Flexible hoses are essential components in modern plumbing systems. They connect faucets, valves, and appliances while allowing easy installation and movement.

However, not all hoses are designed to handle high-pressure water systems. Choosing the wrong hose can result in leaks, bursts, and expensive repairs.

This guide explains the five key factors professionals should evaluate when selecting a flexible hose.


1. Pressure Rating

The first thing to check is the working pressure rating.

Typical household water pressure ranges between 40 and 80 PSI(3bar-6bar), but pressure spikes can occur.

For safety and reliability, professionals usually recommend hoses rated for at least 150 PSI (10 bar).

A higher pressure rating ensures the hose can handle sudden surges without failure.


2. Inner Tube Material

The inner tube carries the water and must resist heat and wear.

Common materials include:

EPDM rubber – excellent heat resistance and durability

PVC – cost-effective but less heat resistant

PTFE – chemical and temperature resistant


For most kitchen and bathroom applications, EPDM is the preferred material.


3. Stainless Steel Braiding

The outer braid protects the hose from pressure, abrasion, and bending stress.

High-quality hoses typically use:


304 stainless steel braid

316 stainless steel braid for more corrosive environments


Stronger braiding significantly improves hose lifespan and safety.


4. Correct Fittings

Flexible hoses are only as reliable as their fittings.

Common materials include：

Brass

Stainless steel


Ensure the fittings match the correct thread type and diameter to prevent leaks and installation issues.


5. Safety Certifications

For potable water systems, hoses should meet recognized safety standards such as:


NSF certification(for America Market)

ACS/WRAS/DVGW(European market)

Plumbing compliance standards


Certified hoses ensure water safety and product reliability.


Conclusion

Choosing the right flexible hose involves more than selecting the correct length. Pressure rating, materials, braid quality, and fittings all play critical roles in long-term performance.

For manufacturers, distributors, and project contractors, investing in high-quality hoses reduces maintenance costs and improves system reliability.

If you are looking for flexible hoses, shower hose, PVC washing machine hose, brass fittings, or stainless steel connections for professional applications, feel free to contact our team for product specifications and OEM solutions.


Lily Chen

Ningbo Jinhong Sanitary Ware Co.ltd