The AirTAC GFR300C10LC3WT 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 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 GFR300C10LC3WT is a size 300 filter regulator: water and particulate filtration plus downstream pressure regulation combined in a single body. This configuration is threaded NPT3/8 (3/8 in), carries the fine 5 um filter element (code W) instead of the 40 um standard element, and uses the differential-pressure drain, which bleeds collected condensate automatically whenever the pressure differential across the bowl is high enough - no daily manual draining on continuously running lines. The regulator is the low-pressure (L) type for circuits that run at a reduced setting, and the unit is supplied with the round external gauge on the bar scale, a mounting bracket, and no reverse/check valve.
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 options for drain type, filter grade, gauge style and scale, thread form (PT standard, G and NPT to order) and bracket. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing figures for your application on request.
| Model | GFR300C10LC3WT AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| Series | GFR300 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 | PC |
| 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.
| GFR300 | G-series filter regulator, 300 body — sets the port range. |
|---|---|
| C1 | Port size See datasheet. 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)). |
| (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 | GFR300 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C1 (two-unit set) |
Feeds filtered, pressure-reduced air to the clamp and hold-down cylinders on a carton or blister packaging line, with the 5 um element protecting the directional valves from particulate carryover.
Supplies cleaned air at a low, stable setting to air-knife nozzles that strip wash water or dust from product travelling along a food or bottling conveyor.
Prepares the air supply for a machine-shop pallet-clamp or chuck-actuation circuit, where the low-pressure regulator type holds a reduced setting and the bar gauge gives the operator a local readout.
Start with the port step: this unit is 3/8 in NPT on the size 300 body; step up to size 400 or 600 if your line may grow into larger ports. Choose the filter grade deliberately - 40 um is the standard element for general plant air, while the 5 um element fitted here suits downstream components that need finer protection. Drain choice matters: differential-pressure (fitted here) suits continuously supplied lines, automatic (A) drains unattended, and manual (M) suits intermittent duty. Gauge style and scale are selectable - this unit carries the round gauge on bar; square embedded gauges with MPa, psi or bar scales are the alternative. Thread is PT as the AirTAC standard with G (BSPP) and NPT as order options, and the bracket can be omitted (code J) if panel space is tight. Because this is the low-pressure (L) regulator type, tell us your working pressure band and we will confirm the set range from the datasheet before you order - flow is published as curves, not a single rating, so ask us to check sizing against your application.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. 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 there is no one figure we can quote honestly. Tell us your line pressure, downstream demand and allowable pressure drop, and we will read the sizing off the datasheet curves and confirm it with you before you order.
The L code marks the low-pressure regulator variant, intended for circuits that run at a reduced working pressure rather than near full line pressure. The exact set range for this variant is not published as a single figure, so send us your required working pressure and we will confirm suitability from the datasheet. Everything else on this unit decodes normally: NPT3/8 ports, 5 um element, differential-pressure drain, round bar gauge and included bracket.
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.