Aro-Flo Series Air Line Regulator, 1/8 NPT Ports, 0-140 PSI PSI Spring Range, 45 SCFM Flow Rating

Description & Features

Designed to fit into compact setups this 1000 Series regulator accommodates 1/8 NPT ports and guarantees a flow rating of 45 SCFM. This regulator from Ingersoll-Rand Industrial U.S. Inc. boasts robust construction with an aluminum body and brass & nitrile valve.

Air line regulators provide controlled consistent air pressure as required for specific pneumatic equipment connected to the air system. This model features a standard adjustment range of 0-140 psi ensuring reliability in various industrial applications.

All 1000 Series Aro-Flo regulators come with a gauge for precise pressure monitoring and non-relieving models are available for applications where downstream overpressure venting is undesirable. Modular spacer kits enable easy assembly in different configurations ensuring flexibility in diverse setups.

The Aro-Flo Series Air Line Regulator 1/8 NPT Ports 0-140 PSI Spring Range 45 SCFM Flow Rating includes a nitrile and acetal diaphragm steel springs and polycarbonate gauge cover providing durability for intensive industrial environments. The maximum inlet pressure is rated at 250 psi with a temperature range of 23-140F.

MPN: R37111-100

Supplier Part Number: R37111-100

Specifications

Adjustment
Standard Knob
Body Material
Aluminum
Connection Type
NPT
Dimensions
1.58 in W x 3.56 in H
Gauge
Yes
grp Gauge Port
1000 Through 3000 Series: 1/8 NPT, Super-Duty Series: 1/4 NPT
grp Materials
1000 Series: Nitrile + Acetyl Diaphragm, Aluminum Body, Brass + Nitrile Valve, Steel Springs, Nylon + Polycarbonate Gauge Cover, Acetyl Knob, Nitrile O-rings, 1500 Through 3000 Series: Nitrile + Nylon Diaphragm, Aluminum Body, Nylon + Nitrile Valve, Steel
grp Maximum Inlet Pressure
1000 Through 3000 Series: 250 psi, Super-duty Series: 300 psig
Regulator Type
Relieving
Series
1000 Series
Softgoods Material
Acetal/Nitrile

Product Questions & Answers (1)

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Question by: Neil B on Mar 18, 2026, 5:58 PM
got a little air setup with 1/8 npt lines. is this regulator the right size and what kinda pressure can i dial in
Answer by: Customer Support on Mar 20, 2026, 10:12 AM
For compact air hydraulic connections, it matches up with 1/8 NPT ports and it adjusts across a 0 to 140 psi spring range. It also comes with a gauge, so you can set and keep an eye on the downstream pressure without guessing.

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