AF800 / AF900 Series Large Capacity High Flow Air Filter

Brand: SOLH by Richge Technology 

Product Overview

     SOLH AF800 and AF900 are industrial large-caliber high-capacity main pipeline air filters, fully dimension & performance interchangeable with SMC original AF800/AF900. Designed for air compressor main air source, whole production line centralized air supply and multi-valve island high-flow pneumatic systems. Different from small split air service units AF200/300/400, they feature oversized flow channel, ultra-high treatment flow and large capacity water collection bowl.

     It centrifugally separates condensed water, rust and dust impurities inside compressed air, fully protecting downstream solenoid valves, cylinders, vacuum ejectors and large pneumatic actuators, greatly reducing failure rate of the whole pneumatic line.

Two complete specifications:

   1.  AF800: Medium large flow, port G1¼ / G1½ (1.25 / 1.5 inch)

   2.  AF900: Extra large main pipeline filter, port G2 (2 inch)

     Optional accessories: Manual drain / float auto drain, multi-grade filter element, transparent PC bowl / metal explosion-proof bowl. Widely matched with machine tool clusters, lithium battery production lines, painting workshops and complete chemical equipment with high-power air source demand.

Complete Model Coding Rule

   Full order code format: AF800-F16 / AF900-F20 - □ - □

    1. AF800 / AF900: Series code for large capacity high flow air filter

    2. F12 / F16 / F20: Port thread size

     -- F12 = G1¼ (1.25")

     -- F16 = G1½ (1.5")

     -- F20 = G2 (2")

   3. Middle suffix: Drain type

     -- Blank: Standard manual drain

     -- AD47: NC normally closed float auto drain (for PC bowl, no air leakage after equipment shutdown)

     -- AD48-6: NO normally open float auto drain (for nylon metal bowl, continuous automatic drainage)

   4. End suffix: Water bowl material option

     -- Blank: Standard transparent PC bowl + metal anti-collision protective cover

     -- M: Rust-proof metal bowl with liquid level observation window (for dusty, oily, outdoor harsh environments)

     -- MG: Metal bowl with built-in liquid level gauge for remote water volume observation

   5. Filter element precision customizable:

     -- Standard 5μm; optional 2μm high precision, 10/20/40/70/100μm coarse filter

Universal Core Technical Specification Table

Internal Structure & Filtration Working Principle

  1. Stage1: Centrifugal Water Separation Guide Structure

     -- Airflow rotates at high speed along tangent direction; centrifugal force throws liquid condensed water, oil droplets and large rust particles to the inner wall of the bowl, which settle to the bottom by gravity. Over 95% liquid pollutants are pre-separated to reduce filter element load and extend replacement cycle.

  2. Stage 2: Multi-Layer Fiber Filter Element

     -- Compressed air after centrifugal dehydration passes through multi-layer fiber filter cartridge to intercept tiny solid dust and fine oil aerosol particles. The 2μm high-precision version provides ultra-clean air source for precision proportional valves and vacuum circuits.

  3. Water Splash Baffle Partition Built-In Above Bowl

     --  Isolates settled water at the bottom to avoid secondary entrainment of liquid water by airflow into clean air pipeline.

  4. Detachable Water Bowl + Drain Assembly

     Drain valve integrated at bottom with two drainage solutions:

     -- Manual drain: Press bottom button to discharge accumulated water manually

     -- Float auto drain: Float rises when water reaches threshold to open drainage automatically, unattended operation for continuous production lines

   5. Hard Anodized Aluminum Alloy Main Body

     -- Large straight-through flow channel with ultra-low air flow resistance, stable air supply without obvious pressure drop under full 

     -- large-flow load; anti-oil and anti-corrosion surface treatment.

Optional Accessories & Material Selection Guide

   1. Three Water Bowl Options

   1.1 Standard transparent PC bowl (factory default)

     -- Advantage: Real-time visual water level observation, equipped with metal anti-collision shell to prevent breakage by workshop iron scraps. Suitable for dry indoor ordinary automated production lines.

   1.2 Nylon metal protective bowl (suffix M)

     -- Advantage: High impact resistance, cutting fluid & UV weather resistance, no brittle cracking risk. Ideal for dusty oily painting and high-temperature machine tool harsh working conditions.

   1.3 Metal bowl with liquid level gauge (suffix MG)

     -- External observation window on metal body, readable water volume for light-shielded closed explosion-proof environments, preferred for chemical and explosion-proof workshops.

   2. Two Auto Drain Model Comparison Table

  3. Filter Element Precision Selection Guide

     -- 5μm standard filter: Universal for most machine tools, cylinders and solenoid valves, best cost performance

     -- 2μm high-precision filter: Vacuum ejectors, precision proportional regulators, clean air circuits for 3C electronics production lines

     -- 10~100μm coarse filter: Primary pre-filter at air compressor outlet to protect downstream precision air source components

Core Product Competitive Advantages

   1. Large bore ultra-low flow resistance

     -- 1.25/1.5/2 inch straight-through valve body with far larger flow cross-section than small AF series. Minimal pressure attenuation during synchronous action of multi-cylinder and multi-valve islands, stable output thrust for all equipment.

   2. Large capacity water storage chamber

     -- 45cm³ large volume bowl reduces frequent drainage frequency, perfect for centralized filtration at air compressor main pipeline.

  3. Full coverage for harsh working conditions

     -- Free selection of transparent PC / metal explosion-proof bowl, applicable to indoor, outdoor, painting dusty and chemical explosion-proof environments.

  4. Matched complete whole-line air source solution

     -- Can be combined with AR800/AR900 large flow pressure regulator and AL800/AL900 oil mist lubricator to form AFC two-unit / AC three-unit large capacity air service assembly, complete main air source processing unit.

  5. Fully interchangeable with imported brands

     -- Consistent mounting dimension, thread specification and filter element size with international mainstream brands. Direct replacement for air compressor main pipeline renovation without modifying pipelines or brackets.

  6. Low maintenance & long service life

     -- Centrifugal pre-separation slows filter element contamination speed; filter cartridge can be disassembled, cleaned and reused to reduce consumable replacement cost.

Standard Complete Air Source Matching Solutions

  1. Solution 1: Heavy-Duty Production Line Main Air Source 3-Unit Assembly

     -- Air compressor outlet → AF900-F20 Filter + AR900 Regulator + AL900 Lubricator (AC900 three-piece unit) → PA nylon main pipeline branch → 4V valve islands, MSQ rotary table cylinders, 4F foot operation consoles at each station

  2. Solution 2: Oil-Free Two-Unit Assembly for Explosion-Proof Lithium Battery & Painting Workshops

     -- Air compressor main pipeline → AF800-F16 metal bowl filter + AR800 regulator (AFC800 two-unit, remove lubricator) → 50-VFE/50-VPE explosion-proof solenoid valves + ZU vacuum ejector grabbing stations

  3. Solution 3: Centralized Air Supply for Small Machine Tool Clusters

     -- AF800-F12 (G1¼) high flow filter → Multi-way PU/PA main pipeline supplying multiple machine tools with 3F foot valves, SC standard cylinders and C110 air blow guns

Typical Industrial Application Scenarios

     -- Large CNC machine tool clusters, heavy stamping & riveting equipment main air source

     -- Lithium battery coating, cell assembly explosion-proof automated production lines

     -- Automobile complete vehicle painting, ink & dust explosion-proof workshops

     -- Large packaging lines, logistics sorting multi-station centralized air supply

     -- Chemical pipeline valve automatic control, oil & gas supporting complete pneumatic equipment

     -- Primary pre-filter at air compressor room host inlet to protect downstream precision air source components

Selection & Operation Specification Notes

  1. Flow Selection Rule

     -- If total air consumption of cylinders and valve islands on single pipeline exceeds 6000 L/min, AF800 must be selected; over 12000 L/min choose AF900. Small AF200/300 cannot bear high flow, causing severe pressure drop and insufficient cylinder thrust.

  2. Bowl Selection Red Line

     -- Painting, cutting fluid oily environment, outdoor open air and explosion-proof areas are prohibited from using standard PC transparent bowl. Must switch to M/MG metal version to avoid safety hazards caused by cracking and water leakage after impact.

  3. Mandatory Rule for Vacuum Circuits

     -- Vacuum grabbing production lines only adopt AFC two-unit assembly (without lubricator). AL oil mist lubricator cannot be connected in series, to prevent lubricating oil blocking nozzles of ZU/ZB vacuum ejectors.

  4. Installation Direction Standard

     -- IN/OUT airflow arrow printed on top of valve body, install strictly following arrow air inlet direction; water bowl must face vertically downward to ensure normal settlement and collection of condensed water.

  5. Maintenance Cycle Requirements

     -- PC bowl: Check accumulated water daily; auto drain model inspect float jamming weekly

     -- 5μm standard filter element: Clean every 30 days, replace every 15 days under heavy dust conditions

     -- 2μm high precision filter element: Replace every 15 days

     -- Before maintenance: Close front main HSV manual shut-off valve, exhaust residual pipeline pressure before removing bowl and filter cartridge

One Sentence Summary

     SOLH AF800/AF900 large capacity main pipeline air filter adopts centrifugal pre-separation structure with 12000~20000 L/min ultra-high flow, optional auto float drain and transparent/metal explosion-proof water bowl, matching AR/AL800/900 to form complete large-bore air service unit as primary moisture & impurity separation equipment for air compressor main lines, lithium battery, painting and heavy machine tool centralized air supply systems.