{"id":1897,"date":"2026-04-20T15:14:59","date_gmt":"2026-04-20T07:14:59","guid":{"rendered":"http:\/\/hegutf.com\/?post_type=product&p=1897"},"modified":"2026-06-02T17:52:49","modified_gmt":"2026-06-02T09:52:49","slug":"duplex-filter","status":"publish","type":"product","link":"https:\/\/hegutf.com\/en\/product\/duplex-filter\/","title":{"rendered":"Dual-Stage Filter"},"content":{"rendered":"

Dual-Unit Filter | One in Use, One on Standby for Uninterrupted Continuous Filtration\u2014Security Filtration Equipment<\/h2>\n

\ud83d\udca1Dual-tank filter featuring a 304\/316L stainless steel dual-tank parallel configuration, with valve switching between active and standby units, allowing for bag and cartridge replacement without shutting down the system. Designed for continuous safety filtration in pharmaceutical, food, chemical, and water treatment production lines.<\/p>\n

I. Product Introduction<\/h3>\n

The dual-filter unit consists of two stainless steel filters connected in parallel. A switching valve allows for an active-standby configuration, enabling filter bags to be replaced or filter elements to be cleaned without shutting down the system, thereby ensuring 24-hour continuous operation of the production line.<\/p>\n

II. How It Works<\/h3>\n

Under normal conditions, Tank A is in operation and Tank B is on standby. When the pressure differential between the inlet and outlet of Tank A reaches the set value (e.g., 0.15 MPa), the switching valve activates to bring Tank B online. At the same time, Tank A is shut down, the top cover is opened to replace the filter bags or clean the filter elements, and once the work is complete, Tank A returns to standby.<\/p>\n

III. Main Structural Components<\/h3>\n\n\n\n\n\n\n\n
Stainless Steel Filter Cartridges<\/td>\nIntegrated dual-chamber design with two types of lid-opening mechanisms: quick-release clamps and flange bolts<\/td>\n<\/tr>\n
Internal Support Components<\/td>\nStainless Steel Filter Basket (Filter Bag Type), Filter Cartridge Holder (Filter Cartridge Type)<\/td>\n<\/tr>\n
Switch Valve<\/td>\nManual four-way valve\/pneumatic ball valve for switching between cylinder modes<\/td>\n<\/tr>\n
Auxiliary Valves<\/td>\nSingle-barrel independent air vent, bottom drain valve<\/td>\n<\/tr>\n
Pressure Monitoring<\/td>\nEach cylinder is equipped with a pressure gauge at its inlet and outlet, with a pressure differential warning system.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

IV. Core Advantages<\/h3>\n

\u2705 Online maintenance without downtime<\/p>\n

Online switching between the active and standby units ensures that production lines remain operational during filter media maintenance and replacement, thereby avoiding losses caused by downtime and reduced output, and supporting 24-hour continuous production.<\/p>\n

\u2705 Wide range of accuracy<\/p>\n

Filter bags range from 1 to 200 \u03bcm, and filter cartridges range from 0.2 to 100 \u03bcm, covering everything from coarse filtration to sterile precision filtration.<\/p>\n

\u2705 Wide selection of corrosion-resistant seals<\/p>\n

Cylinder body made of SUS304\/316L; seals made of multiple materials including EPDM, PTFE, and Viton; suitable for various operating conditions involving acids, alkalis, and solvents.<\/p>\n

\u2705 Easy to disassemble, assemble, and clean<\/p>\n

The quick-release clamp lid design allows the filter bag to be removed for cleaning and reused, saving time and effort during operation and maintenance.<\/p>\n

\u2705 Secure locking mechanism<\/p>\n

The clamp is equipped with a safety locking mechanism that prevents accidental opening of the lid while under pressure, thereby eliminating the risk of material spillage.<\/p>\n

V. Typical Use Cases<\/h3>\n

\u2705 Traditional Chinese Medicine Manufacturing: Precision Filtration of Traditional Chinese Medicine Injectables Before Filling<\/p>\n

Use 0.22 \u03bcm and 0.45 \u03bcm filter cartridges for final safety filtration of the pharmaceutical solution to ensure filling cleanliness.<\/p>\n

\u2705 Fine Chemicals: Continuous impurity removal from resins, coatings, and organic solvents<\/p>\n

Continuous filtration is installed upstream of the production line to intercept solid impurities and protect downstream pumps and equipment.<\/p>\n

\u2705 Food Industry: Pre-filtration for edible oils, fruit juices, and syrups<\/p>\n

Removes pulp residue and gelatinous particles, ensuring the clarity of the final product.<\/p>\n

\u2705 Water Treatment: Pre-filter for Reverse Osmosis (RO) Systems<\/p>\n

Dual-cartridge filter system that traps sediment and impurities to protect the RO membrane elements.<\/p>\n

\u2705 Oil Industry: Filtration and Treatment of Produced Water and Injection Water from Oil Fields<\/p>\n

Continuous online removal of suspended solids to meet the purity standards for reinjection water.<\/p>\n

VI. Optional Configurations<\/h3>\n

Pneumatic automatic switching valve, explosion-proof electrical control system, full-unit insulation jacket, remote differential pressure transmitter, and aseptically polished cylinder.<\/p>\n

VII. Service Commitment<\/h3>\n

We customize cylinder specifications and select filter media based on processing capacity and the pH level of the medium. We provide installation guidance and assistance with filter media selection, offer nationwide shipping, and provide 24-hour on-site after-sales service in Chongqing.<\/p>\n

\ud83d\udd17 Recommended Compatible Devices<\/h3>\n

Reference Guide for Selecting Production Line Equipment:
\n\u2705 Front-end feeding equipment:Mixing and Storage Tanks<\/a>
\n\u2705 Precision Sterilization at the Back End:Separation and Purification Equipment<\/a>
\n\u2705 Pipeline Accessories:Support Systems<\/a><\/p>","protected":false},"excerpt":{"rendered":"

Dual-unit filter made of 304\/316L stainless steel; one in use and one on standby for filter replacement without shutdown; compatible with both filter bags and filter cartridges; continuous security filtration equipment for the pharmaceutical, chemical, food, and water treatment industries; custom-made to non-standard specifications.<\/strong><\/p>\n

\n\ud83d\udcde Request a Quote:19562136132<\/a><\/span>
\n\ud83d\udc65 Online Consultation: One-Click Inquiry<\/a><\/span>\n<\/div>","protected":false},"featured_media":1935,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[95],"product_tag":[],"class_list":["post-1897","product","type-product","status-publish","has-post-thumbnail","product_cat-separation-purification-equipment","first","instock","shipping-taxable","product-type-simple"],"yoast_head":"\n\u53cc\u8054\u8fc7\u6ee4\u5668_\u5728\u7ebf\u5207\u6362\u5236\u836f\u8fc7\u6ee4\u8bbe\u5907-\u6838\u8c37\u5929\u5bcc<\/title>\n<meta name=\"description\" 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