Compact Regulators | McMaster-Carr

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64 Products

About Air Preparation

Regulator

Regulator with Gauge

A lower profile than our other compressed air regulators makes these regulators a better fit in tight spots. Use them to adjust and maintain the pressure of your compressed air. Install them in your air line after filters.

Relieving regulators exhaust when the downstream pressure exceeds the set pressure. Nonrelieving regulators don’t exhaust downstream pressure. They’re often used to conserve air or to avoid contaminating a controlled area. To prevent pressure buildup, manually vent them or add a relief valve.

Brass regulators are more corrosion resistant than aluminum and zinc, so you can use them outdoors.

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

Relieving

Regulators
Pipe Size						Overall							Mounting Brackets
Inlet	Outlet	Max. Flow Rate	Max. Pressure, psi	Housing Material	No. of Gauge Ports	Wd.	Ht.	Max. Temp., °F	Regulating Accuracy	Choose a Pressure Regulating Range, psi		Each		Each
NPT Female Inlet and Outlet
1/8	1/8	13 scfm @ 100 psi	300	Zinc	2	1 5/8"	2 7/8"	125°	±3 psi	0-15, 0-30, 0-60, 0-125	6746K65	000000	41735K48	000000
1/8	1/8	17 scfm @ 100 psi	300	Aluminum	2	1 1/2"	3 1/4"	150°	±2 psi	0-30, 0-60, 0-125	6746K74	00000	6763K21	00000
1/8	1/8	25 scfm @ 100 psi	250	Nylon Plastic	2	1 1/2"	2 3/4"	120°	±3 psi	3-20, 3-60, 5-125	6746K28	00000	6746K83	0000
1/4	1/4	1.75 scfm @ 100 psi	145	Acetal Plastic	1	1 3/4"	3 1/8"	125°	Not Rated	5-50, 5-125	41595K21	00000	9891K66	00000
1/4	1/4	13 scfm @ 100 psi	250	Zinc	1	1 5/8"	2 3/8"	150°	Not Rated	5-50, 5-125, 5-150	41875K31	00000	______	00
1/4	1/4	15 scfm @ 100 psi	300	Zinc	2	1 5/8"	2 7/8"	125°	±3 psi	0-15	6746K43	00000	41735K48	00000
1/4	1/4	15 scfm @ 100 psi	300	Zinc	2	1 5/8"	2 7/8"	125°	±3 psi	0-30, 0-60, 0-125	6746K44	00000	41735K48	00000
1/4	1/4	19 scfm @ 100 psi	300	Aluminum	2	1 1/2"	3 1/4"	150°	±2 psi	0-30, 0-60, 0-125	6746K75	00000	6763K21	00000
1/4	1/4	25 scfm @ 100 psi	250	Nylon Plastic	2	1 1/2"	2 3/4"	120°	±3 psi	3-20, 3-60, 5-125	6746K29	00000	6746K83	0000
BSPP Female Inlet and Outlet
1/4	1/4	1.75 scfm @ 100 psi	145	Acetal Plastic	1	1 5/8"	3"	125°	Not Rated	0-50	6746K944	00000	9891K66	00000

Relieving with Gauge

Regulators
Pipe Size					Overall							Mounting Brackets
Inlet	Outlet	Max. Flow Rate	Max. Pressure, psi	Housing Material	Wd.	Ht.	Max. Temp., °F	Regulating Accuracy	Choose a Pressure Regulating Range, psi		Each		Each
NPT Female Inlet and Outlet
1/8	1/8	10 scfm @ 100 psi	300	Aluminum	1 5/8"	3 1/8"	125°	±1 psi	0-25, 0-60, 0-125	6763K81	000000	6763K21	000000
1/8	1/8	10 scfm @ 100 psi	300	Brass	1 5/8"	3 1/8"	125°	±1 psi	0-25, 0-60, 0-125	6763K11	00000	6763K21	00000
1/8	1/8	13 scfm @ 100 psi	300	Zinc	1 5/8"	2 7/8"	125°	±3 psi	0-15, 0-30, 0-125	6746K54	00000	41735K48	00000
1/8	1/8	14 scfm @ 100 psi	300	Zinc	1 5/8"	3"	150°	±3 psi	1-10, 5-50, 5-100	9892K11	00000	9891K66	00000
1/8	1/8	17 scfm @ 100 psi	300	Aluminum	1 1/2"	3 1/4"	150°	±2 psi	0-30, 0-60, 0-125	6746K45	00000	6763K21	00000
1/8	1/8	25 scfm @ 100 psi	250	Nylon Plastic	1 1/2"	2 3/4"	120°	±3 psi	3-20, 3-60, 5-125	6746K38	00000	6746K83	0000
1/4	1/4	10 scfm @ 100 psi	300	Aluminum	1 5/8"	3 1/8"	125°	±1 psi	0-25, 0-60, 0-125	6763K82	00000	6763K21	00000
1/4	1/4	10 scfm @ 100 psi	300	Brass	1 5/8"	3 1/8"	125°	±1 psi	0-25, 0-60, 0-125	6763K13	00000	6763K21	00000
1/4	1/4	15 scfm @ 100 psi	300	Zinc	1 5/8"	2 7/8"	125°	±3 psi	0-30, 0-125	6746K55	00000	41735K48	00000
1/4	1/4	15 scfm @ 100 psi	300	Zinc	1 5/8"	3"	150°	±3 psi	1-10, 5-50, 5-100	9892K12	00000	9891K66	00000
1/4	1/4	19 scfm @ 100 psi	300	Aluminum	1 1/2"	3 1/4"	150°	±2 psi	0-30, 0-60, 0-125	6746K48	00000	6763K21	00000
1/4	1/4	25 scfm @ 100 psi	250	Nylon Plastic	1 1/2"	2 3/4"	120°	±3 psi	3-20, 3-60, 5-125	6746K39	00000	6746K83	0000
1/4	1/4	60 scfm @ 100 psi	200	Aluminum	1 5/8"	2 7/16"	140°	±3 psi	0-150	6746K84	00000	______	00
BSPP Female Inlet and Outlet
1/8	1/8	14 scfm @ 100 psi	300	Zinc	1 5/8"	3"	150°	±3 psi	1-10, 5-50, 5-100	6746K93	00000	9891K66	00000
1/4	1/4	15 scfm @ 100 psi	300	Zinc	1 5/8"	3"	150°	±3 psi	1-10, 5-50, 5-100	6746K94	00000	9891K66	00000
1/4	1/4	19 scfm @ 100 psi	300	Aluminum	1 1/2"	3 1/4"	150°	±2 psi	0-30, 0-125	6746K52	00000	6763K21	00000

Nonrelieving

Regulators
Pipe Size						Overall							Mounting Brackets
Inlet	Outlet	Max. Flow Rate	Max. Pressure, psi	Housing Material	No. of Gauge Ports	Wd.	Ht.	Max. Temp., °F	Regulating Accuracy	Choose a Pressure Regulating Range, psi		Each		Each
NPT Female Inlet and Outlet
1/8	1/8	13 scfm @ 100 psi	300	Zinc	2	1 5/8"	2 7/8"	125°	±3 psi	0-15, 0-30, 0-60, 0-125	6746K68	000000	41735K48	000000
1/8	1/8	15 scfm @ 100 psi	150	Acetal Plastic	2	1 5/8"	3 1/8"	125°	±1 psi	0-25, 0-125	6746K41	00000	6763K21	00000
1/4	1/4	15 scfm @ 100 psi	300	Zinc	2	1 5/8"	2 7/8"	125°	±3 psi	0-30, 0-60, 0-125	6746K69	00000	41735K48	00000
1/4	1/4	18 scfm @ 100 psi	150	Acetal Plastic	2	1 5/8"	3 1/8"	125°	±1 psi	0-25, 0-60, 0-125	6746K42	00000	6763K21	00000

Nonrelieving with Gauge

Regulators
Pipe Size					Overall							Mounting Brackets
Inlet	Outlet	Max. Flow Rate	Max. Pressure, psi	Housing Material	Wd.	Ht.	Max. Temp., °F	Regulating Accuracy	Choose a Pressure Regulating Range, psi		Each		Each
NPT Female Inlet and Outlet
1/8	1/8	13 scfm @ 100 psi	300	Zinc	1 5/8"	2 7/8"	125°	±3 psi	0-15, 0-30, 0-60, 0-125	6746K56	000000	41735K48	000000
1/4	1/4	15 scfm @ 100 psi	300	Zinc	1 5/8"	2 7/8"	125°	±3 psi	0-30, 0-60, 0-125	6746K57	00000	41735K48	00000
1/4	1/4	68 scfm @ 100 psi	300	Aluminum	1 9/16"	4 1/8"	150°	±3 psi	0-30, 0-60, 0-125, 0-232	6746K49	00000	6746K82	0000

Manifold-Mount Compressed Air Regulators

Multiple Regulators Shown Installed (Manifold Sold Separately)

Mount these miniature regulators on a manifold (sold separately) to create a regulating manifold. Each regulator can be set to a different output pressure, so you can power multiple tools or machines with a single air supply. All are relieving regulators, so they exhaust when the downstream pressure exceeds the set pressure. Install them in your air line after filters.

Regulators with a panel-mount nut can be installed through a hole in a panel or enclosure. They let you hide your air lines without losing access to the control knob.

NPT Male Inlet × UNF Female Outlet

Regulators
						Overall								4-Outlet Manifolds		6-Outlet Manifolds		10-Outlet Manifolds
Inlet Pipe Size	Outlet Thread Size	Max. Flow Rate	Max. Pressure, psi	Housing Material	Gauge Included	Wd.	Ht.	Max. Temp., °F	Includes	Regulating Accuracy	Choose a Pressure Regulating Range, psi		Each		Each		Each		Each
1/8	10-32	5 scfm @ 100 psi	250	Brass	No	3/4"	2 3/4"	150°	Panel-Mount Nut	±10%	0-20, 0-30, 0-40, 0-50, 0-60, 0-70, 0-100	41795K4	000000	5469K121	000000	5469K151	000000	5469K191	000000

BSPP Male Inlet × Push-to-Connect Female Outlet

Regulators
						Overall							4-Outlet Manifolds		6-Outlet Manifolds
Inlet Pipe Size	For Outlet Tube OD	Max. Flow Rate	Max. Pressure, psi	Housing Material	Gauge Included	Wd.	Ht.	Max. Temp., °F	Regulating Accuracy	Pressure Regulating Range, psi		Each		Each		Each
1/4	5/16"	9 scfm @ 100 psi	145	Brass	No	3/4"	2 1/2"	140°	±5 psi	14-116	8289N12	000000	5092K762	000000	5092K765	000000
1/4	6 mm	9 scfm @ 100 psi	145	Brass	No	3/4"	2 1/2"	140°	±5 psi	14-116	8289N11	00000	5092K762	00000	5092K765	00000
1/4	10 mm	9 scfm @ 100 psi	145	Brass	No	3/4"	2 1/2"	140°	±5 psi	14-116	8289N13	00000	5092K762	00000	5092K765	00000

Metric Male Inlet × Push-to-Connect Female Outlet

Regulators
Inlet							Overall							4-Outlet Manifolds		6-Outlet Manifolds		10-Outlet Manifolds
Thread Size	Thread Pitch, mm	For Outlet Tube OD	Max. Flow Rate	Max. Pressure, psi	Housing Material	Gauge Included	Wd.	Ht.	Max. Temp., °F	Regulating Accuracy	Pressure Regulating Range, psi		Each		Each		Each		Each
M5	0.8	4 mm	2.8 scfm @ 100 psi	115	Polyester Plastic	No	3/8"	2"	140°	±4.4 psi	14-101	8289N14	000000	8289N16	000000	8289N17	000000	8289N18	000000
M5	0.8	6 mm	2.8 scfm @ 100 psi	115	Polyester Plastic	No	3/8"	2"	140°	±4.4 psi	14-101	8289N15	00000	8289N16	00000	8289N17	00000	8289N18	00000

Parker Modular Compressed Air Regulators

P31 Series

Adjust and maintain the pressure of your compressed air. These regulators connect to other Parker units of the same series with joiner clamps (sold separately), so you can customize your air preparation system. All are relieving style, so they exhaust when the downstream pressure exceeds the set pressure. Install them in your air line after filters.

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

Joiner clamps (sold separately) connect these regulators to other Parker modular components with the same series number, even if the pipe sizes are slightly different. They create compact, airtight connections that are easy to swap out. All joiner clamps come with mounting brackets, except those for P3Y series regulators.

Padlockable covers (sold separately) clamp over the regulator knob to prevent unwanted pressure adjustments.

End block sets (sold separately) allow you to swap out components without unthreading your air line connections. The blocks remain connected to your pipe while you replace components between them.

Regulators
	Pipe Size					Overall							Mounting Brackets		Joiner Clamps		Tamper-Resistant Padlockable Covers		End Block Sets
Manufacturer Series	Inlet	Outlet	Max. Flow Rate	Max. Pressure, psi	Gauge Included	Wd.	Ht.	Max. Temp., °F	Regulating Accuracy	Choose a Pressure Regulating Range, psi		Each		Each		Each		Each		Each
Aluminum Housing
Series No. P31—NPT Female Inlet and Outlet
P31	1/4	1/4	68 scfm @ 100 psi	300	Yes	1 5/8"	4 1/8"	150°	±3 psi	0-30, 0-60, 0-125, 0-232	6746K46	000000	6746K82	00000	8486T111	00000	8367N11	000000	8199N102	000000
Series No. P31—BSPP Female Inlet and Outlet
P31	1/4	1/4	68 scfm @ 100 psi	300	Yes	1 5/8"	4 1/8"	150°	±3 psi	0-30, 0-60, 0-125, 0-232	6746K35	00000	6746K82	0000	8486T111	0000	8367N11	00000	______	00

Panel-Mount Precision Compressed Air Regulators

Centralize control for your air regulators—these regulators mount into a panel, cabinet, or control box. The inlet and outlet are on the bottom, so you can route air lines in tight quarters behind the panel. Use them where you need consistent air pressure to generate precise force and movement. All are relieving regulators, so they exhaust when the downstream pressure exceeds the set pressure. Install them in your air line after your filters.

Pipe Size		Thread Size							Overall
Inlet	Outlet	Inlet	Outlet	Max. Flow Rate	Max. Pressure, psi	Gauge Included	No. of Gauge Ports	For Panel Cutout Dia.	Wd.	Ht.	Housing Material	Max. Temp., °F	Mounting Hardware Included	Choose a Pressure Regulating Range, psi		Each
NPT Female Inlet and Outlet
±1% Regulating Accuracy
1/16	1/16	__	__	2.5 scfm @ 100 psi	250	No	1	5/16"	7/8"	3 3/8"	Aluminum	150°	Yes	0-5, 0-15, 0-30, 0-60, 0-100	41795K3	0000000
UNF Female Inlet and Outlet
±0.5% Regulating Accuracy
__	__	10-32	10-32	5 scfm @ 100 psi	250	No	1	3/8"	7/8"	3 1/4"	Aluminum	150°	Yes	0-5, 0-15, 0-30, 0-60, 0-100	41795K2	00000

Compact 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 to generate precise force and movement. All are relieving regulators, so they exhaust when the downstream pressure exceeds the set pressure. Install them 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.

Regulators

Regulators
Pipe Size						Overall							Mounting Brackets
Inlet	Outlet	Max. Flow Rate	Max. Pressure, psi	Gauge Included	No. of Gauge Ports	Wd.	Ht.	Housing Material	Max. Temp., °F	Choose a Pressure Regulating Range, psi		Each		Each
NPT Female Inlet and Outlet
±0.3% Regulating Accuracy
1/8	1/8	14 scfm @ 100 psi	150	No	2	1 3/8"	3 7/8"	Aluminum	160°	1-30, 1-60, 1-120	2227T2	0000000	2227T41	000000
BSPP Female Inlet and Outlet
±0.3% Regulating Accuracy
1/8	1/8	14 scfm @ 100 psi	150	No	2	1 3/8"	3 7/8"	Aluminum	160°	1-30, 1-60, 1-120	2490T1	000000	2227T41	00000

Pressure Gauges

NPT Connections
Choose a Pressure Regulating Range, psi		Each
1-30, 1-60, 1-120	2227T4	000000
BSPP Connections
1-30, 1-60, 1-120	2490T2	00000

About Air Preparation

Compact Compressed Air Regulators

Manifold-Mount Compressed Air Regulators

Parker Modular Compressed Air Regulators

Panel-Mount Precision Compressed Air Regulators

Compact Precision Compressed Air Regulators