Iwaki KB0194 Bellows 2" – Replacement Part for KB Series Pumps
When a bellows pump starts losing prime or its flow becomes inconsistent, the bellows itself is usually the first place to look. The Iwaki KB0194 is a 2" bellows built specifically for Iwaki's KB series pumps, designed as a single molded unit that flexes tens of millions of times without cracking or losing its seal. Because the KB series is used to move acids, alkalis, and other aggressive chemical solutions, this bellows is made from a chemical-resistant blend that holds up where standard rubber components would break down quickly.
Swapping in a new bellows is one of the simplest ways to bring an aging KB pump back to full performance. Since these pumps have no shaft seal, the bellows is the only barrier between the moving mechanism and the fluid being pumped, so its condition directly affects both leak prevention and dry-run reliability. A worn or fatigued bellows often shows up as reduced discharge pressure, irregular flow, or minor seepage around the pump head, and replacing it typically resolves all three.
Keeping a KB0194 on hand is a practical move for anyone maintaining chemical dosing, plating, or fluid transfer systems that rely on Iwaki bellows pumps. It's a low-cost part that protects a much more expensive pump investment, and because it's a direct-fit OEM component, installation follows the same straightforward process outlined in Iwaki's standard KB series maintenance guidance.
Key Features
- Single-piece molded bellows construction for consistent expansion and contraction
- Chemical-resistant material suited for acids, alkalis, and corrosive solutions
- Engineered for tens of millions of stroke cycles before replacement
- Leak-free design that eliminates the need for a shaft seal
- Direct OEM fit for Iwaki KB series bellows pumps
Applications
- Chemical feed and metering systems
- Plating and surface treatment processes
- Water and wastewater treatment dosing
- Photographic and industrial fluid handling
- General corrosive liquid transfer in built-in equipment
Specifications
- Part Number: KB0194
- Bellows Size: 2"
- Compatible Series: Iwaki KB series bellows pumps
- Material: Chemical-resistant synthetic rubber compound
- Component Type: Wear/replacement part (recommended replacement interval based on stroke count or operating hours)
Frequently Asked Questions
Q: How do I know if my KB series pump needs a new bellows?
A: Common signs include reduced discharge flow, irregular pumping action, or slight liquid seepage near the pump head, all of which usually point to bellows fatigue.
Q: Is the KB0194 compatible with all KB series pump models?
A: It is designed for Iwaki KB series pumps that use a 2" bellows, so it's important to confirm your specific pump model uses this size before ordering.
Q: How often should the bellows be replaced?
A: Iwaki recommends replacing the bellows based on stroke count or operating hours, whichever comes first, as part of routine preventive maintenance.
Q: Can this bellows handle strong acids and alkalis?
A: Yes, the material is formulated to resist a wide range of corrosive chemical solutions commonly used in chemical feed applications.
Q: Do I need special tools to install the KB0194 bellows?
A: No special tools are required; the bellows is designed for straightforward removal and installation following standard KB series maintenance steps.
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