The AirTAC GR60025LC3TK AirTAC Air Pressure Regulator NPT1 (1 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 PT1" 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 GR60025LC3TK is an AirTAC GR600 air pressure regulator in the largest 600 size, supplied with a 1 in NPT thread. This is the low-pressure (L) type, set up to regulate downstream pressure up to 0.4 MPa, with a maximum working (inlet) pressure of 1.0 MPa (145 psi). The code confirms a round external gauge with a bar scale, a built-in reverse (check) valve so downstream pressure is held if the upstream supply drops, and a mounting bracket included; the GR600 can also be panel-mounted. As a pure regulator it performs pressure regulation only - there is no filter, no bowl and no lubricator in this unit. Operating temperature range is -20 to 70 C, wider than the rest of the G-series.
This is a genuine AirTAC part from the GR family, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in up to 1 in, in standard and low-pressure types, with gauge, thread and check-valve options. Flow for the GR600 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 | GR60025LC3TK AirTAC Air Pressure Regulator NPT1 (1 in) |
|---|---|
| Series | GR600 pressure regulator |
| Port size | PT1" (NPT thread) |
| Regulating range | 0.05 - 0.4 MPa (7 - 58 psi) |
| Pressure type | Low-pressure type |
| Bracket | Fixing bracket included |
| 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. |
|---|---|
| 25 | Port size PT1". 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. |
| (blank) | Fixing bracket included. |
| (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 · PT1" · 0.05 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size down | GR400 |
| Line order | Filter first, then regulator, then lubricator |
On a machining or assembly line where workpieces are held by air clamps that must not be over-pressured, this low-pressure GR600 regulates the clamp circuit at up to 0.4 MPa, and the check valve holds clamp pressure if the main supply drops.
Film tensioning and sealing stations on packaging lines run at modest pressures; a 1 in low-pressure regulator at the machine inlet keeps that circuit stable while the round bar gauge gives operators a local reading.
Where a plant air header drops to a low-pressure zone feeding multiple take-offs, the 600-size 1 in connection matches the main piping, and the reverse valve isolates the zone from upstream fluctuations.
Start with the port step: the 600 size carries the 1 in connection, the largest in the GR range, so size up from 200/300/400 when your line's flow demand and piping call for it - flow is published as curves, not a single rating, so let us confirm the fit against your application. This unit is the low-pressure (L) type, regulating up to 0.4 MPa; if your circuit needs the full 0.05-0.9 MPa range, choose the standard GR600 instead. The round gauge here reads in bar; MPa and psi scales are the other catalogue options, and an embedded square gauge is the alternative style. Thread is NPT on this code - PT (standard) and G (BSPP) are the other orderable options. A mounting bracket is included, and the GR can also be panel-mounted; the K code adds the reverse/check valve, which is what you want on circuits that must hold downstream pressure on supply loss. Ask us to confirm sizing from the datasheet before ordering.
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 GR600 flow as curves, not as a single rated figure, so we do not quote a number here. Tell us your line pressure, set pressure and expected air demand, and we will confirm the sizing against the datasheet on request before you order.
The L in GR60025LC3TK marks the low-pressure type, which regulates up to 0.4 MPa instead of the standard 0.05-0.9 MPa range - choose it when your circuit must never see higher pressure. The K means a reverse (check) valve is fitted, so downstream pressure is held if the upstream supply is lost. The C3 gives you the external round gauge with a bar scale.
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.