The AirTAC GFR600-20 AirTAC Filter Regulator PT3/4, 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 PT3/4" 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 GFR600-20 is a size-600 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is the low-pressure type, fitted with a 40 um standard filter element and a manual drain bowl, so condensate is released by hand rather than automatically. The 3/4 in PT port suits larger main air lines, and the unit carries a round pressure gauge with a psi scale plus a built-in reverse (check) valve. No mounting bracket is included with this code.
This is a genuine AirTAC part. The GFR series is available in sizes 200, 300, 400 and 600 with 1/8 in to 1 in ports, a choice of PT, G or NPT thread, manual, automatic or differential-pressure drains, and a 40 um or 5 um element. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so we confirm flow and other datasheet figures on request.
| Model | GFR600-20 AirTAC Filter Regulator PT3/4, Low-Pressure |
|---|---|
| Series | GFR600 filter regulator |
| Port size | PT3/4" (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual drain |
| Bowl material | Aluminium alloy |
| 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.
| GFR600 | G-series filter regulator, 600 body — sets the port range. |
|---|---|
| 20 | Port size PT3/4". This body offers 20 = PT3/4", 25 = PT1". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 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. |
| (blank) | PT 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 | GFR600 · PT3/4" · 40 µm |
|---|---|
| One size down | GFR400 |
| Add lubrication | GFC600-20 (two-unit set) |
Feeding a workshop press or clamping fixture circuit that runs at reduced pressure, where the regulator holds a gentle, stable setting and the check valve keeps the clamp from venting if the main supply drops.
Conditioning the main 3/4 in air feed to weaving machinery: the 40 um element strips water and lint-scale particles before they reach jets and solenoid valves, with manual draining during shift checks.
Filtering and regulating the header air feeding carton-sealing and wrapping machines, with the psi-scale round gauge letting operators verify and adjust line pressure at the machine.
Size 600 with a 3/4 in PT port is the step to take when your line flow and pipe size sit above the 1/2 in class; always match the port step to the flow your application needs rather than upsizing blindly. This code fixes several choices for you: manual drain (simple and low-cost, but it must be drained by hand on a routine), 40 um standard filtration (choose the W suffix only if 5 um is required), the low-pressure regulator type, and a round gauge reading in psi. The check valve (K) holds downstream pressure if upstream supply is interrupted. Thread is PT as standard; G and NPT are order options. The exact regulation range of the low-pressure type is not published in our sheet, so ask us to confirm it against your set pressure before ordering.
Quick checklist
The aluminium-alloy bowl on the GFR600 suits harsher environments than a PC bowl. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes filter-regulator flow as performance curves, not as a single rated figure, so we do not quote a number here. Send us your line flow and pressure requirements and we will confirm the sizing from the datasheet curves before you order.
The M in the code means condensate is released by opening the drain by hand. Manual drain is the simple, economical choice where the bowl can be checked on a routine. If nobody will drain it regularly, ask us about the automatic or differential-pressure drain versions of the same GFR600 unit.
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.