The AirTAC GR600-25L AirTAC Low-Pressure Air Regulator, G1 Port 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 AirTAC GR600-25L is a low-pressure air pressure regulator in the 600 size, fitted with a 1 in G-thread port. It reduces and holds a stable downstream air pressure, adjustable up to 0.4 MPa, making it the right choice for circuits that must never see full line pressure. This configuration includes an external round pressure gauge with a psi scale, and no mounting bracket; the GR series is also panel-mountable. It regulates pressure only - it does not filter water or particulate and does not lubricate the air.
This is a genuine AirTAC part. The GR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, in standard and low-pressure (L) types, with gauge, bracket, thread (PT standard, G and NPT as options) and reverse-valve choices. Rated flow is published as curves rather than a single figure, so ask us and we will confirm the datasheet and sizing figures for your application on request.
| Model | GR600-25L AirTAC Low-Pressure Air Regulator, G1 Port |
|---|---|
| Series | GR600 pressure regulator |
| Port size | PT1" (G (BSPP) 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, psi scale |
| Reflux valve | Not fitted |
| 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. |
| 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. |
| G | G (BSPP) thread. PT is the default; G is BSPP and T is NPT. |
| (blank) | No reverse-flow valve (the default). |
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 |
Bagging and wrapping machines often need their sealing or forming air held well below main line pressure. The GR600-25L regulates a 1 in branch down to the low setpoint the sealing cycle requires, and the round psi gauge lets the line technician read and verify the setting directly.
Big diaphragm and pilot-operated process valves need a steady, limited pilot supply to shift predictably. Fed from a 1 in main, this low-pressure regulator holds the pilot circuit at a safe setpoint up to 0.4 MPa, protecting the valve actuation from swings in the plant air main.
Air-jet weaving and fabric handling lines use gentle, precisely limited air for tension rollers and thread guidance. The GR600-25L takes the 1 in machine feed down to the low working pressure the process calls for, with the psi-scaled gauge giving operators a repeatable reference for changeovers.
Start with the port step: the 600 size carries a 1 in port, the largest in the GR range, so size up from 400 when your line's flow demand points to a 1 in connection - we can confirm the flow curve against your consumption before you order. Choose the L low-pressure type, as here, when the working pressure must stay at or below 0.4 MPa; choose the standard type for the full 0.05-0.9 MPa range. Then pick the gauge: embedded square or external round, with MPa, psi or bar scales - this unit carries a round psi gauge. Thread is PT as standard, with G (BSPP) and NPT as orderable options; this unit is G-threaded. A bracket is optional (this configuration has none) and the GR can also be panel-mounted. A reverse/check valve (K) can be fitted if backflow protection is needed.
Quick checklist
Without a reflux valve, air cannot flow back through the regulator — order the K option if reverse flow is required. A regulator does not remove water or particulate; that is the filter's job.
AirTAC publishes regulator flow as curves, not as a single rated figure, so we do not quote a l/min, m3/h or SCFM number for this unit. Tell us your line pressure, setpoint and expected air consumption, and we will confirm the datasheet flow curve and check the sizing against your application on request before you order.
The L type in the code limits the adjustment range to pressures up to 0.4 MPa, which suits circuits that must never be set high - pilot supplies, sealing air and similar low-pressure duties. The standard GR type covers the wider 0.05-0.9 MPa range. Both share the same 1.0 MPa (145 psi) maximum inlet pressure and the GR's -20 to 70 C operating range.
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.