The AirTAC GFR40015LF1WT AirTAC Filter Regulator NPT1/2, 5 um is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT1/2" 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 GFR40015LF1WT is an AirTAC GFR400 filter regulator: a single body that removes water and particulate from compressed air and then regulates the pressure delivered downstream. This configuration carries a 1/2 in NPT port, a 5 um filter element (code W, against the 40 um standard), the low-pressure regulator type, and a differential-pressure drain that bleeds accumulated condensate as air flows through. A square pressure gauge scaled in MPa is fitted, the polycarbonate bowl suits the 400 size, and a mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and options include automatic or manual drains, the 5 um element, alternative gauge scales and G (BSPP) or NPT threads in place of the PT standard. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing. Because AirTAC publishes flow as curves rather than a single rating, we confirm the datasheet and flow figures for your application on request.
| Model | GFR40015LF1WT AirTAC Filter Regulator NPT1/2, 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 5 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 — square, MPa 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. 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.
| GFR400 | G-series filter regulator, 400 body — sets the port range. |
|---|---|
| 15 | Port size PT1/2". This body offers 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). |
| F | Gauge shape: Square. C is round, F is square. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 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 | GFR400 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Feeding filtered, regulated air to the air cylinders of a small stamping or forming press, where the low-pressure regulator type holds a gentle, repeatable set pressure on the ram circuit.
Conditioning the air feeding carton-former, filling and sealing heads on a packaging line, with the 5 um element protecting sensitive directional valves from fine particulate.
Serving as the branch conditioning point on a multi-station assembly fixture, giving each station its own filtered, gauge-monitored pressure ahead of pick-and-place actuators.
The real choices in this family are all decodable from the code. Step through sizes 200, 300, 400 and 600 to match the port and the flow your line needs - the 400 size here carries a 1/2 in port. Drain type is a genuine decision: differential-pressure (fitted here) rides on flow, automatic drains regardless of flow, and manual needs an operator. Filter grade is 40 um standard or 5 um (W) for finer protection - this unit carries the 5 um element. Gauge scale can be MPa, psi or bar; the square gauge is embedded and an external round gauge is optional. Thread is PT as standard, with G (BSPP) and NPT as order options - this unit is NPT. The low-pressure (L) regulator type has a different adjustment range from the standard type; we confirm the exact range on request. Flow is published as curves, not a single rating, so 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. 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 GFR400 as curves, not as a single rated figure, so we do not quote a number here. Send us your line pressure, the downstream air demand and the pressure drop you can accept, and we will confirm the correct size and the datasheet figures on request.
L marks the low-pressure regulator type, rather than the standard type. It is a genuine order option within the GFR family, and its exact adjustment range is not published in the material we hold - we confirm the range on request before you order.
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.