Precision Regulators | McMaster-Carr

	Component Component


Regulator	Filter/Regulator

	Outlet Pipe Size Outlet Pipe Size

	Inlet Pipe Size Inlet Pipe Size

	Inlet Thread Type Inlet Thread Type

NPT

BSPP

	Pressure Adjustment Pressure Adjustment


Knob	Electrically Controlled

Screw

	Regulator Style Regulator Style

Relieving

Nonrelieving

	Gauge Port Pipe Size Gauge Port Pipe Size

1/8

1/4

	Maximum Pressure Maximum Pressure

	Outlet Thread Type Outlet Thread Type

NPT

BSPP

	Maximum Flow Rate Maximum Flow Rate

	Number of Gauge Ports Number of Gauge Ports

	Housing Material Housing Material

Aluminum

Zinc

Stainless Steel

	Overall Width Overall Width

	Overall Height Overall Height

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Maximum Temperature Maximum Temperature

	Maximum Pressure Regulating Maximum Pressure Regulating

	Minimum Pressure Regulating Minimum Pressure Regulating

	For Removing For Removing

Particles

Water

	Maximum Input Signal Voltage Maximum Input Signal Voltage

5V DC

10V DC

	Environment Environment

76 Products

About Air Preparation

High-Flow Precision Compressed Air Regulators

With a greater flow capacity than our standard precision compressed air regulators, use these regulators to adjust and maintain air pressure in sensitive high-flow applications where constant, consistent pressure is important. Install in your air line after filters.

Relieving regulators exhaust when the downstream pressure exceeds the set pressure.

Nonrelieving regulators do not exhaust excess downstream pressure.

BSPP threads are also known as G threads.

Pressure gauges are for use with regulators with NPT threading.

Mounting brackets (sold separately) allow you to attach the regulator to a wall or equipment.

For technical drawings and 3-D models, click on a part number.

Regulators

Regulator

Mounting Bracket

Regulators
Pipe Size						Overall							Mounting Brackets
Inlet	Outlet	Max. Flow Rate	Max. Pressure, psi	Gauge Included	No. of Gauge Ports	Wd.	Ht.	Max. Temp., °F	Regulating Accuracy	Choose a Pressure Regulating Range, psi		Each		Each
Aluminum Housing—BSPP Female Inlet and Outlet
Relieving
1/4	1/4	80 scfm @ 100 psi	250	No	2	3"	6 1/8"	160°	±0.05%	0-2, 0-15, 0-30, 0-60, 0-150	00000000	0000000	000000	000000
3/8	3/8	80 scfm @ 100 psi	250	No	2	3"	6 1/8"	160°	±0.05%	0-2, 0-15, 0-30, 0-60, 0-150	00000000	000000	000000	00000
1/2	1/2	80 scfm @ 100 psi	250	No	2	3"	6 1/8"	160°	±0.05%	0-2, 0-15, 0-30, 0-60, 0-150	00000000	000000	000000	00000
Nonrelieving
1/4	1/4	80 scfm @ 100 psi	250	No	2	3"	6 1/8"	160°	±0.05%	0-2, 0-15, 0-30, 0-60, 0-150	00000000	000000	000000	00000
1/2	1/2	80 scfm @ 100 psi	250	No	2	3"	6 1/8"	160°	±0.05%	0-60, 0-150	00000000	000000	000000	00000
Aluminum Housing—NPT Female Inlet and Outlet
Relieving
1/4	1/4	80 scfm @ 100 psi	250	No	2	3"	6 1/8"	160°	±0.05%	0-2, 0-15, 0-30, 0-60, 0-150	000000	000000	000000	00000
1/4	1/4	100 scfm @ 100 psi	250	No	2	4"	7 5/8"	200°	±0.1%	0-10, 0-30, 0-100, 0-150, 0-200	00000000	000000	00000000	00000
3/8	3/8	80 scfm @ 100 psi	250	No	2	3"	6 1/8"	160°	±0.05%	0-2, 0-15, 0-30, 0-60, 0-150	000000	000000	000000	00000
1/2	1/2	80 scfm @ 100 psi	250	No	2	3"	6 1/8"	160°	±0.05%	0-15, 0-30, 0-60, 0-150	000000	000000	000000	00000
1/2	1/2	80 scfm @ 100 psi	250	No	2	3"	6 1/8"	160°	±0.05%	0-2	0000000	000000	000000	00000
1/2	1/2	225 scfm @ 100 psi	250	No	2	4"	7 5/8"	200°	±0.1%	0-2, 0-10, 0-100, 0-150, 0-200	00000000	000000	00000000	00000
3/4	3/4	250 scfm @ 100 psi	250	No	2	4"	7 5/8"	200°	±0.1%	0-10, 0-30, 0-60, 0-100, 0-150, 0-200	00000000	000000	00000000	00000
Nonrelieving
1/4	1/4	80 scfm @ 100 psi	250	No	2	3"	6 1/8"	160°	±0.05%	0-2, 0-15, 0-30, 0-60, 0-150	00000000	000000	000000	00000
1/4	1/4	100 scfm @ 100 psi	250	No	2	4"	7 5/8"	200°	±0.1%	0-100, 0-200	00000000	000000	00000000	00000
3/8	3/8	80 scfm @ 100 psi	250	No	2	3"	6 1/8"	160°	±0.05%	0-60, 0-150	00000000	000000	000000	00000
1/2	1/2	80 scfm @ 100 psi	250	No	2	3"	6 1/8"	160°	±0.05%	0-2, 0-15, 0-30, 0-60, 0-150	00000000	000000	000000	00000
1/2	1/2	225 scfm @ 100 psi	250	No	2	4"	7 5/8"	200°	±0.1%	0-100	00000000	000000	00000000	00000
3/4	3/4	250 scfm @ 100 psi	250	No	2	4"	7 5/8"	200°	±0.1%	0-2, 0-10, 0-30, 0-150, 0-200	00000000	000000	00000000	00000

Pressure Gauges

Pressure Gauge

Pressure Range, psi	Pipe Size	Connection Type	Thread Type	Gender	Connection Location		Each
0-15	1/4	Threaded	NPT	Male	Back	00000000	000000
0-30	1/4	Threaded	NPT	Male	Back	00000000	00000
0-60	1/4	Threaded	NPT	Male	Back	00000000	00000
0-100, 0-150	1/4	Threaded	NPT	Male	Back	00000000	00000

Precision Compressed Air Regulators

At ±0.1% accuracy, use these regulators in sensitive applications where constant, consistent pressure is important. All are relieving regulators, so they exhaust when the downstream pressure exceeds the set pressure. Install in your air line after filters.

Mounting brackets (sold separately) allow you to attach the regulator to a wall or equipment.

For technical drawings and 3-D models, click on a part number.

Regulators
Pipe Size						Overall							Mounting Brackets
Inlet	Outlet	Max. Flow Rate	Max. Pressure, psi	Gauge Included	No. of Gauge Ports	Wd.	Ht.	Max. Temp., °F	Regulating Accuracy	Choose a Pressure Regulating Range, psi		Each		Each
Zinc Housing
NPT Female Inlet and Outlet
1/8	1/8	14 scfm @ 100 psi	150	No	1	2 1/8"	4 1/4"	160°	±0.1%	2-25, 2-60, 2-120	0000000	0000000	000000	00
1/4	1/4	14 scfm @ 100 psi	150	No	1	2 1/8"	4 1/4"	150°	±0.1%	2-25, 2-60, 2-120	0000000	000000	0000000	000000
3/8	3/8	14 scfm @ 100 psi	150	No	1	2 1/8"	4 1/4"	150°	±0.1%	2-25, 2-60, 2-120	0000000	000000	0000000	00000

Miniature Precision Compressed Air Regulators

Fit these regulators in tight spaces to adjust and maintain air pressure in sensitive applications where constant, consistent pressure is important. All are relieving regulators, so they exhaust when the downstream pressure exceeds the set pressure. Install in your air line after filters.

BSPP threads are also known as G threads.

Mounting brackets (sold separately) allow you to attach the regulator to a wall or equipment.

For technical drawings and 3-D models, click on a part number.

Inline Mount

Regulators
Pipe Size						Overall							Mounting Brackets
Inlet	Outlet	Max. Flow Rate	Max. Pressure, psi	Gauge Included	No. of Gauge Ports	Wd.	Ht.	Max. Temp., °F	Regulating Accuracy	Choose a Pressure Regulating Range, psi		Each		Each
Inline Mount
Aluminum Housing—NPT Female Inlet and Outlet
1/8	1/8	14 scfm @ 100 psi	150	No	1	1 3/8"	3 7/8"	160°	±0.3%	1-30, 1-60, 1-120	000000	0000000	0000000	000000
Aluminum Housing—BSPP Female Inlet and Outlet
1/8	1/8	14 scfm @ 100 psi	150	No	1	1 3/8"	3 7/8"	160°	±0.3%	1-30, 1-60, 1-120	000000	000000	0000000	00000

Pressure Gauges for Inline-Mount Regulators

NPT Connections
Choose a Pressure Regulating Range, psi		Each
1-30, 1-60, 1-120	000000	000000
BSPP Connections
1-30, 1-60, 1-120	000000	00000

Versa-Mount Precision Compressed Air Regulators

Mount these regulators to a 35 mm DIN rail or a wall with one of the two included brackets. With an accuracy of ±0.2%, use these regulators to adjust and maintain air pressure in sensitive applications where constant, consistent pressure is important. All are relieving regulators, so they exhaust when the downstream pressure exceeds the set pressure. Install in your air line after filters.

For technical drawings and 3-D models, click on a part number.

Pipe Size							Overall
Inlet	Outlet	Max. Flow Rate	Max. Pressure, psi	Gauge Included	No. of Gauge Ports	For DIN Rail Ht., mm	Wd.	Ht.	Max. Temp., °F	Includes	Regulating Accuracy	Choose a Pressure Regulating Range, psi		Each
Aluminum Housing
NPT Female Inlet and Outlet
1/4	1/4	40 scfm @ 100 psi	250	No	1	35	2 1/4"	5 1/2"	200°	DIN-Rail Mounting Bracket, Wall Mounting Bracket	±0.2%	0-10, 0.5-30, 1-60, 2-100, 3-200	000000	0000000
1/4	1/4	60 scfm @ 100 psi	500	No	1	35	3"	7"	200°	DIN-Rail Mounting Bracket, Wall Mounting Bracket	±0.2%	0-10, 0.5-30, 1-60, 2-150, 5-300, 5-400	000000	000000
3/8	3/8	40 scfm @ 100 psi	250	No	1	35	2 1/4"	5 1/2"	200°	DIN-Rail Mounting Bracket, Wall Mounting Bracket	±0.2%	0-10, 0.5-30, 1-60, 2-100, 3-200	000000	000000
3/8	3/8	60 scfm @ 100 psi	500	No	1	35	3"	7"	200°	DIN-Rail Mounting Bracket, Wall Mounting Bracket	±0.2%	0-10, 0.5-30, 1-60, 2-150, 5-300, 5-400	000000	000000
1/2	1/2	60 scfm @ 100 psi	500	No	1	35	3"	7"	200°	DIN-Rail Mounting Bracket, Wall Mounting Bracket	±0.2%	0-10, 0.5-30, 1-60, 2-150, 5-300, 5-400	000000	000000

Corrosion-Resistant Precision Compressed Air Regulators

A 316 stainless steel housing provides superior corrosion resistance. With an accuracy of ±0.1 psi, use these regulators in sensitive applications where constant, consistent pressure is important. All are relieving regulators, so they exhaust when the downstream pressure exceeds the set pressure. Install in your air line after filters.

For technical drawings and 3-D models, click on a part number.

Pipe Size						Overall
Inlet	Outlet	Max. Flow Rate	Max. Pressure, psi	Gauge Included	No. of Gauge Ports	Wd.	Ht.	Max. Temp., °F	Regulating Accuracy	Choose a Pressure Regulating Range, psi		Each
316 Stainless Steel Housing
NPT Female Inlet and Outlet
3/8	3/8	20 scfm @ 100 psi	250	No	1	2 1/2"	7"	180°	±0.1 psi	0-60, 0-100, 2-150	000000	000000000

DIN-Mount Electronically Controlled Precision Compressed Air Regulators

Mount these regulators to a 35 mm DIN rail with the included bracket. Designed for control applications that require high reliability and repeatability, regulators translate electrical signals to output pressure. As the input signal current increases, the output pressure increases proportionally within the regulating range. Use with sensors that produce the required input signal current or programmable logic controllers (PLC) for automatic setting adjustments. All are relieving regulators, so they exhaust when the downstream pressure exceeds the set pressure. Install in your air line after filters.

For technical drawings and 3-D models, click on a part number.

			Pipe Size							Overall
Pressure Regulating Range, psi	Input Signal Current, mA	Input Signal Voltage	Inlet	Outlet	Max. Flow Rate	Max. Pressure, psi	Gauge Included	No. of Gauge Ports	For DIN Rail Ht., mm	Wd.	Ht.	Max. Temp., °F	Regulating Accuracy	Includes		Each
Aluminum Housing
NPT Female Inlet and Outlet
1-17	4-20	__	1/4	1/4	12 scfm @ 100 psi	60	No	1	35	2 1/4"	3 3/4"	150°	±0.5%	DIN-Rail Mounting Bracket	000000	0000000
2-60	4-20	__	1/4	1/4	12 scfm @ 100 psi	150	No	1	35	2 1/4"	3 3/4"	150°	±0.5%	DIN-Rail Mounting Bracket	00000000	000000
3-15	4-20	__	1/4	1/4	12 scfm @ 100 psi	100	No	1	35	2 1/4"	3 3/4"	150°	±0.5%	DIN-Rail Mounting Bracket	00000000	000000
3-27	4-20	__	1/4	1/4	12 scfm @ 100 psi	100	No	1	35	2 1/4"	3 3/4"	150°	±0.5%	DIN-Rail Mounting Bracket	00000000	000000
3-120	__	0-10V DC	1/4	1/4	12 scfm @ 100 psi	150	No	1	35	2 1/4"	3 3/4"	150°	±0.5%	DIN-Rail Mounting Bracket	000000	000000
3-120	4-20	__	1/4	1/4	12 scfm @ 100 psi	150	No	1	35	2 1/4"	3 3/4"	150°	±0.5%	DIN-Rail Mounting Bracket	000000	000000

Electronically Controlled Precision Compressed Air Regulators

Designed for control applications that require high reliability and repeatability, these regulators translate electrical signals to output pressure. As the input signal current increases, the output pressure increases proportionally within the regulating range. Use with sensors that produce the required input signal current or programmable logic controllers (PLC) for automatic setting adjustments.

All are relieving regulators, so they exhaust when the downstream pressure exceeds the set pressure. The enclosure meets NEMA 4X for protection from dirt, washdowns, and corrosion. Install these regulators in your air line after filters.

For technical drawings and 3-D models, click on a part number.

			Pipe Size							Overall
Pressure Regulating Range, psi	Input Signal Current, mA	Input Signal Voltage	Inlet	Outlet	Max. Flow Rate	Max. Pressure, psi	Gauge Included	No. of Gauge Ports	Environmental Rating	Wd.	Ht.	Max. Temp., °F	Regulating Accuracy	Includes		Each
Aluminum Housing
NPT Female Inlet and Outlet
1-17	4-20	__	1/4	1/4	12 scfm @ 100 psi	100	No	1	NEMA 4X, IP65	2 7/8"	4 1/4"	140°	±0.5%	Mounting Bracket	000000	0000000
2-60	__	0-5V DC	1/4	1/4	12 scfm @ 100 psi	150	No	1	NEMA 4X, IP65	2 7/8"	4 1/4"	140°	±0.5%	Mounting Bracket	0000000	000000
2-60	4-20	__	1/4	1/4	12 scfm @ 100 psi	150	No	1	NEMA 4X, IP65	2 7/8"	4 1/4"	140°	±0.5%	Mounting Bracket	000000	000000
3-15	4-20	__	1/4	1/4	12 scfm @ 100 psi	100	No	1	NEMA 4X, IP65	2 7/8"	4 1/4"	140°	±0.5%	Mounting Bracket	000000	000000
3-27	4-20	__	1/4	1/4	12 scfm @ 100 psi	100	No	1	NEMA 4X, IP65	2 7/8"	4 1/4"	140°	±0.5%	Mounting Bracket	000000	000000
3-120	__	0-10V DC	1/4	1/4	12 scfm @ 100 psi	150	No	1	NEMA 4X, IP65	2 7/8"	4 1/4"	140°	±0.5%	Mounting Bracket	000000	000000
3-120	4-20	__	1/4	1/4	12 scfm @ 100 psi	150	No	1	NEMA 4X, IP65	2 7/8"	4 1/4"	140°	±0.5%	Mounting Bracket	000000	000000
6-30	4-20	__	1/4	1/4	12 scfm @ 100 psi	100	No	1	NEMA 4X, IP65	2 7/8"	4 1/4"	140°	±0.5%	Mounting Bracket	0000000	000000

Electronically Controlled Precision Compressed Air Regulators with Display

Aluminum Housing with LED Display

View and control output pressure remotely and at the source. You can set these regulators using electrical signal current, or you can use the display and push-button control to adjust output pressure. Regulators have 12 functions, including outlet pressure, pressure scale (psi or bar), minimum pressure, and maximum pressure (within the regulating range). All are relieving regulators, so they exhaust when the downstream pressure exceeds the set pressure. Enclosure meets IP65 for protection from dust and water spray. Install these regulators in your air line after filters.

Mounting brackets (sold separately) allow you to attach the regulator to a wall or equipment.

For technical drawings and 3-D models, click on a part number.

Regulators
			Pipe Size				Overall						Mounting Brackets		Connecting Cables
Pressure Regulating Range, psi	Input Signal Current, mA	Input Signal Voltage	Inlet	Outlet	Max. Flow Rate	Max. Pressure, psi	Wd.	Ht.	Max. Temp., °F	Regulating Accuracy		Each		Each		Each
Aluminum Housing with LED Display
NPT Female Inlet and Outlet
0-29	4-20	0-10V DC	1/4	1/4	35 scfm @ 100 psi	43	2 1/4"	5 5/8"	120°	±1.3%	000000	0000000	0000000	000000	00000000	0000000
0-145	4-20	0-10V DC	1/4	1/4	35 scfm @ 100 psi	152	2 1/4"	5 5/8"	120°	±1.3%	000000	000000	0000000	00000	00000000	000000

High-Flow Electronically Controlled Precision Compressed Air Regulators with Display

Aluminum Housing with LCD Display

Aluminum Housing with LED Display

Keep an eye on the output pressure in high-flow applications—these regulators have a display so you can monitor your application locally. Designed for control applications that require high reliability and repeatability, regulators translate electrical signals to output pressure. As the input signal current increases, the output pressure increases proportionally within the regulating range. Use with sensors that produce the required input signal current or programmable logic controllers (PLC) for automatic setting adjustments. All are relieving regulators, so they exhaust when the downstream pressure exceeds the set pressure. Install in your air line after filters.

Regulators with an LED display have multiple functions, including outlet pressure, pressure scale (psi or bar), minimum pressure, and maximum pressure (within the regulating range). Enclosure meets IP65 for protection from dust and water spray.

Mounting brackets (sold separately) allow you to attach the regulator to a wall or equipment.

For technical drawings and 3-D models, click on a part number.

Regulators
			Pipe Size				Overall						Mounting Brackets		Connecting Cables
Pressure Regulating Range, psi	Input Signal Current, mA	Input Signal Voltage	Inlet	Outlet	Max. Flow Rate	Max. Pressure, psi	Wd.	Ht.	Max. Temp., °F	Regulating Accuracy		Each		Each		Each
NPT Female Inlet and Outlet—Hardwire
Aluminum Housing with LCD Display
0-125	__	0-10V DC	1/4	1/4	90 scfm @ 100 psi	150	2 3/8"	6 3/8"	125°	±0.8%	00000000	0000000	0000000	000000	000000	00
0-125	__	0-10V DC	3/8	3/8	100 scfm @ 100 psi	150	2 3/8"	6 3/8"	125°	±0.8%	00000000	000000	0000000	00000	000000	00
0-125	__	0-10V DC	1/2	1/2	100 scfm @ 100 psi	150	2 3/8"	6 3/8"	125°	±0.8%	00000000	000000	0000000	00000	000000	00
NPT Female Inlet and Outlet—Plug
Aluminum Housing with LED Display
0-145	4-20	0-10V DC	1/2	1/2	120 scfm @ 100 psi	152	3"	7 1/2"	120°	±1.3%	000000	000000	0000000	00000	00000000	0000000

Compressed Air Filter/Precision Regulators for Particle Removal

Manual Drain

With ±0.2 psi accuracy, these filter/regulators provide more precise control than our other compressed air filter/regulators. They provide clean air for use in applications where constant, consistent pressure is important. Joined top-to-bottom, the filter and regulator fit in the same space as a filter alone. Regulator is relieving style, so it exhausts when the downstream pressure exceeds the set pressure.

Mounting brackets (sold separately) allow you to attach the filter/regulator to a wall or equipment.

For technical drawings and 3-D models, click on a part number.

Filter/Precision Regulators
Pipe Size							Overall				Mounting Brackets		Replacement Filter Elements
Inlet	Outlet	Max. Flow Rate	Max. Pressure, psi	Removes Particle Size Down To, microns	Pressure Regulating Range, psi	Gauge Included	Wd.	Ht.		Each		Each		Each
NPT Female Inlet and Outlet
Opaque Bowl with Manual Drain
1/4	1/4	22 cfm @ 100 psi	250	5	0-10	No	3 1/8"	7 3/4"	0000000	000000	0000000	000000	000000	000000
1/4	1/4	22 cfm @ 100 psi	250	5	0-30	No	3 1/8"	7 3/4"	0000000	00000	0000000	00000	000000	00000
1/4	1/4	22 cfm @ 100 psi	250	5	0-60	No	3 1/8"	7 3/4"	0000000	00000	0000000	00000	000000	00000
1/4	1/4	22 cfm @ 100 psi	250	5	0-120	No	3 1/8"	7 3/4"	0000000	00000	0000000	00000	000000	00000
1/4	1/4	25 cfm @ 100 psi	250	5	0-30	No	3 1/8"	7 1/4"	00000000	00000	0000000	00000	000000	00000
1/4	1/4	25 cfm @ 100 psi	250	5	0-60	No	3 1/8"	7 1/4"	00000000	00000	0000000	00000	000000	00000
1/4	1/4	25 cfm @ 100 psi	250	5	0-120	No	3 1/8"	7 1/4"	00000000	00000	0000000	00000	000000	00000
1/2	1/2	80 cfm @ 100 psi	250	5	0-30	No	3 1/8"	9 3/4"	00000000	000000	0000000	00000	000000	00000
1/2	1/2	80 cfm @ 100 psi	250	5	0-60	No	3 1/8"	9 3/4"	00000000	000000	0000000	00000	000000	00000
1/2	1/2	80 cfm @ 100 psi	250	5	0-120	No	3 1/8"	9 3/4"	00000000	000000	0000000	00000	000000	00000