The AirTAC GFR600-25 AirTAC Filter Regulator NPT1 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" ports, a automatic 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 GFR600-25 is an AirTAC GFR-series filter regulator: one body that removes water and particulate from compressed air and regulates the downstream pressure. This size 600 unit carries a 1 in NPT port, an automatic drain that discharges collected condensate without manual attention, a 40 um standard filter element, an embedded square gauge scaled in MPa, and an aluminium alloy bowl (size 600 bowls are aluminium; smaller GFR sizes use polycarbonate). It is the low-pressure type, built for circuits that hold a reduced pressure setting. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family runs from size 200 to 600 with ports from 1/8 in to 1 in, a choice of automatic, manual or differential-pressure drains, 40 um or 5 um (W) filtration, MPa, psi or bar gauge scales, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and datasheet details for your application.
| Model | GFR600-25 AirTAC Filter Regulator NPT1 Low-Pressure |
|---|---|
| Series | GFR600 filter regulator |
| Port size | PT1" (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 | Automatic drain |
| Bowl material | Aluminium alloy |
| Pressure gauge | Fitted — square, MPa 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.
| GFR600 | G-series filter regulator, 600 body — sets the port range. |
|---|---|
| 25 | Port size PT1". This body offers 20 = PT3/4", 25 = PT1". |
| A | Drain: Automatic 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. |
| 1 | Gauge scale: MPa. 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 | GFR600 · PT1" · 40 µm |
|---|---|
| One size down | GFR400 |
| Add lubrication | GFC600-25 (two-unit set) |
Supplies filtered, regulated low-pressure air to the pneumatic actuators that stroke large butterfly and knife-gate valves on a treatment plant's clarifier and filter lines, with the automatic drain keeping condensate out of the actuator supply.
Feeds the low-pressure air knives that dry and clear bottles and cans on a filling-line conveyor; the 40 um element protects the nozzles and the automatic drain handles the condensate the cooler compressed air drops.
Regulates the carrier air for a dilute-phase conveying line moving plastic pellets from silo to machine hopper, filtering the compressor supply ahead of the circuit and holding the reduced line pressure the transfer needs.
Size 600 with a 1 in port is the largest step in the GFR range; move between 200, 300, 400 and 600 to match the air demand of the line, and remember flow is published as curves, not a single rating - send us your demand and we will confirm the right size before you order. This configuration is the low-pressure type with an automatic drain, a 40 um element, a square MPa gauge and NPT thread, and no mounting bracket; a 5 um (W) element, a different gauge scale or thread, or a bracket can be ordered as options.
Quick checklist
The aluminium-alloy bowl on the GFR600 suits harsher environments than a PC bowl. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes GFR-series flow as curves rather than a single rated figure, so we do not quote a number here. Send us your line pressure, set pressure and air demand, and we will confirm from the datasheet whether this size 600, 1 in NPT low-pressure unit is correctly sized for your application before you order.
The A is the drain code: this unit has an automatic drain that discharges collected condensate from the aluminium bowl without manual attention. Manual (M) and differential-pressure (blank) drains are the alternatives in the family, and the 40 um element is standard - the 5 um grade is ordered with the W code.
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.