Vacuum Traps | McMaster-Carr

	For Use With For Use With

	Inlet Pipe Size Inlet Pipe Size

	Outlet Pipe Size Outlet Pipe Size

	Housing Material Housing Material

	Maximum Temperature Maximum Temperature

	For Suction Tube ID For Suction Tube ID

1/4"

5/16"

3/8"

	Maximum Flow Rate Maximum Flow Rate

	Maximum Vacuum Maximum Vacuum

1 × 10^-3 torr @
72° F

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

DFARS Specialty Metals
COTS-Exempt

	Connection Style Connection Style

Threaded

Quick Clamp

Claw Clamp

	Filter Efficiency Filter Efficiency

90%

99%

Not Rated

	Element Height Element Height

	Overall Diameter Overall Diameter

	Overall Height Overall Height

	Element OD Element OD

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

RoHS Compliant with
Exemptions

RoHS Compliant

	Housing Clarity Housing Clarity

Clear

Opaque

	Element Material Element Material

Polybutylene Plastic

Plastic

Stainless Steel

	Pipe Size Pipe Size

	Bowl Capacity Bowl Capacity

1 fl. oz.

2.8 fl. oz.

	Minimum Temperature Minimum Temperature

-140° F

-15° F

	Removes Particle Size Down To Removes Particle Size Down To

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

REACH Compliant

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87 Products

About Noise, Filtration, and Flow Ratings

Vacuum-Rated Air Separators for Water Removal

Improve vacuum system efficiency and protect components from moisture—these separators remove over 90% of water from air. Typically used with vacuum pumps, they minimize vacuum pressure drop, even when the element is saturated with water. Separators have a viewing window so you can see inside to monitor water removal. Mount separator vertically for proper drainage (brackets sold separately), and install before air filters.

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

Separators
Pipe Size					O'all					Drain			Element				Mounting Brackets
Inlet	Outlet	Max. Flow Rate	Max. Vacuum	Max. Temp., °F	Ht.	Dia.	Filter Efficiency	Bowl Cap., fl. oz.	Bowl Material	Pipe Size	Thread Type	Gender	Ht.	OD		Each		Each
NPT Female Connections
1/4	1/4	7 scfm @ 14.7 psi	29.5 in. of Hg	140°	6 5/8"	2 1/16"	90%	1	Polycarbonate Plastic	1/8	BSPT	Female	1 3/4"	1 3/16"	0000000	0000000	0000000	00000
3/8	3/8	7 scfm @ 14.7 psi	29.5 in. of Hg	140°	6 5/8"	2 1/16"	90%	1	Polycarbonate Plastic	1/8	BSPT	Female	1 3/4"	1 3/16"	0000000	000000	0000000	0000
3/8	3/8	10.6 scfm @ 14.7 psi	29.5 in. of Hg	140°	8 1/16"	2 3/4"	90%	2.8	Polycarbonate Plastic	1/8	BSPT	Female	2 7/8"	1 7/16"	0000000	000000	0000000	0000
1/2	1/2	10.6 scfm @ 14.7 psi	29.5 in. of Hg	140°	8 1/16"	2 3/4"	90%	2.8	Polycarbonate Plastic	1/8	BSPT	Female	2 7/8"	1 7/16"	0000000	000000	0000000	0000
3/4	3/4	17.6 scfm @ 14.7 psi	29.5 in. of Hg	140°	11 3/16"	3 1/2"	90%	2.8	Polycarbonate Plastic	1/8	BSPT	Female	3 3/8"	1 5/8"	0000000	000000	0000000	0000
1	1	17.6 scfm @ 14.7 psi	29.5 in. of Hg	140°	11 3/16"	3 1/2"	90%	2.8	Polycarbonate Plastic	1/8	BSPT	Female	3 3/8"	1 5/8"	0000000	000000	0000000	0000

Replacement Elements

Polybutylene Plastic
Ht.	OD	Filter Efficiency		Each
1 3/4"	1 3/16"	90%	0000000	000000
2 7/8"	1 7/16"	90%	0000000	00000
3 3/8"	1 5/8"	90%	0000000	00000

Replacement Bowls

Polycarbonate Plastic
Capacity, fl. oz.	Guard Material		Each
1	Steel	0000000	000000
2.8	Steel	0000000	00000

Replacement O-Rings

For Air Separator Dia.	Material		Each
2 1/16"	Buna-N Rubber	0000000	00000
2 3/4", 3 1/2"	Buna-N Rubber	0000000	000

High-Vacuum Air-Intake Filters

Install these filters between your high-vacuum chamber and the inlet of your pump to remove dust, water vapor, and other contaminants from the system and protect the pump. Commonly used in vacuum-furnace and coating applications, they have a polyester filter element that traps particles as small as 5 microns. All filters have been helium-leak tested to ensure quality. When the filter element becomes clogged, you can replace it.

Quick-clamp connections are also known as KF, QF, and NW connections; they require a ring and quick clamp (sold separately) to complete the connection.

Claw-clamp connections are also known as ISO-K connections; use a ring and multiple claw clamps (sold separately) to secure. Double-claw clamps attach to the grooves on the fittings. Single-claw clamps have a clamp on one end and an exposed bolt on the other. Thread the bolt-end directly into the body of pumps, valves, or other high-vacuum components.

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

Air-Intake Filters

Filter

Air-Intake Filters
						O'all				Element				Replacement Elements
Trade Number	Flange OD	For Tube OD	Max. Flow Rate	Max. Vacuum	Temp. Range, °F	Ht.	Dia.	Removes Particle Size Down To, microns	Filter Efficiency	Ht.	OD		Each		Each
Quick-Clamp (ISO-KF) Connection—Polyester Plastic Element
16	1.18"	3/4"	23 scfm @ 14.7 psi	1 × 10 ^-3 torr @ 72° F	-15° to 220°	3 7/8"	3 3/4"	5	99%	2 11/16"	2 1/2"	0000000	0000000	0000000	000000
25	1.57"	1"	35 scfm @ 14.7 psi	1 × 10 ^-3 torr @ 72° F	-15° to 220°	4 3/8"	5 3/4"	5	99%	2 3/4"	3 7/8"	0000000	000000	0000000	00000
40	2.16"	1 1/2"	80 scfm @ 14.7 psi	1 × 10 ^-3 torr @ 72° F	-15° to 220°	7 3/16"	7 3/8"	5	99%	4 3/4"	5"	0000000	000000	0000000	00000
50	2.95"	2"	175 scfm @ 14.7 psi	1 × 10 ^-3 torr @ 72° F	-15° to 220°	11 11/16"	8 3/4"	5	99%	8 3/4"	5 7/8"	0000000	000000	0000000	00000
Claw-Clamp (ISO-K) Connection—Polyester Plastic Element
63	3.74"	2 1/2"	175 scfm @ 14.7 psi	1 × 10 ^-3 torr @ 72° F	-15° to 220°	11 11/16"	8 3/4"	5	99%	8 3/4"	5 7/8"	0000000	000000	0000000	00000
100	5.12"	4"	300 scfm @ 14.7 psi	1 × 10 ^-3 torr @ 72° F	-15° to 220°	16 1/8"	13 1/4"	5	99%	10"	9 1/4"	0000000	00000000	0000000	000000

Rings

Ring

				Material
Trade Number	For Flange OD	For Tube OD	High Vacuum Connection Type	O-Ring	Inner Ring	Max. Vacuum	Max. Temp., °F		Each
Quick-Clamp Connection
16	1.18"	3/4"	ISO-KF	Fluoroelastomer Rubber	304 Stainless Steel	1 × 10 ^-7 torr @ 72° F	300°	00000000	00000
25	1.57"	1"	ISO-KF	Fluoroelastomer Rubber	304 Stainless Steel	1 × 10 ^-7 torr @ 72° F	300°	0000000	0000
40	2.16"	1 1/2"	ISO-KF	Fluoroelastomer Rubber	304 Stainless Steel	1 × 10 ^-7 torr @ 72° F	300°	0000000	00000
50	2.95"	2"	ISO-KF	Fluoroelastomer Rubber	304 Stainless Steel	1 × 10 ^-7 torr @ 72° F	300°	0000000	00000
Claw-Clamp Connection
63	3.74"	2 1/2"	ISO-K	Viton® Fluoroelastomer Rubber	304 Stainless Steel	1 × 10 ^-9 torr @ 72° F	400°	0000000	00000
100	5.12"	4"	ISO-K	Viton® Fluoroelastomer Rubber	304 Stainless Steel	1 × 10 ^-9 torr @ 72° F	400°	0000000	00000

Clamps

Clamp with Wing Nut

Double-Claw Clamp

Single-Claw Clamp

Quick-Clamp Connection—Clamp with Wing Nut
Trade Number	For Flange OD	For Tube OD	High Vacuum Connection Type	Material	Max. Vacuum		Each
10, 16	1.18"	1/2", 3/4"	ISO-KF	Aluminum	1 × 10 ^-7 torr @ 72° F	00000000	00000
25	1.57"	1"	ISO-KF	Aluminum	1 × 10 ^-7 torr @ 72° F	0000000	00000
40	2.16"	1 1/2"	ISO-KF	Aluminum	1 × 10 ^-7 torr @ 72° F	0000000	00000
50	2.95"	2"	ISO-KF	Aluminum	1 × 10 ^-7 torr @ 72° F	0000000	00000
Claw-Clamp Connection—Double-Claw Clamp with Bolt
63, 80, 100	3.74", 4.33", 5.12"	2 1/2", 3", 4"	ISO-K	Aluminum	1 × 10 ^-9 torr @ 72° F	0000000	0000
Claw-Clamp Connection—Single-Claw Clamp with Bolt
63, 80, 100	3.74", 4.33", 5.12"	2 1/2", 3", 4"	ISO-K	Aluminum	1 × 10 ^-9 torr @ 72° F	0000000	0000

Replacement O-Rings

Buna-N Rubber
For Filter O'all Dia.		Each
3 3/4"	0000000	00000
5 3/4", 5 7/8"	0000000	0000
7 5/16", 7 3/8"	0000000	0000
8 3/4"	0000000	00000
13 1/4"	0000000	00000

Replacement Clips

		Each
	0000000	00000

Clear-View Vacuum-Rated Air-Intake Filters

These filters have a clear housing so you can monitor collecting debris without stopping flow. Typically used on vacuum pumps, they ensure that clean air is going in and coming out of your system.

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

Filters
						O'all			Element						Repl. Elements
Pipe Size	Thread Type	Gender	Max. Flow Rate	Max. Vacuum	Max. Temp., °F	Ht.	Dia.	Removes Particle Size Down To, microns	Ht.	ID	OD	Material		Each		Each
3/4	NPT	Female	4 scfm @ 14.7 psi	29.9 in. of Hg	125°	9 1/4"	5 1/2"	50	4 1/2"	1"	2 3/4"	304 Stainless Steel	000000	0000000	000000	000000
3/4	NPT	Female	15 scfm @ 14.7 psi	29.9 in. of Hg	125°	14 1/8"	5 1/2"	50	9 1/2"	1"	2 3/4"	304 Stainless Steel	000000	000000	000000	00000

Vacuum-Rated Air-Intake Filters

Typically used on vacuum pumps, these filters ensure that clean air is going in and coming out of your system. Install them on the inlet to stop dust from entering your equipment.

Replacement elements are sold separately. HEPA elements have greater efficiency for high-purity applications, but they reduce the maximum flow rate of your filter. Polyester and fiberglass are more durable than paper.

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

Air-Intake Filters

							O'all				Element
	Pipe Size	Thread Type	Gender	Max. Flow Rate	Max. Vacuum	Max. Temp., °F	Ht.	Dia.	Removes Particle Size Down To, microns	Filter Efficiency	Ht.	ID	OD	Material		Each
A	1/2	NPT	Female	15 scfm @ 14.7 psi	29.9 in. of Hg	200°	12 3/4"	3 5/8"	10	Not Rated	9 11/16"	1 1/16"	2 9/16"	Polyester Plastic	0000000	0000000
A	3/4	NPT	Female	26 scfm @ 14.7 psi	29.9 in. of Hg	200°	12 3/4"	3 5/8"	10	Not Rated	9 11/16"	1 1/16"	2 9/16"	Polyester Plastic	0000000	000000
A	1	NPT	Female	40 scfm @ 14.7 psi	29.9 in. of Hg	200°	12 3/4"	3 5/8"	10	Not Rated	9 11/16"	1 1/16"	2 9/16"	Polyester Plastic	0000000	00000000
B	2	NPT	Female	175 scfm	29.9 in. of Hg	220°	13"	9"	5	Not Rated	8 3/4"	3 1/2"	5 7/8"	Polyester Plastic	0000000	000000
B	4	NPT	Female	520 scfm	29.9 in. of Hg	220°	18 7/8"	13 1/2"	5	Not Rated	9 5/8"	4 3/4"	7 7/8"	Polyester Plastic	0000000	00000000
C	3/8	NPT	Female	18 scfm	29.9 in. of Hg	220°	3 5/8"	3 3/4"	5	99%	2 11/16"	1 1/2"	2 1/2"	Polyester Plastic	0000000	00000
C	1/2	NPT	Female	18 scfm	29.9 in. of Hg	220°	3 5/8"	3 3/4"	5	99%	2 11/16"	1 1/2"	2 1/2"	Polyester Plastic	0000000	00000
C	1/2	NPT	Female	20 scfm	29.9 in. of Hg	220°	4 1/8"	5 7/8"	5	99%	2 3/4"	2 3/8"	3 7/8"	Polyester Plastic	0000000	000000
C	3/4	NPT	Female	24 scfm	29.9 in. of Hg	220°	3 5/8"	3 3/4"	5	99%	2 11/16"	1 1/2"	2 1/2"	Polyester Plastic	0000000	000000
C	3/4	NPT	Female	25 scfm	29.9 in. of Hg	220°	4 1/8"	5 7/8"	5	99%	2 3/4"	2 3/8"	3 7/8"	Polyester Plastic	0000000	000000
C	1	NPT	Female	40 scfm	29.9 in. of Hg	220°	6 3/4"	7 5/16"	5	99%	4 3/4"	2 9/16"	5"	Polyester Plastic	0000000	000000
C	1 1/4	NPT	Female	60 scfm	29.9 in. of Hg	220°	6 3/4"	7 5/16"	5	99%	4 3/4"	2 9/16"	5"	Polyester Plastic	0000000	000000
C	1 1/2	NPT	Female	80 scfm	29.9 in. of Hg	220°	6 3/4"	7 5/16"	5	99%	4 3/4"	2 9/16"	5"	Polyester Plastic	0000000	000000
C	2	NPT	Female	175 scfm	29.9 in. of Hg	220°	10"	8 3/4"	5	99%	8 3/4"	3 1/2"	5 7/8"	Polyester Plastic	0000000	000000
C	2 1/2	NPT	Female	210 scfm	29.9 in. of Hg	220°	10 1/2"	8 3/4"	5	99%	8 3/4"	3 1/2"	5 7/8"	Polyester Plastic	0000000	000000
C	3	NPT	Female	300 scfm	29.9 in. of Hg	220°	15 3/4"	13 1/4"	5	99%	10"	4 7/8"	9 1/4"	Polyester Plastic	0000000	000000
D	3	NPT	Male	300 scfm	29.9 in. of Hg	220°	27 1/4"	14"	5	99%	9 5/8"	4 3/4"	7 7/8"	Polyester Plastic	0000000	00000000
D	4	NPT	Male	520 scfm	29.9 in. of Hg	220°	27 1/4"	14"	5	99%	9 5/8"	4 3/4"	7 7/8"	Polyester Plastic	0000000	00000000

Replacement Clips for Styles B and C

0000000

Each

00000

Replacement Elements

Paper
Ht.	ID	OD	Housing Material	Removes Particle Size Down To, microns	Filter Efficiency		Each
2 11/16"	1 1/2"	2 1/2"	Carbon Steel	2	99%	0000000	000000
2 3/4"	2 3/8"	3 7/8"	Carbon Steel	2	99%	0000000	0000
4 3/4"	2 9/16"	5"	Carbon Steel	2	99%	0000000	00000
8 3/4"	3 1/2"	5 7/8"	Carbon Steel	2	99%	0000000	00000
9 5/8"	4 3/4"	7 7/8"	Carbon Steel and Plastisol	2	99%	0000000	00000
10"	4 7/8"	9 1/4"	Carbon Steel	2	99%	0000000	00000
Polyester Plastic
2 11/16"	1 1/2"	2 1/2"	Carbon Steel	5	99%	0000000	00000
2 3/4"	2 3/8"	3 7/8"	Carbon Steel	5	99%	0000000	00000
4 3/4"	2 9/16"	5"	Carbon Steel	5	99%	0000000	00000
8 3/4"	3 1/2"	5 7/8"	Carbon Steel	5	99%	0000000	00000
9 5/8"	4 3/4"	7 7/8"	Carbon Steel and Plastisol	5	99%	0000000	00000
9 11/16"	1 1/16"	2 9/16"	Carbon Steel	10	Not Rated	0000000	000000
10"	4 7/8"	9 1/4"	Carbon Steel	5	99%	0000000	000000
HEPA Polyester Plastic and Fiberglass
2 11/16"	1 1/2"	2 1/2"	Carbon Steel	0.3	99.97%	0000000	00000
2 3/4"	2 3/8"	3 7/8"	Carbon Steel	0.3	99.97%	0000000	00000
4 3/4"	2 9/16"	5"	Carbon Steel	0.3	99.97%	0000000	00000
8 3/4"	3 1/2"	5 7/8"	Carbon Steel	0.3	99.97%	0000000	000000
9 5/8"	4 3/4"	7 7/8"	Carbon Steel	0.3	99.97%	0000000	000000
10"	4 7/8"	9 1/4"	Carbon Steel	0.3	99.97%	0000000	000000

Replacement O-Rings

Buna-N Rubber
For Filter O'all Dia.		Each
3 3/4"	0000000	00000
5 3/4", 5 7/8"	0000000	0000
7 5/16", 7 3/8"	0000000	0000
8 3/4"	0000000	00000
13 1/4"	0000000	00000
14"	0000000	00000

Compact Vacuum-Rated Air-Intake Filters

Use one of these compact filters in a tight spot, or combine up to ten for a manifold application. Typically used on vacuum pumps, they ensure that clean air is going in and coming out of your system.

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

						O'all				Element
Pipe Size	Thread Type	Gender	Max. Flow Rate	Max. Vacuum	Max. Temp., °F	Ht.	Wd.	Lg.	Removes Particle Size Down To, microns	Ht.	Lg.	Wd.	Material		Each
1/8	NPT	Female	1.8 scfm @ 14.7 psi	29.8 in. of Hg	140°	2 11/16"	11/16"	2 3/4"	30	1 11/16"	2 1/8"	7/16"	Polyester Plastic	0000000	000000
1/4	NPT	Female	7.1 scfm @ 14.7 psi	29.8 in. of Hg	140°	2 11/16"	1 1/8"	2 3/4"	30	1 5/8"	2 3/16"	7/8"	Polyester Plastic	0000000	00000

Replacement Elements

Polyester Plastic
Ht.	Lg.	Wd.	Material	Removes Particle Size Down To, microns		Each
1 5/8"	2 3/16"	7/8"	Polyester Plastic	30	0000000	000000
1 11/16"	2 1/8"	7/16"	Polyester Plastic	30	0000000	0000

Water Aspirator Pumps

Create vacuum suction quickly—by running water through the body of these aspirator pumps, you can draw liquids and gases in through the side arm. They’re often used in labs for vacuum filtration and picking up spilled liquids. Made of HDPE, their housing resists corrosive chemicals such as filtrates and acids. Run water through these pumps by connecting them to your faucet; they’re commonly known as faucet aspirators. They have a removable barbed tube connector that you can leave attached to your vacuum tubing and connect to the pump only when you’re using it. To prevent water backflow, there’s an internal check valve. These pumps come with polyethylene tubing to discharge water and chemicals without splashing; the tubing is chemical resistant.

				Suction		Intake			Discharge		Overall
Flow Rate, gpm	Maximum Vacuum, in. of Hg	Minimum Operating Pressure, psi	Temperature Range, °F	For Tube ID	Gender	Pipe Size	Thread Type	Gender	Outlet Connection Type	Gender	Length	Width	Includes		Each
1.5	27	11	-140° to 240°	1/4", 5/16", 3/8"	Male	3/8	NPT	Male	Open	Female	3"	3"	4 1/2" Length of 3/8" OD Polyethylene Tubing	00000000	000000