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FAQ and Service

JW Filter Press provides the best service to you, and offer the high quality filter press machines. Choose us is your good choice!

Frequently Asked Questions

Find out if you have questions about products, orders and our company.

1. Are you a factory or trading Company? Where are you?
We are a real factory and located in Jingzhou, Hengshui City, Hebei Province, China
2. How long can you provide the sample?
The lead time for producing sample: about 15-20 days.
3. What is the maximum processing capacity of a filter press, and how is the model size determined?
The processing capacity of JW Filter Press depends on chamber volume, number of filter plates, and effective filtration area. We use the formula:
Processing Volume (m³) = Chamber Volume × Cycles/Hour × Operating Time.
Model selection requires analysis of material properties (solid content, particle size distribution) and process requirements (e.g., open-discharge/closed-discharge design). Contact our engineering team with your material specifications for a customized solution.
4. How to select filter plate materials (Polypropylene, Rubber, Stainless Steel)?
- Polypropylene (PP): Suitable for weak acids/alkalis (pH 1-12), cost-effective, temperature resistance ≤80°C.
- Rubber: Ideal for abrasive slurries (e.g., mining tailings) due to high wear resistance.
- Stainless Steel (304/316L): Resistant to strong corrosive media (e.g., chlorides, organic acids), temperature tolerance up to 150°C.
  JW provides material corrosion resistance test reports for validation.
5. How to address filter cloth clogging or tearing? What is the replacement cycle?
Filter cloth lifespan depends on material characteristics (viscosity, particle sharpness) and cleaning frequency. Recommendations:
- Apply backflushing + ultrasonic cleaning to restore permeability.
- Use dual-layer composite cloths (e.g., PP + polyester) in high-abrasion environments.
- Standard replacement cycle: 3-6 months. Optional PTFE-coated filter cloths are available for anti-clogging performance.
6. How to optimize high moisture content in filter cakes?
Key parameters for moisture reduction:
- Increase feed pressure (adjustable range: 0.8-2.0 MPa).
- Activate membrane squeeze (secondary compression reduces moisture by 5-10%).
- Extend air-blowing time via PLC control system.
- Optimize mesh size (800-1200 mesh recommended for fine particles).
7. Causes of liquid leakage or plate misalignment during operation?
- Leakage: Check filter cloth edge alignment, ensure hydraulic pressure ≥ rated value (e.g., 25 MPa), and inspect sealing surface wear.
- Plate Misalignment: Calibrate thrust plate levelness, lubricate guide rods, or troubleshoot hydraulic cylinder synchronization (requires displacement sensor recalibration).
8. Core differences between automatic and manual filter presses?
- Fully automatic plate-shifting system (servo motor-driven, positioning accuracy ±0.5 mm).
- High-pressure washing arms (360° online cloth cleaning).
- Smart HMI panel (preset pressure, cycle time, and fault diagnostics).
  Compared to manual models, automation reduces labor by 90% and boosts efficiency by 30%+.
9. Is the equipment suitable for high-temperature (>100°C) or highly corrosive materials?
Yes. Solutions include:
- Steam-heated filter plates (temperature uniformity ±3°C).
- Stainless steel plates + EPDM seals (150°C resistance).
  For aggressive media (e.g., hydrofluoric acid): PVDF-coated plates or titanium alloy construction. Provide chemical composition for customized anti-corrosion design.
10. How to extend filter press service life?
- Routine Maintenance: Replace hydraulic oil every 2,000 hours (ISO VG46), lubricate guide rods weekly (lithium grease).
- Overload Protection: Avoid exceeding rated feed pressure (install pressure sensors for auto-shutdown).
- Corrosion Prevention: Flush chambers with water after shutdown to prevent scaling.
11. After-sales service and spare parts availability?
JW guarantees:
- 12-month global warranty (covers hydraulic systems and electrical components).
- 4-hour remote support + 48-hour emergency spare parts delivery (stocks include plates, cloths, seals).
- Free operator training (multilingual manuals and maintenance videos included).

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Worry-free Service

While every project may present unique challenges, JW Filter Press’s unwavering commitment to technical excellence and client-focused solutions ensures seamless resolution of all operational requirements.

If you dream it, we will get it done

JW Filter Press is a professional filter press supplier in China. If you have an item that you want sourced, we are the most cost-effective one.

Our Products to Get You Started

Provide technical training to relevant personnel. The training content includes: the working principle of the filter press, equipment structure and maintenance, electrical control principles, equipment operation, etc.; the training method is generally on-site training, that is, our company’s after-sales service personnel conduct on-site training for user-related personnel during the equipment installation and commissioning period, so that They master relevant operations, maintenance and repairs, are proficient in using the company’s equipment, and are able to handle various faults. And can help users write equipment operation manuals.

Quality Control

Before the order confirmed finally, we would check the material, color, and dimension of the sample step by step strictly.We maintain strict quality control measures that involve tracing each phase of production from the beginning. Our dedicated QC team carefully inspects every product before it is packed, and every product would be checked by them before packed. We would try our best to help clients solve the problems when they occurred.

We Do Our Own Testing

JW Filter Press specialized in wholesale high products that we can stand behind. Everything we bring into your country must comply with safety standards, be lead-free and meet your requirements. Therefore, we do our own testing because our reputation is on the line.

Mock Up Samples

We accept the mock up samples for your projects.

Provide On-Site Service

Our company has an elite after-sales service team, composed of more than a dozen professional and technical personnel with superb skills, serious work and enthusiastic attitude.

We Provide technical training to relevant personnel. The training content includes: the working principle of the filter press, equipment structure and maintenance, electrical control principles, equipment operation, etc.; the training method is generally on-site training, that is, our company’s after-sales service personnel conduct on-site training for user-related personnel during the equipment installation and commissioning period, so that They master relevant operations, maintenance and repairs, are proficient in using the company’s equipment, and are able to handle various faults. And can help users write equipment operation manuals.

Delivery is no problem, we save your time and money

Our standard production lead time ranges from 35 to 40 days. For urgent requirements, we offer priority air charter services with expedited delivery. Leveraging economies of scale, we provide highly competitive freight rates while ensuring precision in every stage—from comprehensive documentation management to seamless logistics coordination. Whether FOB China or door-to-door global delivery, we maintain end-to-end accountability to guarantee complete satisfaction.

One-Stop Furniture Solution

With Jinwang, you can enjoy a complete filter press solution that includes design, manufacturing, shipping, and installation, all delivered straight from our factory to your site. Our comprehensive services cover everything you need, from start to finish.

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