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Ningbo Tianyu Machinery Equipment Co., Ltd.
02
2026
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04
Vacuum Level in Filling Systems: Why ≤100 Pa Changes Everything Introduction
Most engineers underestimate one parameter in filling systems:
👉 Vacuum level
But in NVH components, vacuum directly determines:
- Bubble presence
- Fluid distribution
- Long-term durability
What Does ≤100 Pa Mean?
A vacuum level of ≤100 Pa means:
- Near-complete air removal
- Deep penetration into rubber cavities
Tianyu filling systems achieve this level in dry vacuum filling.
Key Advantages
1. No Air Bubbles → Stable NVH
Air bubbles cause:
- Noise
- Stiffness variation
- Early failure
Low vacuum:
- 1000–2000 Pa → common Chinese level
High vacuum: - ≤100 Pa → stable performance
2. Consistent Filling (Not Time-Based Guessing)
Many systems use:
- Timer-based filling
Tianyu uses:
- Pressure + displacement closed-loop control
➡️ Result:
- Repeatable filling volume
- Stable product quality
3. Full Pipeline Leak Detection
Unique capability:
- Entire pipeline vacuum monitoring
➡️ Detects:
- Micro leakage
- Seal defects
4. Automation Ready
Includes:
- MES integration
- Barcode system
- Camera-based mistake-proofing
➡️ Suitable for smart factories
Application Scenarios
- Hydraulic engine mounts
- Suspension bushings
- Fluid-filled NVH components
Why It Matters in Mass Production
Without deep vacuum:
- Hidden defects
- Customer complaints
- Warranty cost
With ≤100 Pa:
- Stable production
- OEM acceptance
- Reduced risk
Conclusion
Vacuum level is not a spec line.
It is the core determinant of NVH consistency.
Summary
- ≤100 Pa = no bubbles
- Closed-loop control = consistency
- Leak detection = reliability
- MES-ready = automation
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