The AirTAC GFR600-25T 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 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 GFR600-25T is an AirTAC GFR-series filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This size 600 unit is built around a 1 in NPT port and carries the standard 40 um filter element. The bowl is aluminium alloy (size 600 construction) with a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the element rises. The regulator is the low-pressure type, and this configuration ships with a round MPa-scale gauge fitted, a reverse/check valve installed, and a mounting bracket included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, in PT, G and NPT threads, with manual, automatic or differential-pressure drains, a 40 um standard or 5 um (W) filter element, square or round gauges in MPa, psi or bar scales, and a low-pressure regulator option. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR600-25T 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 | Differential-pressure drain |
| Bowl material | Aluminium alloy |
| Pressure gauge | Fitted — round, MPa scale |
| Reflux valve | Fitted (reverse flow permitted) |
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". |
| (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. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. 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. |
| K | Reverse-flow (reflux) valve fitted. |
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) |
Automotive refinish and furniture finishing booths run atomizing air at modest set pressures. This low-pressure-type filter regulator conditions booth air, removes water and particulate ahead of the guns, and the round MPa gauge gives the operator a direct set-pressure readout.
A CNC router or nesting cell with pneumatic hold-down clamps and tool-change cylinders needs clean, regulated air at the cell drop. The 1 in NPT port suits a main drop feeding the cell, the 40 um element protects the valves, and the check valve holds clamp pressure if the upstream supply dips.
Filling, capping and conveyor diverting on a bottling line draws from a shared actuator manifold. This unit filters and regulates the supply at the manifold inlet, the differential-pressure drain keeps condensate out of the circuit during production, and the included bracket fixes the unit to the machine frame.
Start with the port: this unit is the size 600 body with a 1 in NPT port, the largest step in the GFR range - step down to 200/300/400 if your line runs smaller ports and lower air demand. Drain choice matters: differential-pressure (this unit) drains on element loading, automatic (code A) drains on a timer-free cycle, and manual (code M) needs an operator. Filter grade is 40 um standard; choose 5 um (code W) if downstream valves or instruments need finer protection. The round gauge here reads in MPa; psi and bar scales are orderable, and an embedded square gauge is the standard alternative. Thread: NPT as coded, with PT and G available to order. A bracket is included, and the reverse/check valve (K) holds downstream pressure if upstream supply drops.
One honest note on sizing: AirTAC publishes flow for this family as curves, not a single rated figure, and the low-pressure regulator type has no published adjustment range on our sheet. Tell us your line pressure and demand and we will confirm the datasheet figures before you order.
Quick checklist
The aluminium-alloy bowl on the GFR600 suits harsher environments than a PC bowl. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR family as performance curves rather than a single rated figure, so we do not quote a rated flow number. Send us your line pressure and air demand and we will confirm the datasheet curve figures for your application before you order.
This unit's blank drain code is the differential-pressure type: condensate collected in the aluminium bowl is discharged automatically when the pressure differential across the 40 um element rises. If you prefer a set-cycle drain choose code A (automatic), or code M for a manual drain operated by hand. All three are catalogue options on this family.
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.