Differences Between IP67 and IP68: Why Choose IP68 for Pneumatic Actuators?
I. Core Differences Between IP67 and IP68 Protection Ratings
IP rating is defined by two digits: the first digit indicates dustproof capability and the second digit indicates waterproof performance. The higher the number, the stronger the protection. Here’s how they differ for pneumatic actuators:
| Comparison Dimension | IP67 | IP68 |
|---|---|---|
| Dustproof Performance | Fully dust-tight (Level 6 is the highest dustproof rating) | Fully dust-tight (Same as IP67, no difference) |
| Waterproof Performance | Resists temporary immersion: Can be submerged in ≤1m water depth for 30 minutes without water ingress or damage | Resists continuous immersion: Can work stably under customized water depth (usually ＞1m) for extended periods (e.g., 24 hours under 2m water, as specified by manufacturers) |
| Applicable Environments | Humid workshops, rain-exposed sites, occasional water splashing scenarios | Long-term waterlogged areas, highly corrosive high-humidity environments, underwater installations, harsh conditions with high-pressure water washing |
II. Why Choose IP68 for Pneumatic Actuators?
Pneumatic actuators are core components for valve automation, housing precision parts like pistons, springs, seals, and signal feedback elements (e.g., limit switches). IP68 protection is a critical guarantee for stable operation in harsh industrial conditions, for three key reasons:
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Adapt to Severe Industrial EnvironmentsScenarios like chemical plants, oil refineries, sewage treatment works, and mines often face long-term humidity, water immersion, and high-pressure spray cleaning. IP67 only handles short-term water exposure; prolonged use still risks water seepage, leading to internal component rust and seal failure. IP68, however, completely blocks water intrusion, preventing actuator jamming and signal malfunctions.
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Extend Equipment Service LifeMetal parts (springs, valve stems) and electronic components (positioners, sensors) inside actuators are highly sensitive to moisture. IP68 significantly reduces the risk of rust and circuit short circuits, extending the actuator’s service life by 30%–50% compared to IP67-rated alternatives.
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Meet Special Installation RequirementsSome working conditions demand underwater installation (e.g., underwater valve control) or outdoor unshielded deployment (e.g., outdoor pipe racks). IP67 cannot withstand long-term underwater pressure, while IP68 can be customized to meet continuous operation needs at different water depths, ensuring reliable performance.
III. Kinko IP68 Pneumatic Actuator: Your Reliable Choice for Harsh Conditions
When it comes to choosing a high-performance pneumatic actuator, Kinko IP68 Pneumatic Actuator stands out as the ideal solution for demanding industrial applications.
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Built with premium materials and precision engineering, it delivers consistent torque output and smooth 0°–90° quarter-turn control, perfectly matching ball valves, butterfly valves, and other quarter-turn valves.
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Its top-tier IP68 protection ensures stable operation even in the harshest environments—from heavy rain and high humidity to full water immersion. No more downtime caused by water or dust damage.
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Whether for chemical processing, oil and gas projects, or sewage treatment systems, Kinko IP68 Pneumatic Actuator guarantees durability, reliability, and long-term cost savings for your operations.
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Conclusion
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Choose IP67 if your actuator is installed in dry indoor workshops or areas with no long-term water exposure risks—it’s sufficient for basic protection needs.
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Choose IP68 (and specifically Kinko IP68 Pneumatic Actuator) for humid, waterlogged, spray-washed, or underwater environments. It’s not just a choice of protection level; it’s a guarantee of stable production and reduced maintenance costs.