The AirTAC GFR600C25LF3TK 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 See datasheet 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 GFR600C25LF3TK is a size 600 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration takes a 1 in NPT port, carries the standard 40 um filter element, drains condensate by differential pressure, and is the low-pressure regulator type. It is fitted with an embedded square gauge scaled in bar, a reverse/check valve, and a mounting bracket. The size 600 bowl is aluminium alloy. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing).
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, and is ordered with choices of drain type (differential-pressure, automatic or manual), filter grade (40 um standard, 5 um with code W), gauge scale (MPa, psi or bar), thread (PT standard, G or NPT to order), bracket and reverse/check valve. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application on request.
| Model | GFR600C25LF3TK AirTAC Filter Regulator NPT1 Low-Pressure |
|---|---|
| Series | GFR600 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard 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 — factory standard, Factory standard 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. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). 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. |
|---|---|
| C2 | Port size See datasheet. 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)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT 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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR400 |
| Add lubrication | GFC600-C2 (two-unit set) |
At the 1 in main drop feeding a hall of air tools and cylinders, this unit filters bulk water and scale from the header supply and holds a steady low regulated pressure to the distribution legs, with the bar-scale gauge giving operators a local reading at the drop.
Processes such as powder conveying, aeration manifolds and low-pressure actuated valve banks run at reduced pressures; the low-pressure regulator type on this unit is intended for that duty, while the 40 um element protects the loop's valves from particulate carryover.
On a system where several branches share a header, the fitted reverse/check valve on this 1 in filter regulator prevents backflow through the branch when an adjacent branch is vented or a compressor stage unloads, keeping the regulated branch isolated.
Step up through the GFR sizes (200, 300, 400, 600) and ports (1/8 in to 1 in) against the flow your line needs - the 600 size with a 1 in port is the largest step in the family. Choose the drain to suit access: differential-pressure (this model, drains as pressure drop builds), automatic for unattended condensate removal, or manual where someone checks the bowl regularly. The 40 um element on this unit suits general plant air; specify code W for 5 um where finer filtration is needed. Pick the gauge scale you want to read (this unit is square, bar; MPa and psi scales exist), PT as the standard thread or G/NPT to order, and add or omit the bracket and check valve as the install requires. Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application before ordering.
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 flow as curves, not as a single rated figure, so we do not quote a rated flow, Cv or SCFM number for this unit. Send us your application details and we will confirm the flow and datasheet figures for the GFR600 size at a 1 in port on request before you order.
The L in the code marks the low-pressure regulator type, intended for duties regulated below the standard range; the exact adjustment range for this type is not published in the catalogue, so we confirm it on request. The drain is differential-pressure (no drain letter in the code): condensate is discharged as the pressure differential across the bowl builds, with no manual intervention.
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.