Chem-Fuse™

Wilden® Chem-Fuse™ Patented Integral Piston Diaphragms

Chem-Fuse™ IPDs represent a significant advancement in conventional diaphragm pumps, a type of positive displacement technology. The one-piece design eliminates the outer piston, reducing abrasion, leak potential, and maintenance.

7 Key Advantages Over Traditional AODD Pump Diaphragms

1. Delivers 2x to 15x longer life by eliminating outer-piston abrasion and product-trap areas
2. Less downtime, more operational uptime
3. Improves containment and safety when handling aggressive, hazardous, or valuable fluids by eliminating leak paths
4. Extended service life under demanding conditions
5. Increased reliability in harsh or critical fluid service
6. Easier cleanability for faster changeovers in multi-product environments
7. Maintains or enhances performance (flow, suction lift) relative to reduced-stroke designs — up to 100% increased flow/suction lift in some cases vs. short-stroke IPDs (PDF Source)

Chem-Fuse™ Diaphragms: Upgrade Without Compromise

In chemical diaphragm pumps, you can’t accept weak links. Traditional diaphragms and many reduced-stroke IPDs introduce tradeoffs: either you sacrifice durability or performance. Chem-Fuse™ diaphragms sidestep that compromise. They combine full-stroke design with an integral piston, eliminating leak zones while preserving or enhancing flow and suction.

Features and Benefits That Drive Performance

Chem-Fuse™ diaphragms are engineered for robustness, compatibility, and versatility. Key specs include:

• Materials: Wil-Flex®, Bunalast™, non-food-grade Saniflex™
• Temperature Range: From –40 °C up to 130 °C (varies by material)
• Sizes & Compatibility: 1″ (25 mm) to 4″ (102 mm) — compatible with Wilden’s® Pro-Flo® SHIFT, bolted metal, and plastic pump models
• High-pressure Option: Available for Wilden® H800 models
• Large Solids Passage Option: Available for the Wilden PS810 and PS1510 Brahma models

Chem-Fuse™ Benefits summary:

• Longer diaphragm life reduces maintenance costs
• No leak path improves safety for hazardous fluids
• Superior flow/suction lift (versus reduced-stroke alternatives)
• Broad chemical and temperature compatibility
• Drop-in replacements for many Wilden® pumps

Tailored for Critical Industries

Chem-Fuse™ diaphragms are ideal where pump integrity, chemical compatibility, and reliability are non-negotiable:

• Agriculture and food: Cleanability and purity are paramount
• Chemical Processing / Specialty Chemicals: Handling aggressive or hazardous fluids
• Paints, Coatings, Inks: Consistent transfer of solvents, pigments, resins
• Mining / Metals / Slurry: Withstand abrasion, high wear environments
• Water & Wastewater / Environmental: Durable in corrosive or cyclical duty

Why Chem-Fuse™?

Chem-Fuse™ is more than a diaphragm — it’s a performance leap. Unlike conventional diaphragms or suboptimal IPDs, it doesn’t force tradeoffs. Its one-piece integral design eliminates product trap zones while preserving full-stroke performance. That translates into higher uptime, safer operation, and lower lifecycle cost.

Chem-Fuse™ is part of Wilden’s® tradition of innovation in AODD pump technology. You can use the Chem-Fuse™ savings calculator to discover the potential impact of Chem-Fuse™ products on your business.

If you’re interested in seeing what parts are compatible with what pump, use the pump finder to help source parts for specific products. Every pump and part on the PSG® Store ships directly from the manufacturer.

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