1. What does an IP protection level mean?
IP (Ingress Protection) protection level is the dustproof and waterproof capability classification of electrical equipment defined by the international standard IEC 60529. It consists of “IP” followed by two digits: the first digit represents the dustproof level (0-6), and the second digit represents the waterproof level (0-9K). The higher the number, the stronger the protection.
2. What does the first digit (dust protection) mean?
- IP0X: No protection
- IP1X: Protection against solid objects greater than 50mm (such as the back of the hand)
- IP2X: Protection against solid objects larger than 12.5mm (such as fingers)
- IP3X: Protection against solid objects larger than 2.5mm (such as tools)
- IP4X: Protection against solid objects larger than 1mm (such as thin wires)
- IP5X: Dustproof – cannot completely prevent dust from entering, but dust does not affect the normal operation of the device
- IP6X: Completely dustproof – no dust can enter
3. What does the second number (waterproof) mean?
- IPX0: No protection
- IPX1: Protection against vertical dripping water
- IPX2: Protection against dripping water at an angle of 15°
- IPX3: Protection against rain (spray within 60° range)
- IPX4: Protection against splashing water (any direction)
- IPX5: Protection against water spray (6.3mm nozzle)
- IPX6: Protection against strong water spray (12.5mm nozzle)
- IPX7: Protection against short-term water immersion (1 meter water depth, 30 minutes)
- IPX8: Protection against sustained water immersion (conditions specified by manufacturer, usually better than IPX7)
- IPX9K: Protection against high temperature and high pressure water spray (suitable for frequent cleaning scenarios)
4. What are the common IP level application scenarios?
- IP40: Ordinary indoor appliances (TV, router)
- IP54: splash-proof equipment (kitchen appliances, outdoor lighting)
- IP65: dust-proof and water-spray-proof (industrial control cabinet, outdoor monitoring)
- IP66: Protection against strong water spray (marine equipment, outdoor cabinets)
- IP67: Can be soaked for a short period of time (outdoor portable devices, smart watches)
- IP68: Long-term immersion (diving equipment, underwater cameras)
5. What is the difference between IPX7 and IPX8?
IPX7: Fixed conditions (immersed in 1 meter of water for 30 minutes). IPX8: The conditions are more stringent, but determined by the manufacturer (such as 5 meters of water depth for 2 hours). Note: IPX8 is not necessarily compatible with levels below IPX7 and needs to be marked separately.
6. Is the higher the protection level, the better?
no. Higher protection usually means thicker seals and heat dissipation losses, which also increase cost and bulk. The selection should be based on the actual use environment: IP40 is sufficient for indoor equipment; IP54 or above is required for outdoor rain protection; IP67 or above is required for possible water immersion.
7. If the product is marked IP67, can it be used underwater?
It can be soaked for a short time (within 1 meter), but it is not recommended to be used in hot water, sea water or water impact environment. And the waterproof ability of the sealing ring will decrease after aging, so it is recommended to check it regularly.
8. How to maintain IP protective equipment on a daily basis?
- Keep seals clean to avoid grit wear
- Make sure it is dry when charging or plugging or unplugging the port
- Wipe dry immediately after being immersed in water and check the water ingress
- Avoid direct impact of high temperature and high pressure water flow
9. Summary
By selecting butterfly valves and gate valves in accordance with IP protection grade specifications and performing daily sealing and maintenance, TWS’s valves have solid dustproof and waterproof performance and are suitable for various dust-wading pipeline conditions.
Post time: Jun-27-2026
