1. Product Introduction

The high flow filter needle is an indispensable inner structural fitting matched with industrial‑grade hi‑flow water‑filter replacement cartridge inside ultrafiltration equipment. Many buyers only focus on the outer pleated filter layer while ignoring this tiny yet vital part. Manufactured with food‑grade polypropylene raw material, the filter needle runs through the centre of large‑diameter high‑flow cartridges, supporting the whole pleated filter medium and stopping filter‑layer collapse under high‑speed water impact.

As one key accessory for ultrafiltration pretreatment, it works perfectly alongside glass‑fiber filter cartridge for chemical‑liquid filtration scenarios. Unlike ordinary plastic brackets, our high‑flow filter needle features evenly‑distributed diversion holes. These holes distribute incoming raw water all over the filter cartridge, avoid local filter‑material overload, and make full use of the entire filtering area. Our company Xinxiang Lifeierte Filter Corp., Ltd supplies complete matched filter needles for all our high‑flow filter‑element series, compatible with mainstream big‑flow filter‑cartridge specifications on the market.

Without the supporting high‑flow filter needle, the inner pleated filter layer will squeeze and stick together under high‑speed liquid pressure. The effective filtering surface will shrink sharply, water‑flow speed drops, pressure difference rises rapidly, and the whole filter cartridge will reach its pollution‑holding limit far ahead of schedule. For industrial ultrafiltration devices running 24‑hour non‑stop, the filter needle decides the overall operating stability and replacement cycle of filter consumables.

2. Working Principle

The working logic of the high‑flow filter needle can be broken down into three core steps: structure support, flow diversion and uniform pressure bearing.

First, when raw‑water liquid flows into the inner cavity of the filter cartridge, the high‑flow filter needle penetrates the central tube and props up the folded filter medium from the inside‑out. It keeps gaps between each pleat, so water can pass through every layer of filter cloth smoothly.Second, the uniformly‑arranged diversion holes on the needle scatter the incoming‑water flow. The liquid filter component guides the water stream to spread to the full height and circumference of the cartridge, rather than rushing toward a single local zone.Third, the rigid needle bears the inward hydraulic pressure. It offsets the squeezing force brought by high‑flow‑rate liquid and prevents pleated‑filter‑element deformation.

After preliminary interception by the outer filter cartridge, water flows outward‑to‑inward and enters the ultrafiltration membrane module. The stable structure supported by filter needles guarantees steady inlet‑water pressure for ultrafiltration equipment, reduces membrane‑element impact, and lowers the frequency of ultrafiltration‑membrane back‑washing. In complex chemical‑liquid operating conditions, this accessory also lessens the abrasion between filter layers and prolongs the service life of expensive filter‑cartridge consumables.

3. Main Technical Parameters

All parameter indicators are tested and calibrated to match our full set of high‑flow filter cartridges. When customers purchase durable high‑capacity pleated cartridges, we can deliver matched filter‑needle accessories in one package.

4. Product Quality Standard

Every batch of our high‑flow filter needles goes through strict multi‑stage quality inspection before factory shipment.

Our factory holds complete industrial‑filtering‑product production qualifications. All accessories are produced in our dust‑free workshop, meeting the purification requirements for drinking‑water, food‑processing and pharmaceutical‑grade ultrafiltration equipment.

5. Wide Application Fields

1. Industrial‑Water Ultrafiltration Pretreatment

   The high flow filter needle fits large‑flow filter cartridges for circulating‑water, boiler condensed‑water and factory sewage pretreatment. It stabilizes filter‑cartridge structure and guarantees stable water intake for ultrafiltration membranes.

2. Chemical‑Industry Liquid Filtration

   When filtering corrosive chemical solvent, paint slurry and industrial coolant, the filter needle protects pleated filter elements from high‑speed‑flow impact damage.

3. Food and Beverage Water Treatment

   Matched with food‑grade filter cartridges, the non‑toxic polypropylene filter needle applies to beverage raw‑water, juice and edible‑liquid ultrafiltration‑purification systems.

4. Pharmaceutical‑Industry Pure‑Water Equipment

   It supports high‑flow filter cartridges inside medical‑grade pure‑water ultrafiltration devices, avoiding filter‑material collapse and lowering particulate‑matter content in finished pure water.

5. Energy and Power‑Plant Water System

   Power‑plant condensed‑water filtration, circulating‑cooling‑water treatment and oil‑field produced‑water ultrafiltration systems all require large‑flow filter needles as internal supporting parts.

 FAQ

Q1: What is the function of a high‑flow filter needle?

A1: It acts as the inner support skeleton for high‑flow filter cartridges, separates folded filter layers, distributes liquid flow evenly and prevents filter‑element collapse under high water pressure.

Q2: Can filter needles fit all brands of high‑flow filter cartridges?

A2: Our standard‑size products suit most 4.5‑inch large‑diameter filter elements. We also support custom‑made sizes for special‑specification cartridges.

Q3: Do I need to replace the filter needle together with the filter cartridge?

A3: In general, the polypropylene filter needle can withstand 3‑5 filter‑cartridge cycles. You only need to replace it when cracks or deformation appear.

Q4: Is the filter needle resistant to acid and alkali liquid?

A4: Standard PP‑made needles resist weak acid and weak‑alkali liquid. For strong‑corrosion working environments, we provide nylon‑enhanced customized versions.

Q5: Will the filter‑needle diversion holes block water flow?

A5: The evenly‑distributed round holes are scientifically‑designed. They spread water flow rather than blocking flow and lift the effective filtering area of your filter cartridge.

Q6: Can I buy filter needles separately without filter cartridges?

A6: Yes, our company supplies single filter‑needle accessories as well as full‑set matched filter cartridges. Contact our sales team for detailed specifications.