Tel：
E-Mail：
English
Chinese
한국어
Español
News
Understanding IP Ratings
| IP Rating | Protection Level | Typical Applications |
|---|---|---|
| IP65 | Dust-tight; water jets | Indoor, occasional washdown |
| IP66 | Dust-tight; powerful water jets | Outdoor, regular washdown |
| IP67 | Dust-tight; temporary immersion | Outdoor, heavy rain, hose-down |
| IP68 | Dust-tight; continuous immersion | Submersible, valve pits, flood-prone |
| IP69K | Dust-tight; high-pressure washdown | Food processing, sanitation zones |
Why IP Rating Matters
| Environmental Threat | Consequence Without Protection | IP Rating Required |
|---|---|---|
| Dust and particulates | Premature wear, jamming, overheating | IP6X (dust-tight) |
| Rain and splashing | Corrosion, electrical shorts | IP65–IP66 |
| Temporary flooding | Complete actuator failure | IP67 |
| Continuous submersion | Permanent damage | IP68 |
Actuator Types for Harsh Environments
1. IP67/IP68 Pneumatic Actuators
Best for: Outdoor installations, valve pits, flood-prone areas, washdown environments.
| Feature | Benefit |
|---|---|
| Sealed housing | Prevents moisture and dust ingress |
| Stainless steel or heavy-coated aluminum | Corrosion resistance |
| NAMUR ports | Standardized accessory mounting |
| Spring-return options | Fail-safe in wet conditions |
Typical Applications:
Pipeline valve stations
Water treatment facilities
Offshore platforms
Underground valve vaults
2. IP69K Stainless Steel Actuators
Best for: Food processing, pharmaceutical, and other sanitary applications requiring high-pressure washdown.
| Feature | Benefit |
|---|---|
| 316L stainless steel | Corrosion resistance, smooth surface |
| IP69K rated | Withstands high-pressure, high-temperature cleaning |
| Smooth, crevice-free design | Prevents bacterial harborage |
| FDA-compliant seals | Suitable for sanitary environments |
Typical Applications:
Food and beverage processing
Pharmaceutical manufacturing
Dairy facilities
Breweries
3. IP68 Electric Actuators
Best for: Submersible applications, remote locations, and environments with continuous moisture exposure.
| Feature | Benefit |
|---|---|
| Fully sealed enclosure | Continuous immersion capability |
| Potting or sealed electronics | Protects sensitive components |
| Corrosion-resistant materials | Long service life in wet conditions |
| Integrated cables | Eliminates entry points |
Typical Applications:
Submerged valve installations
Water treatment basins
Irrigation systems
Flood-prone areas
Key Selection Criteria
1. Environment Assessment
| Environmental Factor | Consideration |
|---|---|
| Indoor/outdoor | Outdoor requires higher IP rating |
| Humidity/condensation | Sealed actuators prevent moisture ingress |
| Washdown frequency | Daily washdown requires IP69K |
| Submersion risk | IP68 for continuous or frequent submersion |
| Dust concentration | IP6X for dusty environments |
2. Material Selection
| Material | Corrosion Resistance | Best For |
|---|---|---|
| 316L stainless steel | Excellent | Marine, chemical, sanitary, outdoor |
| 304 stainless steel | Good | Moderate corrosive environments |
| Aluminum with epoxy coating | Moderate | Indoor, occasional outdoor |
| Aluminum with polyester coating | Moderate | General industrial |
3. Seal Integrity
Seals are the primary defense against ingress. Key considerations:
| Seal Type | Characteristics |
|---|---|
| O-rings | Standard; check material compatibility |
| Double seals | Redundant protection for critical applications |
| Encapsulated seals | Enhanced protection for extreme environments |
| Cable glands | Ensure proper sealing at electrical entries |
Common Harsh Environment Applications
Water & Wastewater
| Application | Challenge | Recommended Actuator |
|---|---|---|
| Pump stations | Humidity, occasional flooding | IP68 pneumatic or electric |
| Clarifiers | Moisture, chemical exposure | IP67 stainless steel |
| Valve pits | Submersion risk | IP68 with corrosion-resistant coating |
| Chlorination | Chemical corrosion | 316L stainless steel, IP67 |
Food & Beverage
| Application | Challenge | Recommended Actuator |
|---|---|---|
| Processing lines | Daily high-pressure washdown | IP69K stainless steel |
| Filling areas | Product spillage, cleaning | IP67/IP69K stainless steel |
| Outdoor storage | Weather exposure | IP67 with corrosion protection |
Oil & Gas
| Application | Challenge | Recommended Actuator |
|---|---|---|
| Offshore platforms | Saltwater, humidity | IP67/IP68 stainless steel |
| Pipeline stations | Weather, dust | IP66–IP67 with heavy coating |
| Wellheads | Extreme conditions | IP68 with hazardous area certification |
Mining & Aggregates
| Application | Challenge | Recommended Actuator |
|---|---|---|
| Dusty environments | Abrasive dust | IP6X dust-tight, heavy-duty seals |
| Wet processing | Water, slurry | IP67/IP68 with corrosion protection |
IP Rating Comparison
| IP Rating | Dust Protection | Water Protection | Suitable For |
|---|---|---|---|
| IP65 | Dust-tight | Water jets | Indoor, occasional washdown |
| IP66 | Dust-tight | Powerful water jets | Outdoor, regular washdown |
| IP67 | Dust-tight | Temporary immersion (1 m, 30 min) | Flood-prone, heavy rain |
| IP68 | Dust-tight | Continuous immersion (specified depth) | Submersible, valve pits |
Installation Tips for Harsh Environments
| Tip | Benefit |
|---|---|
| Use proper cable glands | Maintains IP rating at entry points |
| Avoid horizontal mounting | Prevents water pooling on seals (where applicable) |
| Apply dielectric grease | Protects electrical connections from moisture |
| Inspect seals periodically | Detects wear before failure |
| Use stainless steel hardware | Prevents corrosion of mounting bolts |
Common Mistakes to Avoid
| Mistake | Consequence |
|---|---|
| Incorrect IP rating for application | Premature failure, water ingress |
| Coated aluminum in washdown areas | Coating failure, corrosion |
| Improper cable sealing | Moisture entry through electrical ports |
| Missing seal inspections | Undetected seal wear leads to failure |
| Standard lubricants in wet environments | Washout, corrosion |
Selection Checklist
| Factor | Consideration | ✓ |
|---|---|---|
| IP rating required | IP65, IP66, IP67, IP68, or IP69K | ☐ |
| Environmental assessment | Dust, moisture, chemicals, washdown | ☐ |
| Housing material | Stainless steel or coated aluminum | ☐ |
| Corrosion resistance | Matched to environment | ☐ |
| Seal material | Compatible with chemicals, temperature | ☐ |
| Cable entry | Proper glands, sealing method | ☐ |
| Mounting orientation | Avoid water pooling | ☐ |
| Hazardous area | ATEX/IECEx if required | ☐ |
Final Thoughts
Water and dust are among the leading causes of actuator failure in industrial environments. Selecting actuators with appropriate IP ratings — and matching materials to environmental conditions — is essential for reliable operation and long service life.
Whether you need IP67 pneumatic actuators for valve pits, IP68 electric actuators for submersible applications, or IP69K stainless steel actuators for sanitary washdown environments, investing in proper ingress protection pays dividends through reduced downtime and extended equipment life.
At Kinko, we offer a comprehensive range of waterproof and dustproof actuators designed for harsh environments — including IP67/IP68 pneumatic and electric actuators, IP69K stainless steel options for sanitary applications, and corrosion-resistant materials for demanding conditions.
For assistance with actuator selection for harsh environments, feel free to reach out.
Ivan (Mobile:+86-18968769287)
WhatsApp：+86-13579991606
Wechat:+86-18968769287
Website： www.kinko-flow.com
ZHEJIANG KINKO FLUID EQUIPMENT CO.,LTD
info@kinko-flow.com
+86-133 5611 9006
