1/2 Pipe Size Expansion Plugs

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Less than 1"

1" to 4.99"

5" to 9.99"

Maximum Air Back Pressure

Expansion Plug Type

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Overall Height

With Bypass

Bypass Connection Port

Bypass Gender

Handle Material

Maximum Temperature

Maximum Water Back Pressure

Less than 50 ft. of head

50 ft. of head to 99 ft. of head

100 ft. of head to 199 ft. of head

200 ft. of head to 249 ft. of head

250 ft. of head or greater

System of Measurement

Bypass Thread Type

Seal Material

Bypass Pipe Size

Bypass Cap Material

Export Control Classification Number (ECCN)

Material

REACH

RoHS

Compliant with Exemptions

Not Compliant

DFARS Specialty Metals

Minimum Temperature

Stem Material

Deflated Diameter

31 Products

Wing Nut Expansion Plugs

Twist the wing nut on these plugs to expand the seal and close off pipe openings. Maximum air back pressure is the amount of pressure a plug can withstand without moving. Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.

Style A aren’t recommended for pressure testing, so they’re often used as a dust cover. Style C are the easiest to grip. The handle has more surface area than that of our other styles. Style E have an eyebolt, so you can tether or hang them for convenient storage. Style F have flanges of the same size, so you can install them as deep as needed. Rated for higher pressures than our other styles, they’re ideal for leak testing.

Plugs with a zinc-plated steel plate have fair corrosion resistance. Plugs with a stainless steel plate have excellent corrosion resistance. Plugs with a plastic plate weigh less than plugs with a metal plate.

For Pipe		Max. Back Pressure
Size	ID	Air, psi	Water, ft. of head	O'all Ht.	Temp. Range, °F	Seal Material		Each
Style A
Stainless Steel Plate
1/2	0.48"-0.55"	10	24	1 11/16"	0° to 175°	Neoprene Rubber	0000000	000000
Style C
White Plastic Plate
1/2	0.49"-0.60"	100	230	2 3/8"	-40° to 180°	Natural Rubber	0000000	00000
Style E
Zinc-Plated Steel Plate
1/2	0.51"-0.60"	35	80	4"	-20° to 225°	Neoprene Rubber	0000000	00000
Style F
Zinc-Plated Steel Plate
1/2	0.50"-0.56"	180	415	1 7/8"	-20° to 125°	Natural Rubber	00000000	0000

Hex-Nut Expansion Plugs

Tighten the nut on these plugs to expand the seal and close off pipe openings. Maximum air back pressure is the amount of pressure a plug can withstand without moving. Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.

Plugs with a stainless steel plate have excellent corrosion resistance.

For Pipe		Max. Back Pressure
Size	ID	Air, psi	Water, ft. of head	O'all Ht.	Temp. Range, °F	Seal Material		Each
Style A
Stainless Steel Plate
1/2	0.47"-0.55"	10	24	1 1/4"	-40° to 250°	Neoprene Rubber	0000000	000000

T-Handle Expansion Plugs

Twist the easy-grip T-handle on these plugs to expand the seal and close off pipe openings. Maximum air back pressure is the amount of pressure a plug can withstand without moving. Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.

Plugs with a stainless steel plate have excellent corrosion resistance.

For Pipe		Max. Back Pressure
Size	ID	Air, psi	Water, ft. of head	O'all Ht.	Temp. Range, °F	Seal Material		Each
Brass Handle
Stainless Steel Plate
1/2	0.48"-0.55"	10	24	1 7/8"	-40° to 250°	Neoprene Rubber	0000000	000000
Stainless Steel Handle
Stainless Steel Plate
1/2	0.48"-0.55"	10	24	1 7/8"	-40° to 250°	Neoprene Rubber	0000000	00000

Quick-Snap Expansion Plugs

Turn the cam handle to expand the seal, then snap the handle down to hold it in place and close off pipe openings. Maximum air back pressure is the amount of pressure a plug can withstand without moving. Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.

Plugs with a stainless steel plate have excellent corrosion resistance.

For Pipe		Max. Back Pressure
Size	ID	Air, psi	Water, ft. of head	O'all Ht.	Temp. Range, °F	Seal Material		Each
Brass Handle
Stainless Steel Plate
1/2	0.47"-0.55"	10	24	1 3/8"	-40° to 250°	Neoprene Rubber	0000000	000000
Stainless Steel Handle
Stainless Steel Plate
1/2	0.47"-0.55"	10	24	1 3/8"	-40° to 250°	Neoprene Rubber	0000000	00000

Expansion Plugs with Bypass

Use the bypass tube on these plugs to add air, water, and other fluid to your pipeline or to relieve pressure while testing. The seal expands to temporarily close off pipe openings. Maximum air back pressure is the amount of pressure a plug can withstand without moving. Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.

For Styles A-E and H-L, twist the wing nut to expand the seal.

Styles A and B have an NPS threaded bypass for routing moderately pressurized fluids.

Styles C and D have an NPT threaded bypass for making leak-tight connections.

Styles E and F have a barbed bypass for quick connections to tubing.

Style H have a bypass with BSPP threads, also known as G threads, for making leak-tight connections.

For Pipe		Max. Back Pressure				Material		Bypass
Size	ID	Air, psi	Water, ft. of head	O'all Ht.	Temp. Range, °F	Seal	Bypass Cap	Pipe Size	Thread Type	Gender	For Tube ID	Tube Connection Type		Each
Style A
Aluminum Stem
4	3.85"-4.25"	35	81	8 1/4"	-20° to 170°	Natural Rubber	Metal	1/2	NPS	Male	__	__	0000000	000000
Style B
Steel Stem
6	5.80"-6.50"	20	46	12"	35° to 210°	Natural Rubber	Metal	1/2	NPS	Male	__	__	0000000	000000
Style C
Iron Stem
1/2	0.47"-0.50"	Not Rated	46	4 1/4"	30° to 150°	Natural Rubber	Metal	1/16	NPT	Male	__	__	0000000	00000
2	1.75"-2.00"	Not Rated	34	10 3/8"	30° to 150°	Natural Rubber	Metal	1/2	NPT	Male	__	__	0000000	00000
3	2.75"-3.00"	Not Rated	34	10 1/2"	30° to 150°	Natural Rubber	Metal	1/2	NPT	Male	__	__	0000000	00000
4	3.63"-4.00"	Not Rated	23	10 1/8"	30° to 150°	Natural Rubber	Metal	1/2	NPT	Male	__	__	0000000	00000
5	4.50"-5.00"	Not Rated	23	12 5/8"	30° to 150°	Natural Rubber	Metal	1/2	NPT	Male	__	__	0000000	00000
6	5.50"-6.00"	Not Rated	23	12 1/2"	30° to 150°	Natural Rubber	Metal	1/2	NPT	Male	__	__	0000000	00000
8	7.50"-8.00"	Not Rated	4	14 3/4"	30° to 150°	Natural Rubber	Metal	1/2	NPT	Male	__	__	0000000	00000
10	9.50"-10.00"	Not Rated	4	14 7/8"	30° to 150°	Natural Rubber	Metal	1/2	NPT	Male	__	__	0000000	000000
Style D
Plastic Stem
1 1/2	1.42"-1.93"	50	115	4 1/2"	-40° to 180°	Natural Rubber	Plastic	1/2	NPT	Male	__	__	0000000	00000
2	1.93"-2.36"	40	92	4 1/2"	-40° to 180°	Natural Rubber	Plastic	1/2	NPT	Male	__	__	0000000	00000
2 1/2	2.40"-2.76"	30	69	4 1/2"	-40° to 180°	Natural Rubber	Plastic	1/2	NPT	Male	__	__	0000000	00000
3	2.87"-3.31"	15	34	4 1/2"	-40° to 180°	Natural Rubber	Plastic	1/2	NPT	Male	__	__	0000000	00000
4	3.54"-4.25"	15	34	4 1/2"	-40° to 180°	Natural Rubber	Plastic	1/2	NPT	Male	__	__	0000000	00000
5	4.72"-5.37"	12	27	4 1/2"	-40° to 180°	Natural Rubber	Plastic	1/2	NPT	Male	__	__	0000000	00000
6	5.50"-6.29"	10	23	4 1/2"	-40° to 180°	Natural Rubber	Plastic	1/2	NPT	Male	__	__	0000000	00000
Style E
Stainless Steel Stem
1/2	0.48"-0.53"	10	24	3 1/2"	-40° to 250°	Neoprene Rubber	__	__	__	__	1/4"	Barbed	0000000	000000
Style H
Plastic Stem
1/2	0.49"-0.60"	100	231	2 15/16"	-40° to 180°	Natural Rubber	Plastic	1/8	BSPP	Male	__	__	0000000	00000

Air-Inflatable Plugs with Bypass

Conform to wide and out-of-round pipes with these inflatable plugs. Also known as pneumatic plugs, they're designed for temporary seals since they can lose pressure over time. Use the bypass tube on these plugs to add air, water, and other fluid to your pipeline or to relieve pressure while testing.

Inflate with a hand pump (sold separately); an air compressor may overinflate the plug and cause damage. Tether the plugs using either the eyebolt or chain/ring so they don't get lost or stuck in your pipes during installation. Pull on the tether for quick and easy removal once testing is complete.

Maximum air back pressure is the amount of pressure a plug can withstand without moving.

Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.

With Chain

For Pipe		Deflated			Max. Back Pressure			Bypass				Material
Size	ID	Dia.	Ht.	Chain Lg., ft.	Air, psi	Water, ft. of head	Required Inflation Pressure, psi	Pipe Size	Thread Type	Gender	Temp. Range, °F	Seal	Chain/Ring		Each
3	2.62"-3.25"	2 1/2"	8"	1	22	50	40	1/2	NPT	Female	-20° to 125°	Natural Rubber	Zinc-Plated Steel	0000000	0000000

Deep-Reach Wing Nut Expansion Plugs

Stainless Steel
Plate With
Brass Stem

Insert these plugs deep within your pipe to temporarily block off a line. Twist their wing nut to expand the seal. Maximum air back pressure is the amount of pressure a plug can withstand without moving. Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.

Plugs with a stainless steel plate have excellent corrosion resistance.

For Pipe		Max. Back Pressure
Size	ID	Air, psi	Water, ft. of head	O'all Ht.	Temp. Range, °F	Seal Material		Each
Stainless Steel Plate with Brass Stem
1/2	0.50"-0.60"	17	40	11"	0° to 125°	Neoprene Rubber	0000000	000000

Deep-Reach Hex Nut Expansion Plugs with Bypass

Plug your pipe from the inside. Insert these expansion plugs deep into your pipe, and then tighten the nut on the stem. Use the bypass tube to add air, water, and fluid or relieve back pressure. Maximum air back pressure is the amount of pressure a plug can withstand without moving. Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.

For Pipe		Max. Back Pressure					Bypass
Size	ID	Air, psi	Water, ft. of head	O'all Ht.	Temp. Range, °F	Seal Material	Pipe Size	Thread Type	Gender		Each
Zinc-Plated Steel Stem
1/2	0.62"-0.64"	250	576	4 3/8"	-20° to 225°	Neoprene Rubber	1/8	NPT	Male	0000000	0000000