- 20+ Years of Industry Expertise: We've spent over two decades specializing in sintered metal filtration. Our engineering team averages 20 years of experience, understanding the critical requirements of hydraulic, chemical, and high-purity applications across diverse industries.
- Engineering-Driven Problem Solving: We don't just take orders—we solve problems. Our engineers work directly with clients to understand on-site challenges, whether matching legacy filter dimensions, selecting optimal filtration ratings, or developing custom solutions for unique applications .
- Built to Last, Priced for Reality: Through vertical integration and lean manufacturing, we deliver filters that meet premium quality standards at factory-direct prices. We use high-purity stainless steel mesh, multi-layer sintered construction, and precision welding because cutting corners on filtration always costs more in the long run.
- Global Experience, Local Attention: Our filters support customers in over 120 countries, yet we maintain the responsiveness of a specialized manufacturer . When you contact Huahang, you're working with people who understand that every application matters.
- ISO 9001 Certified Quality: We operate under a rigorous multi-level quality control system .
FAQ
Q: Is this a genuine Rexroth filter?
A: This is a high-performance direct replacement element manufactured by Huahang Filter. It is engineered to provide equivalent fit, filtration efficiency, and performance to the original Rexroth R928022276 part. The part number is used for reference and identification purposes only.
Q: How can I confirm this filter will fit my specific housing?
A: This product is a direct cross-reference for part number R928022276. The surest method is to verify that this exact number is listed in your equipment's service manual or is printed on the filter currently installed in your system. You may also check the filter housing label for the specified element number.
Q: Is this filter compatible with synthetic and fire-resistant (HFD) hydraulic fluids?
A: The standard construction is compatible with a wide range of mineral-based and common synthetic hydraulic oils. For use with phosphate ester, water-glycol, or other specialty fluids, verification of chemical compatibility with the filter media and seals is strongly recommended prior to installation. Please specify your fluid type when ordering.
Q: What is the recommended service interval?
A: Replacement intervals depend on your system's operating conditions, fluid type, and contamination levels. Always prioritize the service interval specified in your equipment manufacturer's manual. The most accurate method is to monitor the pressure differential across the filter housing and replace the element when it reaches the maximum recommended delta-P (typically indicated by a gauge or indicator on the housing).
Q: How do I store spare filter elements properly?
A: Store filter elements in a cool, dry environment away from direct sunlight, extreme temperatures, and chemical fumes. Keep them in their original packaging until ready for use to prevent contamination prior to installation.
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