The AirTAC GFR30015MJNT AirTAC Filter Regulator NPT1/2 Manual Drain 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 PT1/2" ports, a manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR30015MJNT is a 300-size filter regulator that cleans compressed air and holds downstream pressure in a single body. It removes water and particulate down to 40 um with a manual drain bowl in PC (polycarbonate), and its standard regulator adjusts outlet pressure from 0.05 to 0.9 MPa (7-130 psi). The 1/2 in NPT port suits main lines and larger drops, maximum inlet pressure is 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C (non-freezing). No gauge is fitted with this code and no mounting bracket is included.
This is a genuine AirTAC part, one configuration within the GFR300 series. The GFR family is also available in 200, 400 and 600 sizes, with other port sizes, PT or G threads, automatic or differential-pressure drains, a 5 um (W) filter grade, gauge options and bracket choices. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing figures on request.
| Model | GFR30015MJNT AirTAC Filter Regulator NPT1/2 Manual Drain |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Not fitted |
| 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 0.05 - 0.9 MPa (7 - 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. |
|---|---|
| 15 | Port size PT1/2". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| N | No pressure gauge (N). |
| (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. |
| T | NPT 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 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Installed on a 1/2 in compressed-air distribution line feeding a production hall, it strips bulk water and 40 um particulate from the supply and lets maintenance set a stable working pressure for the whole drop.
Mounted ahead of a machining centre's pneumatic panel, it cleans incoming shop air and holds the regulated pressure that pneumatic clamps, tool changers and chip-clearing jets depend on.
Fitted at the inlet of a packaging or palletising line, it removes condensate and pipe scale before the air reaches the cylinders and valves, with the regulator set to the pressure the line was designed around.
Choose GFR300 when your line sits between the smaller 200/300 and larger 400/600 sizes; the 1/2 in NPT port here matches heavier air demand, and we will confirm the flow curve against your application before you order. Pick the manual drain (this code) when an operator can bleed the bowl routinely; choose automatic or differential-pressure drain codes if unattended draining matters. The standard 40 um element suits general plant air; specify the W code for 5 um when downstream equipment needs finer filtration. This unit ships without a gauge - add a gauge code if you want local pressure indication - and without a bracket. NPT is the thread here; PT is the catalogue standard and G (BSPP) is also an order option.
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 GFR300 series as curves rather than a single rated number, so no rated flow figure is quoted here. Tell us your line pressure and air demand and we will confirm the sizing from the datasheet curves on request before you order.
In the code GFR30015MJNT, M is the manual drain (an operator drains the PC bowl rather than relying on an automatic or differential-pressure drain) and N means no gauge is fitted. If you want local pressure indication or self-draining operation, ask us for the corresponding GFR300 code options.
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.