The AirTAC GFR30010 AirTAC Filter Regulator, NPT3/8, 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 PT3/8" 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 GFR30010 is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in a single body. This unit is the low-pressure type (code L) with a 3/8 in NPT thread, a 40 um filter element and a differential-pressure drain that discharges accumulated condensate when the pressure differential across the unit changes, such as at shut-down. A round gauge scaled in psi is fitted, and a reverse/check valve (code K) holds the downstream setting when the upstream supply is interrupted. The polycarbonate bowl carries a maximum inlet pressure of 1.0 MPa (145 psi) and an operating temperature of -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, in PT (standard), G (BSPP) or NPT thread, with manual, automatic or differential-pressure drains, 40 um or 5 um (W) filtration, square or round gauges scaled in MPa, psi or bar, and an optional mounting bracket. Flow figures are published as curves rather than a single rating, so tell us your application and we will confirm the sizing and datasheet details on request.
| Model | GFR30010 AirTAC Filter Regulator, NPT3/8, Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (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, psi 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. |
|---|---|
| 10 | Port size PT3/8". 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 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 · PT3/8" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Feeds filtered, regulated air to the pick-and-place cylinders on a carton-forming line. The 40 um element strips water and pipe scale before they reach the valve stack, while the fitted check valve holds the downstream setting through brief supply interruptions.
Conditions the shop-air feed to a bench manifold serving lab instruments that need clean, steady low-pressure air. The low-pressure regulator type suits circuits run below standard settings, and the psi-scaled round gauge gives a direct local reading.
Supplies filtered, regulated air to spray guns along a conveyorised finishing booth. The 40 um element keeps moisture and particulate out of the gun and finish, and the regulator lets each zone be set independently at the point of use.
Choose the size by port and flow: size 300 with a 3/8 in port sits mid-range in the GFR line, which steps from 1/8 in (size 200) up to 1 in (size 600). Pick the drain to match your maintenance practice - differential-pressure (this unit) needs no day-to-day attention, automatic (A) drains continuously, and manual (M) drains only when opened. Filter grade is 40 um as standard; specify W for 5 um when finer particulate removal matters. This unit is the low-pressure type (L) for circuits that run below standard regulator settings; the exact adjustment range is not published, so confirm it with us. Gauges come as an embedded square gauge or an external round gauge scaled in MPa, psi or bar. Thread is PT as standard, with G (BSPP) and NPT as order options; a bracket is optional (J = none, as here). Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application before ordering.
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.
Flow for the GFR series is published as curves, not as a single rated figure, so we do not quote a number here. Send us your application details - supply pressure, downstream demand and line configuration - and we will confirm the sizing from the AirTAC datasheet on request.
It marks the low-pressure regulator type, intended for circuits that run below standard regulator settings. The exact adjustment range for the low-pressure type is not published in the catalogue, so confirm it with us before ordering. The rest of the code decodes as: size 300, NPT3/8 thread, differential-pressure drain, 40 um element, no bracket, round gauge scaled in psi, and a fitted reverse/check valve.
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.