfer pump

• Product container and dosing system

• Filtration system and downstream equipment

Applications in Food Processing

Potential food equipment applications include:

• Ingredient transfer

• Syrup systems

• Liquid food transfer

• Filling equipment

• Process circulation

• Pump suction connections

Any required food-contact documentation should be confirmed for the exact final hose configuration.

Applications in Cosmetics

Cosmetic production frequently involves products with different viscosities.

A smooth internal PTFE surface can be useful for:

• Lotions

• Cream-related processes

• Liquid formulations

• Cosmetic ingredients

The flexible outer geometry also helps route the hose through compact mixing and filling equipment.

Pharmaceutical and Chemical Equipment

The hose can also be considered for:

• Pharmaceutical process skids

• Chemical dosing machinery

• Product transfer

• Pump connections

• Laboratory production systems

• Chemical circulation equipment

The correct selection depends on chemical compatibility, temperature, pressure and cleaning requirements.

Customization Options

Jingcheng can customize:

• Hose diameter

• Hose length

• End fittings

• Connection standards

• Assembly configuration

• OEM requirements

Customers can provide drawings, existing samples or equipment information for technical evaluation.

Information Required Before Selection

Please provide:

• Transferred material

• Working temperature

• Positive or negative pressure

• Maximum vacuum level

• Working pressure

• Required flow

• Hose length

• Inner diameter

• Cleaning method

• Connection type

• Equipment application

Conclusion

The JCC-21100-PTFE solves a specific design challenge:

how to combine a smoother material-contact surface with flexibility and reinforced hose performance.

Its smooth PTFE inner wall supports cleaner flow and easier flushing, while the corrugated outer geometry improves bending performance. The stainless steel braid adds mechanical reinforcement, and the structure is designed to resist negative pressure.

For vacuum transfer, pump suction and cleaning-oriented process equipment, this balanced structure can provide an effective alternative to both rigid smooth tubing and fully convoluted hose.