The AirTAC GFR60025LNTK AirTAC Filter Regulator 1 in NPT 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 GFR60025LNTK is an AirTAC GFR600 low-pressure filter regulator: one body that removes water and particulate from compressed air and then regulates downstream pressure. This 600-size unit is threaded 1 in NPT, carries the standard 40 um filter element, drains condensate by differential pressure, and has a reverse/check valve fitted so downstream pressure is held if the upstream supply drops. It is supplied without a gauge and includes a mounting bracket. The aluminium alloy bowl suits this large frame size, and the low-pressure (L) type is intended where the working band sits below the standard regulator range.
This is a genuine AirTAC part in the GFR family, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in up to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um (W) filtration, gauge options, PT/G/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 rating, so ask us to confirm sizing and the low-pressure regulation band against your application before ordering.
| Model | GFR60025LNTK AirTAC Filter Regulator 1 in NPT 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 | Not fitted |
| 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. |
| N | No pressure gauge (N). |
| (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. |
| 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) |
Feeds large-bore clamping cylinders on panel saws and CNC routers, filtering line water and holding a steady low-pressure clamp force, with the check valve keeping clamps engaged during supply dips.
Conditions and regulates air for 1 in-line conveyor gate and diverter cylinders, where the differential-pressure drain sheds condensate automatically as the filter loads up during long production runs.
Sits at the take-off point of a main distribution header, delivering filtered, regulated air at low pressure to a workshop section, with the reverse valve preventing backflow into the header.
Start with the port step: this unit is 1 in NPT, the largest in the GFR range, so match it to line sizes and expected air demand one step up if your flow is near a smaller unit's limit. Choose the drain next: this configuration uses the differential-pressure drain (the default), which discharges condensate when the pressure drop across the filter rises; automatic (A) and manual (M) drains are available if you prefer hands-off or scheduled draining. Filtration is the standard 40 um element; specify code W for 5 um where downstream equipment needs finer protection. No gauge is fitted with code N, and gauge type and scale are selectable on gauge-fitted variants. Thread is NPT here; PT is the catalogue standard and G (BSPP) is also an order option. A bracket is included. Because flow is published as curves rather than a single rated figure, and this is the low-pressure type whose exact regulation band is not published, ask us to confirm both against your application before ordering.
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 series as curves, not as a single rated number, and this is the low-pressure (L) type whose exact regulation band is not listed on our sheet, so we do not quote a figure here. Send us your line size, air demand and working pressure and we will confirm the flow curve and regulation range from the datasheet on request before you order.
GFR is the filter-regulator family, 600 is the size frame, 25 is the 1 in port, T is the NPT thread, L is the low-pressure regulator type, N means no gauge is fitted, and K means a reverse/check valve is installed. The drain is the differential-pressure type (blank position) and filtration is the standard 40 um element. If you need a pressure gauge, choose a variant without the N code; gauge type and scale are then selectable.
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.