The AirTAC GR60020LJC3TK AirTAC Air Pressure Regulator, NPT 3/4 in is a genuine G-series air pressure regulator. It holds a stable downstream pressure over the range 0.05 - 0.4 MPa (7 - 58 psi) with PT3/4" ports, and ships with a pressure gauge. A regulator does not filter the air — put a GF filter upstream, or use a GFR filter regulator, when water and particulate must also be removed.
The GR60020LJC3TK is an AirTAC GR-series air pressure regulator: it does one job, holding downstream pressure steady, and it carries no filter, no bowl and no lubricator. This is the 600 size with a 3/4 in NPT port, built as the low-pressure type (code L) with a regulation range up to 0.4 MPa, so it suits circuits that need a gentle, stable supply rather than full line pressure. It comes fitted with an external round gauge scaled in bar, and a reverse/check valve (code K) that holds the set downstream pressure if the upstream supply drops. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -20 to 70 C, wider than the rest of the G family.
This is a genuine AirTAC part. The GR line runs from size 200 up to 600, with port options in PT (standard), G and NPT, gauge scale choices, an optional reverse/check valve, and panel mounting as well as bracket mounting. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GR60020LJC3TK AirTAC Air Pressure Regulator, NPT 3/4 in |
|---|---|
| Series | GR600 pressure regulator |
| Port size | PT3/4" (NPT thread) |
| Regulating range | 0.05 - 0.4 MPa (7 - 58 psi) |
| Pressure type | Low-pressure type |
| Bracket | Supplied without bracket |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -20 to +70 °C |
| Pressure gauge | Fitted — round, bar scale |
| Reflux valve | Fitted (reverse flow permitted) |
| Mounting | Panel mounting; optional fixing bracket |
Specifications follow the official AirTAC G-series air-preparation data. Note the GR temperature range is -20 to +70 °C, wider than the other G-series units. A regulator has no bowl and no filter element, so there is no filtering grade. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GR600 | G-series pressure regulator, 600 body — sets the port range. |
|---|---|
| 20 | Port size PT3/4". This body offers 20 = PT3/4", 25 = PT1". |
| L | Low-pressure type — 0.05 - 0.4 MPa (7 - 58 psi). 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. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
Field order is size, port, type, bracket, gauge, gauge shape, scale, thread, reflux — a blank position takes the default. Example: GR300-08LNK is a 300 body, PT1/4", low-pressure type, no gauge, with 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 rather than from a single rated figure.
| This model | GR600 · PT3/4" · 0.05 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size down | GR400 |
| Line order | Filter first, then regulator, then lubricator |
Pneumatic clamps that must grip without crushing thin-walled parts run best at reduced pressure. This regulator holds a steady low setting on the clamp circuit of a CNC fixture, and the check valve keeps the clamp from relaxing if the shop air main dips during a shift.
Bench-scale reactors, agitator seals and pneumatic test rigs in a laboratory often need air well below main line pressure. The low-pressure type with a bar-scaled gauge lets a technician set and read a gentle, repeatable supply for sensitive instruments.
Cylinders and air bellows on a carton-forming or wrapping line frequently run at reduced pressure to protect product and tooling. A 3/4 in regulator sized to the line feed keeps actuator forces consistent across the machine, with the check valve holding settings through brief upstream pressure drops.
Start with the port step: the 600 size takes a 3/4 in line, and larger sizes carry more flow - match the size to what the circuit actually passes rather than oversizing on guesswork. This unit is the low-pressure type (L), regulated up to 0.4 MPa; if your process needs settings above that, the standard GR type is the correct choice instead. The trailing T in the code means an NPT thread; PT is the standard thread and G is also available to order. The C in the code selects the external round gauge with a bar scale (psi and MPa scales exist too), and K fits the reverse/check valve that prevents downstream pressure decaying on an upstream drop. GR is panel-mountable, and a mounting bracket is optional (this code, J, is supplied without one).
One honest note on sizing: AirTAC publishes GR flow as curves, not as a single rated number, so we cannot quote you a rated flow figure. Send us your application details and we will confirm the datasheet curves against your required flow before you order.
Quick checklist
The reflux valve lets air flow back through the regulator, which is useful when downstream volume must vent quickly. A regulator does not remove water or particulate; that is the filter's job.
AirTAC publishes GR-series flow as performance curves, not as a single rated figure, so there is no one rated flow number we can honestly quote. The 600 size with its 3/4 in port is the largest GR size, but the right way to size it is against your actual demand. Send us your application details and we will confirm the datasheet flow curves for this exact model on request.
L marks the low-pressure regulator type: its adjustment range tops out at 0.4 MPa instead of the standard GR range, which suits circuits that must never see full line pressure. C selects the external round gauge scaled in bar, and K fits a reverse/check valve that holds your set downstream pressure if the upstream supply falls. This unit is supplied without a mounting bracket (J) and with an NPT thread (T); PT is the standard thread and G is available to order.
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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.