The AirTAC GFR300C15AJC3T AirTAC Filter Regulator NPT1/2 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 GFR300C15AJC3T is a size 300 filter regulator: water and particulate filtration plus downstream pressure regulation combined in a single body, with a 1/2 in NPT port. This configuration carries the standard 40 um filter element and an automatic drain, so collected condensate is expelled from the polycarbonate bowl without manual attention. The regulator is the standard type with an adjustment range of 0.15-0.9 MPa (20-130 psi), and the fitted external round gauge reads in bar so the set pressure is visible at a glance. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). No mounting bracket is included with this variant.
This is a genuine AirTAC part from the GFR filter-regulator family, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in. Across the family you can order manual or differential-pressure drains, a 5 um element (code W), square or round gauges with MPa, psi or bar scales, G (BSPP) or NPT threads in place of the PT standard, and a bracket where needed. 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 | GFR300C15AJC3T AirTAC Filter Regulator NPT1/2 |
|---|---|
| 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) |
Feeding clamping cylinders and pneumatic press heads on a production line, where one combined unit filters the supply air and holds a steady regulated pressure so clamp force stays repeatable from cycle to cycle.
Supplying clean, regulated air to the cylinders and air jets on a carton-forming or wrapping conveyor, with the automatic drain handling condensate on a line that runs unattended through shifts.
A wall-mounted drop at a maintenance bench or assembly cell, giving technicians filtered, gauge-monitored regulated air for impact wrenches, air ratchets and other hand-held tools on a 1/2 in drop leg.
Start with the port and size step: size 300 with a 1/2 in NPT port sits in the middle of the GFR range (200/300/400/600), and the right step depends on the air demand of the line downstream - step up a size if your circuit needs more flow capacity, but note that flow for this series is published as curves, not a single rating, so ask us to confirm sizing against the application before ordering. Next choose the drain: this unit has an automatic drain, which suits unattended or hard-to-reach installations; manual and differential-pressure drain versions are available in the family. The standard element is 40 um; specify the W suffix if your application needs the finer 5 um grade. Gauge choices are the embedded square gauge or the external round gauge fitted here, with MPa, psi or bar scales - this unit reads in bar. Thread is NPT on this variant; PT is the AirTAC standard and G (BSPP) is also an order option. A mounting bracket is optional; this code is supplied without one.
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 performance curves rather than a single rated figure, so there is no one rated flow number we can quote for this unit. Send us your application details and we will confirm the datasheet flow curve and help you check the size 300 / 1/2 in port against your air demand before you order.
The A in the code GFR300C15AJC3T means the bowl drain is automatic: condensate collected during filtration is expelled without anyone opening the drain, which suits installations that are hard to reach or run unattended. The family also offers a manual drain (code M) for points where an operator drains the bowl as part of a routine, and a differential-pressure drain (the default) as a middle option. Regulation range differs by drain type: automatic and differential-pressure versions adjust 0.15-0.9 MPa (20-130 psi), while manual-drain versions adjust 0.05-0.9 MPa (7-130 psi).
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.