Types of Spiral Hose and Their Applications
Spiral hose is not selected based on its color alone. Suction or discharge duty, actual internal diameter, operating condition, fluid and connection size should be evaluated together.
Explore the relevant options: Compare spiral hose models · Yellow, Green and Red Spiral Hoses: Differences and Applications
Brief summary of spiral hose types
Spiral hoses are basically divided according to suction, discharge or specific plumbing task. The suction hose must maintain its form under negative pressure on the suction side of the pump; The discharge hose focuses on carrying the fluid in the outlet line.
The right choice cannot be made just by looking at the product name, color or photo. The fluid, line length, pump and connection size, actual internal diameter, bending form and the manufacturer's current technical data must be checked together.
Suction, Discharge, Clear and Opaque Spiral Hoses
Products with similar appearance may be designed for different tasks. For this reason, before ordering, it should be clearly stated whether the hose will be used in suction, discharge or a fixed installation.
The table below shows the general selection logic. The exact suitability and operating limits must be verified from the current technical data of the product to be ordered.
| Hose type | General purpose | Information to be verified |
|---|---|---|
| Suction spiral hose | Pump suction and vacuum lines | Inside diameter, vacuum condition, bend and fitting |
| Discharge spiral hose | Pump output and fluid transfer | Working pressure, connection and temperature |
| Transparent spiral hose | Applications where flow monitoring is desired | Fluid compatibility and operating condition |
| Opaque spiral hose | Applications where light transmission is not desired | Product class and technical data |
| Heavy duty spiral hose | More difficult mechanical and operating conditions | Weight, structure, bending, vacuum or pressure |
| Jacuzzi hose | Pool and jacuzzi installation connections | Actual connection size and ambient condition |
| Vacuum truck suction hose | Challenging tasks such as dirty fluid suction | Vacuum, wear, diameter and fluid compatibility |
Difference between suction hose and discharge hose
When the suction hose operates on the inlet side of the pump, a pressure lower than atmospheric pressure may occur inside the hose. The hose should not flatten and interrupt the flow under this condition.
The discharge hose runs at the outlet of the pump or in the transfer line. Working pressure and connection security come to the fore here. A hose should only be considered suitable for both tasks if it is clearly stated in the current technical data.
Standard series or heavy duty series?
The names standard and heavy duty alone do not explain all the technical differences. Two products of the same nominal size; They may differ in terms of weight, wall structure, spiral reinforcement, bending behavior and operating condition.
Short-term clean water transfer and continuous suction, muddy water, moving machine connection or sewage truck application should not be included in the same selection class.
Selection of spiral hose according to area of use
Absorbent product suitable for suction line in agriculture and irrigation pump; The discharge product whose working condition has been verified for the output line is evaluated. In pool and jacuzzi installations, the connection size and the environment used are also checked.
In industrial, dust or chip transfer, the corrosiveness of the material transported and the safety conditions of the application should also be evaluated.
| Application | First thing to look at | Common mistake |
|---|---|---|
| Water pump suction | Vacuum condition, inner diameter and sealing | Just look at the name of the pump nozzle |
| Pump output | Working pressure, line length and fitting | Assuming every suction hose is suitable for discharge |
| Agriculture and irrigation | Flow requirement, route and curve | Ignoring long line losses |
| Pool and jacuzzi | Connection and installation compatibility | Not verifying nominal size with actual connection |
| Sewage truck | Vacuum, wear, fluid and working order | Choosing only based on diameter and price |
How to check diameter, sleeve and clamp compatibility?
When ordering spiral hose, it should be clearly stated whether inches or millimeters refer to the inner diameter or outer diameter. The outer diameter of the hose, its wall structure and the clamp to be used also affect the installation.
The hose that is forcibly put on the fitting or remains loose may catch air in the suction line. The size of the fitting, the hose size chart and the installation method must be verified together.
What information should be looked for in the technical sheet?
Inner and outer diameter, working pressure or vacuum condition, bending radius, temperature range, product weight and roll length are useful data in comparison.
Suitability for food, chemical, high temperature or special industrial application should not be assumed based on the generic product name. The exact name and operating condition of the fluid must be notified to the manufacturer in writing.
What information should be given when requesting a spiral hose quote?
Area of use, suction or discharge duty, fluid, pump size, desired internal diameter, total length, roll preference, whether the line is mobile or fixed and the delivery city should be written together.
Product family, unit of measurement, roll length, quantity, scope of fittings and stock information must be confirmed separately in the offer.
Frequently Asked Questions
What are the types of spiral hoses?
Spiral hoses can be offered in classes such as suction, discharge, transparent, opaque, standard and heavy duty. There are also families named for specific applications, such as jacuzzis and vacuum cleaners. The exact selection must be made with knowledge of internal diameter, operating condition, fluid and connection.
What is the difference between suction hose and discharge hose?
The suction hose focuses on maintaining its form under the negative pressure created at the inlet of the pump. The discharge hose runs on the pump outlet or transfer line. A product should only be considered suitable for both tasks if its technical data is verified.
What is the use of PVC spiral hose?
PVC spiral hose can be used in water suction, fluid transfer, pool or jacuzzi installations and some industrial applications, depending on its product class. The expression PVC and spiral reinforcement alone do not indicate suitability for all operating conditions.
Where is the transparent spiral hose used?
It may be preferred in applications where visual monitoring of the flow or situation within the hose is useful. Transparency alone does not prove food, chemical, vacuum or pressure suitability.
What is the difference between opaque spiral hose and transparent spiral hose?
The main visible difference is light transmittance. It should not be assumed that technical performance is due to color or transparency alone. Product structure, size and working condition should also be compared.
Should you buy standard spiral hose or heavy duty spiral hose?
Duration of use, mechanical stress, vacuum or pressure, fluid and field route should be evaluated. Heavy duty selection should not be made based on the product name alone.
Which spiral hose is attached to the suction of the water pump?
On the suction side of the pump, an absorbent spiral hose with the correct inner diameter and suitable for the vacuum condition to be formed is evaluated. The sealing of the fitting and clamp is as important as the hose.
Is a suction hose used at the pump outlet?
Some products may be suitable for more than one task, but this is not obvious from the appearance. The operating condition at the pump outlet must be compared with the current technical data of the product.
What to look for when choosing a vacuum truck suction hose?
Vacuum condition, transported fluid, wear, inner diameter, line length, bending and connection method are evaluated together. Large diameter alone is not a sufficient selection criterion.
Is the jacuzzi hose the same as the normal spiral hose?
Jacuzzi hose may be a separate product family depending on its connection and installation task. It should not be assumed that another spiral hose will do the same job; The connection and working condition should be checked.
How to choose spiral hose diameter?
Pump connection, required flow rate, line length, elevation, fluid and suction or discharge duty are evaluated together. Technical calculation and current product table should be used in critical projects.
Is the spiral hose size inner diameter or outer diameter?
Market nomenclature often relates to internal diameter, but assumptions should not be made for all products. It should be clearly stated in the order whether the measurement is inner diameter or outer diameter.
Why does the spiral suction hose collapse or flatten?
Product not complying with the vacuum condition, incorrect diameter, excessive bending, temperature, mechanical damage or clogged suction line may contribute to this. The root cause must first be determined.
Does yellow, green or red spiral hose color indicate quality?
Color can help distinguish product families, but alone it is not an indicator of quality, vacuum, pressure or lifespan. The order must be placed based on product class and technical data.
What information should be written when ordering spiral hose?
Suction or discharge duty, fluid, pump and fitting size, desired internal diameter, total length, usage type, ambient condition and delivery city should be written together.
Let's determine the appropriate product and size together
Write the diameter, length, area of use and delivery city; Request a quote with up-to-date product information.