ARK KAW4000-04D Pneumatic Filter-Pressure Reducing Valve (FRL Combo) 0.05-0.85 MPa

ARK · Pneumatic Air Preparation · 1/2" Port (G1/2) · Auto-Drain · In stock

The ARK KAW4000-04D is a combined air filter + pressure-regulating valve (often called an FRL or “filter-regulator-lubricator” combo unit) used at the front end of compressed-air preparation systems. The “04” port code corresponds to 1/2" (G1/2) thread, the working range 0.05-0.85 MPa (~7-123 psi) covers the standard pressure band required by most factory pneumatic systems, and the “D” suffix indicates an auto-drain bowl that purges condensate on power-up / on a timed cycle, eliminating the daily manual pet-cock routine on the shop floor.

The unit pairs a 5 µm sintered-bronze filter element (water, rust and oil-aerosol removal) with a balanced poppet pressure regulator and a clear polycarbonate bowl with metal bowl guard. Typical duty: feeding 24 VDC coil-driven 5/2 and 5/3 solenoid valves, pneumatic cylinders, parallel grippers, vacuum generators, and air-jet blow-off manifolds downstream of a PLC discrete output rack in discrete and process automation.

Key Specifications

Datasheet Highlights

• 2-in-1 filter + regulator body. Combines the dust/water removal stage and the pressure-regulating stage in a single housing, halving the footprint vs. a traditional three-piece FRL and reducing leak points by one.
• 0.05 MPa low-end set-point. The lower bound reaches 0.05 MPa (about 0.5 bar), suitable for low-pressure force-test rigs, label-blowing air knives, and gentle vacuum-generator feed where high pressure would damage the workpiece.
• Balanced poppet regulator. Secondary-side pressure feedback keeps the outlet stable even when upstream tank pressure swings between 0.6 and 1.0 MPa, which is critical when the same compressor feeds multiple Siemens pneumatic manifolds and a packaging line that intermittently opens a large-bore cylinder.
• Auto-drain (“D” suffix). Internal float valve opens at the end of every shift and on power-up to dump condensate. On the legacy manual-drain (“C”) variant, an operator must remember to crack the pet-cock; on the “D” variant, the drain happens automatically and is logged as part of preventive maintenance.
• 5 µm standard element, optional 40 µm. The default 5 µm element protects downstream 5/2-way solenoid valves from oil aerosol; for dirty compressed-air networks, pre-filtration with a 40 µm coalescing stage extends element life.
• Polycarbonate bowl with metal guard. Visual inspection of condensate level is possible without breaking the air line; the metal guard prevents crack propagation in case of impact.
• Pressure gauge & lockable adjustment knob. The locking knob prevents unauthorized set-point changes on the factory floor, an important consideration in Mitsubishi MELSEC-controlled and Omron SYSMAC-controlled cells where the regulated pressure is part of the validated process.

Typical Applications

The KAW4000-04D is sized for a 1/2" compressed-air trunk line. In a typical B2B factory configuration, the unit sits between the main air receiver / dryer and the local air-distribution manifold, conditioning the air that feeds the downstream pneumatic components.

• Discrete assembly lines. Conditioning the air for 5/2-way and 5/3-way solenoid valves that drive pneumatic cylinders, rotary actuators, and stopper pins on Allen-Bradley ControlLogix and CompactLogix-controlled conveyor cells.
• Pick-and-place & gripper stations. Providing stable low-pressure air to parallel grippers and vacuum generators on SCARA and 6-axis robot end-effectors.
• Air-jet blow-off & cleaning. Regulating the supply for ionizer air-knives and panel-cleaning blow-off nozzles in packaging and electronics lines.
• Process automation skids. Mounted on local panels feeding Schneider Modicon and Omron SYSMAC CP1 / CJ2 pneumatic valve islands in water-treatment and food & beverage skids.
• Low-pressure test rigs. 0.05 MPa low-end set-point allows direct use on leak-test fixtures and pneumatic force rigs.
• CNC tool-change & chip-blast. Conditioning the air for ATC cylinders and chip-blast nozzles on Fanuc and machining centers where oil-laden shop air would otherwise contaminate the tool taper.
• Vision inspection stations. Feeding air-curtain and lens-cleaning blow-off on KEYENCE CV / XG vision and Panasonic / Yaskawa vision stations where a stable 0.4 MPa supply prevents contamination of the lens.

Related Modules & Cross-Reference

The KAW4000-04D sits in the middle of a compressed-air preparation chain. When you migrate from older FRL assemblies or from competitors such as Festo MSB4-1/2, SMC AR20-02, Airtac AC2000-02 or Mindman MAR3000-04, the KAW4000-04D is a drop-in equivalent at the same G1/2" port and comparable 0.05-0.85 MPa regulation band. KOEED can cross-reference the exact body dimensions and gauge orientation against the unit being replaced.

Warranty & Authenticity

Each KAW4000-04D ships with a clean dry-bowl and is bench-tested for set-point repeatability and drain operation before packing. KOEED sources pneumatic FRL units through its China sourcing network and inspects the regulator spring, poppet seat, polycarbonate bowl, and gauge calibration on receipt.

• Worldwide shipping with DHL / FedEx / UPS on every confirmed PO.
• 24-hour quote turnaround on business days for single-line and full-BOM RFQs.
• Cross-reference support — send a photo of the nameplate or a photo of the existing manifold, and we will identify the equivalent KAW-family body and confirm the auto-drain / manual-drain variant before you order.
• Hard-to-find coverage — if a specific FRL body, gauge size or port thread is out of stock, our AI Diagnostic Tool and China sourcing team can propose an equivalent from the same family or a verified cross-brand substitute.