The AirTAC GFR600C25LJNWTK 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 GFR600C25LJNWTK is a size-600 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration carries a 1 in NPT port, a 5 um filter element (the finer of the two published grades), a differential-pressure drain that bleeds collected condensate automatically when the pressure differential rises, and a built-in reverse/check valve that holds downstream pressure when the supply is lost. It is the low-pressure regulator type, is supplied without a gauge and without a mounting bracket, and the metal bowl at size 600 is aluminium alloy. Maximum working (inlet) pressure is 1.0 MPa (145 psi); operating temperature is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with a choice of ports, PT (standard), G or NPT threads, 40 um or 5 um filtration, differential-pressure, automatic or manual drains, standard or low-pressure regulation, gauge options and bracket choices. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR600C25LJNWTK 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) |
Installed where the 1 in main distribution line enters a production hall, the GFR600C25LJNWTK strips water and 5 um-scale particulate from the plant air supply and holds a steady reduced pressure for the whole downstream circuit, while the check valve keeps the circuit charged during supply dips.
On a palletizing line with air-driven diverters, pushers and gate cylinders fed from a large-bore header, this filter regulator cleans the supply and stabilizes actuator pressure, and the differential-pressure drain clears accumulated condensate without a scheduled manual blow-down.
Supplying positioner and diaphragm-actuator control air to process valves at a water treatment or chemical dosing skid, the 5 um element protects the small internal passages of the positioners, and the low-pressure regulator type suits circuits run at reduced pressure.
Start with the port step: this unit is the 1 in NPT connection at size 600, the largest GFR frame, so match it to the main air line feeding a substantial downstream demand. Filtration is set at 5 um here (code W); the standard grade is 40 um, so choose the finer element where downstream valves and instruments need cleaner air. Drain is the differential-pressure type (the default); automatic (A) and manual (M) drains are available if your maintenance routine suits them better. The low-pressure regulator type (L) is built for reduced-pressure circuits - its exact adjustment range is not published, so confirm it with us. No gauge is fitted (code N); gauge and scale options exist on other variants. Thread is NPT on this unit, while PT (standard) and G are catalogue alternatives, and the J code means no mounting bracket is included. 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 flow for the GFR series as curves, not as a single rated number, so we do not quote a figure that is not in the datasheet. Tell us your line size and downstream demand and we will confirm the flow curve and sizing against your application on request before you order.
The N in the model code means no pressure gauge is fitted, so read downstream pressure with your own gauge or specify a gauge-equipped GFR variant instead. The K code means a reverse/check valve is built in: it holds downstream pressure if the upstream supply is interrupted. The L code marks the low-pressure regulator type, whose exact adjustment range we confirm on request.
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.