Air Pressure Boosters | McMaster-Carr

	For Use With For Use With

Air

Nitrogen

	Maximum Output Pressure Maximum Output Pressure

	Pressure Input to Output Ratio Pressure Input to Output Ratio

1:4

1:2

5:1

	Maximum Input Pressure Maximum Input Pressure

	Flow Input to Output Ratio Flow Input to Output Ratio

	For Maximum Tank Capacity For Maximum Tank Capacity

	Inlet Pipe Size Inlet Pipe Size

	Flow Control Flow Control

Adjustable

Fixed

	Material Material

	For Air Type For Air Type

Filtered

Nonlubricated

	Overall Length Overall Length

	Inlet Thread Type Inlet Thread Type

NPTF

NPT

	Outlet Pipe Size Outlet Pipe Size

1/4

3/8

	Minimum Input Pressure Minimum Input Pressure

	Outlet Connection Type Outlet Connection Type


Pipe	Hose

	Outlet Thread Type Outlet Thread Type

NPTF

NPT

	Number of Inlets Number of Inlets

	Number of Mounting Holes Number of Mounting Holes

	Mounting Hole Diameter Mounting Hole Diameter

	Maximum Temperature Maximum Temperature

	Overall Width Overall Width

	Minimum Output Pressure Minimum Output Pressure

	For Minimum Tank Capacity For Minimum Tank Capacity

32 Products

Compressed Air Pressure Boosters

Ensure sufficient pressure to operate air-powered tools and machines. Pressure boosters compress the air supply, which increases air pressure. To maximize performance and service life, install a filter inline before the booster to remove particles down to the maximum particle size. Do not use boosters for tank capacities larger than specified.

Adjustable boosters have an integral regulator so you can fine-tune the output pressure. They come with pressure gauges on the inlet and outlet.

Boosters with 3/8 NPT female inlet and outlet require compressed air to operate—they have a drive inlet and a pilot inlet that control the booster.

Compressed Air Pressure Boosters

Adjustable Booster with
1/4 NPTF Female
Supply Inlet

Fixed Booster with
1/4 NPT Female
Supply Inlet

Fixed Booster with 3/8 NPT Female Supply Inlet

Input to Output Ratio		Pressure, psi							Overall			Mounting Holes
Pressure	Flow	Input	Output	For Tank Cap., gal.	Max. Particle Size, µm	No. of Inlets	Duty Cycle	Max. Temp., °F	Lg.	Wd.	Ht.	No. of	Dia.	Mounting Fasteners Included		Each
Adjustable
1/4 NPTF Female Supply Inlet and Outlet
1:2	2:1	14.5-145	29-290	1.32-2.64	5	1	__	122°	6"	5"	4 1/2"	4	0.22"	No	0000000	0000000
1:4	4:1	14.5-145	29-290	1.32-2.64	5	1	__	122°	6"	5"	4 1/2"	4	0.22"	Yes	0000000	000000
Fixed
1/4 NPT Female Supply Inlet and Outlet
1:2	2:1	10-100	20-200	0-5	40	1	4 Minutes On, 4 Minutes Off	Not Rated	7 1/2"	5 1/4"	4 1/2"	4	0.28"	No	0000000	000000
1:4	4:1	10-100	40-400	0-5	40	1	4 Minutes On, 4 Minutes Off	Not Rated	7 1/2"	5 1/4"	4 1/2"	4	0.28"	No	0000000	000000
3/8 NPT Female Supply Inlet and Outlet
1:2	2:1	25-150	30-300	4-60	40	1	30 Minutes On, 30 Minutes Off	180°	17"	8"	11"	4	0.38"	No	0000000	00000000
1:5	7:1	30-870	90-870	1-15	40	2	30 Minutes On, 30 Minutes Off	140°	24"	9"	9"	4	0.44"	No	0000000	00000000

Repair Kits

Repair Kit

Air Drive Repair Kit
For Pressure Input to Output Ratio	For Inlet Pipe Size	For Inlet Thread Type	Includes		Each
1:2, 1:4	1/4	NPT	Bearing, Nine O-Rings, Spring, Star Washer	00000000	000000
Check Valve Repair Kit
1:2, 1:4	1/4	NPT	Three O-Rings, Two Balls, Two Seat Balls, Two Springs	00000000	00000
Complete Repair Kit
1:2	1/4	NPT	Bearing, Cotter Pin, High-Pressure Seal, Star Washer, Thirteen O-Rings, Three Springs, Two Balls, Two Seat Balls	00000000	000000
1:4	1/4	NPT	Bearing, Cotter Pin, High-Pressure Seal, Star Washer, Thirteen O-Rings, Three Springs, Two Balls, Two Seat Balls	00000000	000000
High-Pressure Section Repair Kit
1:2	1/4	NPT	Cotter Pin, High-Pressure Seal, O-Ring	00000000	00000
1:4	1/4	NPT	Cotter Pin, High-Pressure Seal, O-Ring	00000000	00000

Compressed Air Flow Boosters

Adjustable

Fixed

Fixed with Flange

Create a high-flow air stream from your compressed air supply. Flow boosters draw in ambient air, which amplifies compressed air flow. To maximize performance and service life, install a filter inline before the booster to remove particles down to the maximum particle size. Use hose clamps (not included) to connect hose or duct to the inlet or outlet.

Adjustable boosters allow you to fine-tune the flow—rotate the knurled ring to change the amount of ambient air drawn into the booster.

Boosters with flange mount easily near your equipment.

	Input				Ambient Air Inlet		Outlet		Overall		Flange		Mounting Holes
Flow Input to Output Ratio	Flow Rate @ 90 psi	Pressure, psi	Output Flow Rate @ 90 psi	Max. Particle Size, µm	Connection Type	For Tube ID	Connection Type	For Tube ID	Lg.	Wd.	Ht.	Lg.	No. of	Dia.	Mounting Fasteners Included		Each
Adjustable
1/8 NPT Male Supply Inlet
1:6	13 cfm	5-150	35-65 cfm	20	Clamp On	0.75"	Clamp On	0.75"	2 9/16"	1"	__	__	__	__	__	00000000	000000
1:8	13 cfm	5-150	37-79 cfm	20	Clamp On	0.75"	Clamp On	0.75"	2 9/16"	1 1/8"	__	__	__	__	__	00000000	00000
1:12	25 cfm	5-150	155-250 cfm	20	Clamp On	1.125"	Clamp On	1.125"	2 5/8"	1 1/2"	__	__	__	__	__	00000000	00000
1/4 NPT Male Supply Inlet
1:15	28 cfm	5-150	200-400 cfm	20	Clamp On	1.5"	Clamp On	1.5"	3 1/4"	2"	__	__	__	__	__	00000000	000000
1:20	29 cfm	5-150	330-520 cfm	20	Clamp On	2"	Clamp On	2"	3 1/4"	2 1/2"	__	__	__	__	__	00000000	000000
1:22	40 cfm	5-150	380-840 cfm	20	Clamp On	2.5"	Clamp On	2.5"	4 5/8"	3"	__	__	__	__	__	00000000	000000
3/8 NPT Male Supply Inlet
1:25	51 cfm	5-150	700-1,200 cfm	20	Clamp On	3.5"	Clamp On	3.5"	5 1/4"	4"	__	__	__	__	__	00000000	000000
Fixed
1/8 NPT Female Supply Inlet
1:4	8 cfm	10-200	29.2 cfm	5	Clamp On	0.75"	Clamp On	0.75"	2 1/2"	1 3/8"	__	__	__	__	__	0000000	00000
1:4	8 cfm	10-200	29.2 cfm	5	Clamp On	1.33"	Clamp On	0.75"	2 1/8"	1 3/8"	__	__	__	__	__	0000000	00000
1:4	17 cfm	10-200	62 cfm	5	Clamp On	1.33"	Clamp On	0.5"	2 5/8"	1 3/8"	__	__	__	__	__	0000000	00000
Fixed with Flange
1/8 NPT Female Supply Inlet
1:10	6.5 cfm	5-150	42 cfm	20	Clamp On	0.98"	Clamp On	0.73"	2 3/16"	2 5/16"	1.3"	2.3"	2	0.2"	No	000000	00000
1/4 NPT Female Supply Inlet
1:15	11 cfm	5-150	155 cfm	20	Clamp On	1.5"	Clamp On	1.22"	2 3/4"	3"	1.9"	3"	2	0.27"	No	0000000	000000
3/8 NPT Female Supply Inlet
1:16	21 cfm	5-150	325 cfm	20	Clamp On	2.95"	Clamp On	2"	3 3/4"	4 1/8"	3.2"	4.1"	2	0.27"	No	0000000	000000
1/2 NPT Female Supply Inlet
1:17	42 cfm	5-150	615 cfm	20	Clamp On	4.92"	Clamp On	4"	7"	8 1/2"	5.9"	8.5"	2	0.53"	No	0000000	000000

Compressed Air Pilot Signal Flow Boosters

Use a low-flow air pilot signal with an air supply to produce flow up to 50 cfm to actuate valves and other air-powered system components. To maximize performance and service life, install a filter inline before the booster to remove particles down to the maximum particle size.

Boosters with a 1:1 air signal to output ratio maintain pressure between the air signal and the boosted output.

Boosters with 1:3 and 1:6 air signal to output ratios increase pressure between the air signal and the boosted output.

	Pressure, psi				Air Pilot			Gauge Port					Overall			Mounting Holes
Air Pilot Signal to Output Ratio	Input	Output	Max. Air Pilot Signal	Max. Particle Size, μm	Pipe Size	Thread Type	Gender	Pipe Size	Thread Type	Gender	Exhaust Air Flow, scfm	Max. Temp., °F	Lg.	Wd.	Ht.	No. of	Dia.	Mounting Fasteners Included		Each
Fixed
1/4 NPT Female Supply Inlet and Outlet
1:1	0-250	0-150	150	40	1/4	NPT	Female	1/4	NPT	Female	15	160°	3"	3"	4"	6	0.33"	No	0000000	0000000
1:3	0-250	0-150	50	40	1/4	NPT	Female	1/4	NPT	Female	15	160°	3"	3"	4"	6	0.33"	No	0000000	000000
1:6	0-250	0-150	25	40	1/4	NPT	Female	1/4	NPT	Female	10	160°	3"	3"	4"	6	0.33"	No	0000000	000000
3/8 NPT Female Supply Inlet and Outlet
1:1	0-250	0-150	150	40	1/4	NPT	Female	1/4	NPT	Female	15	160°	3"	3"	4"	6	0.33"	No	0000000	000000

4 Nuts, 4 Screws, 4 Washers	000000	Each	000000
4 Nuts, 4 Screws, 4 Washers	00000000	Each	00000