The AirTAC GFR30008LC1TK AirTAC Filter Regulator NPT1/4 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 PT1/4" 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 GFR30008LC1TK is a size-300 GFR filter regulator: water and particulate filtration plus pressure regulation combined in one body. This configuration has 1/4 in NPT ports, the low-pressure regulator type, a 40 um standard filter element, and a differential-pressure drain that bleeds collected condensate automatically whenever the pressure drop across the element rises. A round pressure gauge scaled in MPa is fitted, a reverse/check valve is built in to hold downstream settings, and the mounting bracket is included. The polycarbonate bowl lets you see the condensate level at a glance.
This is a genuine AirTAC part. The GFR line is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, PT as the standard thread and G or NPT as order options, a choice of differential-pressure, automatic or manual drain, a 5 um element (code W) where finer filtration is needed, and gauge or no-gauge variants. Flow figures for this series are published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR30008LC1TK AirTAC Filter Regulator NPT1/4 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (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 | PC |
| 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.
| GFR300 | G-series filter regulator, 300 body — sets the port range. |
|---|---|
| 08 | Port size PT1/4". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| (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 | GFR300 · PT1/4" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
On a fixture line where workpieces must be held at a reduced set pressure to avoid marking, the low-pressure regulator type lets the operator dial in a gentler clamp force, while the 40 um element keeps rust and pipe scale out of the clamp cylinders.
Feeding a robotic gripper manifold, the GFR30008LC1TK filters condensed water and particles from the shop air, holds a stable low set pressure for delicate parts, and the built-in check valve helps keep the gripper setting steady if upstream supply dips.
On a lab bench rig running instrument-grade pneumatic tests, the 40 um element and visible polycarbonate bowl protect sensitive test components from water and dirt, and the MPa gauge gives a direct, readable set point at the bench.
Start with the port and size step: size 300 with 1/4 in NPT ports suits compact supply lines, but always size against the air consumption of the downstream equipment rather than the port alone. Because flow for this series is published as curves, not a single rated figure, send us your demand and we will confirm the right size before you order. This unit is the low-pressure regulator type; its exact regulation range is not published in the standard table, so confirm it with us if your set point is critical. The differential-pressure drain is the default and needs no operator attention; an automatic drain (code A) or manual drain (code M) can be ordered instead. The 40 um element is standard - specify code W for the 5 um grade if finer filtration is required. Thread here is NPT; PT is the AirTAC standard and G (BSPP) is also an order option. A bracket is included with this model, and the fitted round gauge reads in MPa (psi and bar scales are available).
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. 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 characteristic curves, not as a single rated number, so we do not quote a figure here. Send us your line pressure and the air demand of your equipment and we will confirm the sizing against the datasheet curves on request.
This unit's differential-pressure drain (the default) discharges collected condensate automatically when the pressure drop across the 40 um element rises, so no manual bleeding is needed in normal service. If you prefer scheduled draining or a fully automatic float arrangement, manual-drain (M) and automatic-drain (A) versions of the same size can be ordered.
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.