The AirTAC GFR200-08 AirTAC Filter Regulator NPT1/4 Low-Pressure is a genuine G-series filter regulator: water separation, 40 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT1/4" ports, a differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR200-08 is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single compact body. This unit is the 200 size with a 1/4 in NPT port, built as the low-pressure type for circuits that run at reduced working pressures. It carries the standard 40 um filter element, a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the element is high enough, and an embedded square gauge reading in psi so the set pressure is visible at the unit.
This is a genuine AirTAC part. The GFR series spans the 200, 300, 400 and 600 sizes with port sizes from 1/8 in to 1 in, and options including a 5 um filter element (code W), automatic or manual drains, alternative gauge scales, G or NPT threads and bracket choices. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR200-08 AirTAC Filter Regulator NPT1/4 Low-Pressure |
|---|---|
| Series | GFR200 filter regulator |
| Port size | PT1/4" (NPT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Low-pressure type |
| Adjusting mechanism | Balanced type |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Drain type | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, psi scale |
| Reflux valve | Not fitted |
Specifications follow the official AirTAC G-series air-preparation data. The regulating band is set by the drain type: automatic and differential-pressure drains regulate 0.15 - 0.9 MPa, a manual drain regulates 0.05 - 0.9 MPa. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. Air must not freeze in the unit. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GFR200 | G-series filter regulator, 200 body — sets the port range. |
|---|---|
| 08 | Port size PT1/4". This body offers 06 = PT1/8", 08 = PT1/4". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| (blank) | No reverse-flow valve (the default). |
Field order is size, port, drain, type, bracket, gauge, shape, scale, grade, thread, reflux — a blank position takes the default. Example: GFR300-08 is a 300 body, PT1/4", differential drain, standard type, bracket included, gauge fitted, 40 µm, PT thread, no reflux valve.
A larger body carries a larger port and holds set pressure better as flow rises. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom. The GFR600 uses an aluminium-alloy bowl; the 200, 300 and 400 bodies use PC.
| This model | GFR200 · PT1/4" · 40 µm |
|---|---|
| One size up | GFR300 |
| Add lubrication | GFC200-08 (two-unit set) |
Fixture clamps and swing cylinders on an assembly cell that are rated for reduced air pressures need their supply both cleaned and held at a gentle setpoint. A low-pressure filter regulator at the fixture inlet keeps swarf and moisture out of the clamp cylinders while the psi gauge lets the setter verify the clamp pressure at a glance.
Test benches, pneumatic calibration rigs and lab apparatus fed from a shop-air header need particulate and water removed before the air reaches sensitive instruments. The low-pressure regulation suits instruments specified for modest supply pressures, and the 1/4 in NPT port connects directly to standard bench pipework.
Packaging and labelling machines often run dedicated low-pressure circuits for delicate handling, sealing or web-tension functions. Feeding that circuit through this filter regulator protects the machine's valves and cylinders from condensate and grit while the square psi gauge gives operators a visible setpoint on the line.
Start with the size and port: the 200 series with its 1/4 in port suits lighter-duty circuits, while the 300, 400 and 600 sizes step up in port and flow capacity - match the step to the air demand of the downstream equipment. This unit is the low-pressure type, so it belongs on circuits whose regulated setpoint sits below what a standard regulator is intended for; if your line runs at conventional pressures, ask us about the standard version instead. The differential-pressure drain is the default: it discharges condensate automatically on pressure differential, with no operator attention, but it needs a minimum operating differential to work. If your flow is very low or intermittent, an automatic drain (code A) or a manual drain (code M) may suit better. The 40 um element is the standard grade; specify the 5 um W option if downstream components need finer filtration. The embedded square gauge here reads in psi; MPa and bar scales are available, and an external round gauge is an option. Thread is NPT on this unit; PT is the catalogue standard and G (BSPP) is also orderable. A mounting bracket can be added (this unit ships without one, code J).
Flow for the GFR series is published as curves, not a single rated number, so we cannot quote one figure honestly. Send us your application details and we will confirm the sizing against the datasheet curves before you order.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR series as curves, not as a single rated figure, so we do not quote a number that the catalogue does not state. Send us your application - port size, downstream demand and operating pressure - and we will confirm the sizing against the datasheet curves on request before you order.
The differential-pressure drain is the default: it discharges collected condensate automatically whenever the pressure differential across the 40 um filter element rises high enough, so no operator action is needed. It relies on a minimum operating differential to function, so on very low-flow or intermittent-duty circuits an automatic drain (code A) or a manual drain (code M) can be the better choice - both are orderable options in the same series.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity, thread type (PT / G / NPT), gauge scale and destination. We confirm price, availability and lead time — usually within 7-8 hours.