Double Sphere Expansion Joints

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57 Products

About Pipe Expansion Joints

Select the right expansion joint by measuring the size of your pipes and comparing types of joint movement.

Pipe Expansion Joints with Flanged Ends for High Vibration

Shown Installed on a Flanged Pipe

These expansion joints have a double-bulb design for extra movement and vibration absorption. The flanged ends rotate for easy bolt hole alignment during installation. They mate with a same-size flat-surface Class 150 flange without the need for a gasket. Joints have a flexible body that is reinforced with nylon for added strength.

Neoprene


Expansion Joint	Limit Rod

Limit Rod Sets—Attach limit rod sets (sold separately) to the flanges to prevent overextension where anchoring is insufficient. To accommodate the thickness of the limit rod mounting plate, use bolts that are _7/8" longer than the bolts connecting the expansion joint to the pipe flange. Each set of limit rods requires eight bolts (not included).

Pipe Expansion Joints																				Limit Rod Sets
				Distance										Threaded Bolt Holes			Unthreaded Bolt Holes
Flange OD	Pipe Size	Lg.	No. of Bolt Holes	Compression	Expansion	Offset	Max. Pressure @ Temp.	Expansion Joint Type	Flange Material	Reinforcement Material	For Use With	Temp. Range, ° F	Max. Vacuum @ Temp.	Bolt Hole Thread Size		Each	Bolt Hole Size		Each		Pair
5"	1 1/2	7"	4	2"	1 3/16"	1 3/4"	220 psi @ 72° F	Double Bulb	Zinc-Plated Steel	Nylon	Grain Alcohol, Nonabrasive Slurries, Water	-10 to 220	26 in. Hg @ 72° F	1/2"-13	6819K61	0000000	5/8"	6819K26	0000000	6819K72	000000
6"	2	7"	4	2"	1 3/16"	1 3/4"	220 psi @ 72° F	Double Bulb	Zinc-Plated Steel	Nylon	Grain Alcohol, Nonabrasive Slurries, Water	-10 to 220	26 in. Hg @ 72° F	5/8"-11	6819K62	000000	3/4"	6819K27	000000	6819K73	00000
7"	2 1/2	7"	4	2"	1 3/16"	1 3/4"	220 psi @ 72° F	Double Bulb	Zinc-Plated Steel	Nylon	Grain Alcohol, Nonabrasive Slurries, Water	-10 to 220	26 in. Hg @ 72° F	5/8"-11	6819K63	000000	3/4"	6819K28	000000	6819K74	00000
7 1/2"	3	7"	4	2"	1 3/16"	1 3/4"	220 psi @ 72° F	Double Bulb	Zinc-Plated Steel	Nylon	Grain Alcohol, Nonabrasive Slurries, Water	-10 to 220	26 in. Hg @ 72° F	5/8"-11	6819K64	000000	3/4"	6819K29	000000	6819K75	00000
9"	4	9"	8	2"	1 3/8"	1 9/16"	220 psi @ 72° F	Double Bulb	Zinc-Plated Steel	Nylon	Grain Alcohol, Nonabrasive Slurries, Water	-10 to 220	26 in. Hg @ 72° F	5/8"-11	6819K65	000000	3/4"	6819K31	000000	6819K76	00000
10"	5	9"	8	2"	1 3/8"	1 9/16"	220 psi @ 72° F	Double Bulb	Zinc-Plated Steel	Nylon	Grain Alcohol, Nonabrasive Slurries, Water	-10 to 220	26 in. Hg @ 72° F	3/4"-10	6819K66	000000	7/8"	6819K52	000000	6819K77	000000
11"	6	9"	8	2"	1 3/8"	1 9/16"	220 psi @ 72° F	Double Bulb	Zinc-Plated Steel	Nylon	Grain Alcohol, Nonabrasive Slurries, Water	-10 to 220	26 in. Hg @ 72° F	3/4"-10	6819K67	000000	7/8"	6819K53	000000	6819K78	000000
13 1/2"	8	13"	8	2 3/8"	1 3/8"	1 3/8"	220 psi @ 72° F	Double Bulb	Zinc-Plated Steel	Nylon	Grain Alcohol, Nonabrasive Slurries, Water	-10 to 220	26 in. Hg @ 72° F	3/4"-10	6819K68	000000	7/8"	6819K54	000000	6819K79	000000
16"	10	13"	12	2 3/8"	1 3/8"	1 3/8"	220 psi @ 72° F	Double Bulb	Zinc-Plated Steel	Nylon	Grain Alcohol, Nonabrasive Slurries, Water	-10 to 220	26 in. Hg @ 72° F	7/8"-9	6819K69	000000	1"	6819K55	000000	6819K92	000000
19"	12	13"	12	2 3/8"	1 3/8"	1 3/8"	220 psi @ 72° F	Double Bulb	Zinc-Plated Steel	Nylon	Grain Alcohol, Nonabrasive Slurries, Water	-10 to 220	26 in. Hg @ 72° F	7/8"-9	6819K71	00000000	1"	6819K56	00000000	6819K93	000000

EPDM


Expansion Joint	Limit Rod

Pipe Expansion Joints																	Limit Rod Sets
				Distance										Unthreaded Bolt Holes
Flange OD	Pipe Size	Lg.	No. of Bolt Holes	Compression	Expansion	Offset	Max. Pressure @ Temp.	Expansion Joint Type	Flange Material	Reinforcement Material	For Use With	Temp. Range, ° F	Max. Vacuum @ Temp.	Bolt Hole Size		Each		Pair
5"	1 1/2	7"	4	2"	1 3/16"	1 3/4"	220 psi @ 72° F	Double Bulb	Zinc-Plated Steel	Nylon	Alcohol, Water	-20 to 250	26 in. Hg @ 72° F	5/8"	6819K81	0000000	6819K72	000000
6"	2	7"	4	2"	1 3/16"	1 3/4"	220 psi @ 72° F	Double Bulb	Zinc-Plated Steel	Nylon	Alcohol, Water	-20 to 250	26 in. Hg @ 72° F	3/4"	6819K82	000000	6819K73	00000
7"	2 1/2	7"	4	2"	1 3/16"	1 3/4"	220 psi @ 72° F	Double Bulb	Zinc-Plated Steel	Nylon	Alcohol, Water	-20 to 250	26 in. Hg @ 72° F	3/4"	6819K83	000000	6819K74	00000
7 1/2"	3	7"	4	2"	1 3/16"	1 3/4"	220 psi @ 72° F	Double Bulb	Zinc-Plated Steel	Nylon	Alcohol, Water	-20 to 250	26 in. Hg @ 72° F	3/4"	6819K84	000000	6819K75	00000
9"	4	9"	8	2"	1 3/8"	1 9/16"	220 psi @ 72° F	Double Bulb	Zinc-Plated Steel	Nylon	Alcohol, Water	-20 to 250	26 in. Hg @ 72° F	3/4"	6819K85	000000	6819K76	00000
10"	5	9"	8	2"	1 3/8"	1 9/16"	220 psi @ 72° F	Double Bulb	Zinc-Plated Steel	Nylon	Alcohol, Water	-20 to 250	26 in. Hg @ 72° F	7/8"	6819K86	000000	6819K77	000000
11"	6	9"	8	2"	1 3/8"	1 9/16"	220 psi @ 72° F	Double Bulb	Zinc-Plated Steel	Nylon	Alcohol, Water	-20 to 250	26 in. Hg @ 72° F	7/8"	6819K87	000000	6819K78	000000
13 1/2"	8	13"	8	2 3/8"	1 3/8"	1 3/8"	220 psi @ 72° F	Double Bulb	Zinc-Plated Steel	Nylon	Alcohol, Water	-20 to 250	26 in. Hg @ 72° F	7/8"	6819K88	000000	6819K79	000000
16"	10	13"	12	2 3/8"	1 3/8"	1 3/8"	220 psi @ 72° F	Double Bulb	Zinc-Plated Steel	Nylon	Alcohol, Water	-20 to 250	26 in. Hg @ 72° F	1"	6819K89	000000	6819K92	000000
19"	12	13"	12	2 3/8"	1 3/8"	1 3/8"	220 psi @ 72° F	Double Bulb	Zinc-Plated Steel	Nylon	Alcohol, Water	-20 to 250	26 in. Hg @ 72° F	1"	6819K91	00000000	6819K93	000000

Pipe Expansion Joints with Threaded Ends

Connect male threaded pipe to these expansion joints to add a point of flexibility in your line that reduces stress, vibration, and noise. These joints have a double-bulb design that absorbs more movement and vibration than other expansion joints. Made of neoprene, they’re more abrasion resistant than silicone rubber joints. Their flexible body is reinforced with nylon for added strength.

Neoprene

Image of Product. Front orientation. Pipe Expansion Joints. Pipe Expansion Joints with Threaded Ends.

		Distance										NPT Female
Pipe Size	Lg.	Compression	Expansion	Offset	Max. Pressure @ Temp.	Expansion Joint Type	Fitting Material	Reinforcement Material	For Use With	Temp. Range, ° F	Max. Vacuum @ Temp.		Each
3/4	8"	7/8"	1/4"	7/8"	150 psi @ 72° F	Double Bulb	Iron	Nylon	Air, Grease, Oil, Water	0 to 240	16 in. Hg @ 72° F	5303N11	000000
1	8"	7/8"	1/4"	7/8"	150 psi @ 72° F	Double Bulb	Iron	Nylon	Air, Grease, Oil, Water	0 to 240	16 in. Hg @ 72° F	5303N12	00000
1 1/4	8"	7/8"	1/4"	7/8"	150 psi @ 72° F	Double Bulb	Iron	Nylon	Air, Grease, Oil, Water	0 to 240	16 in. Hg @ 72° F	5303N13	00000
1 1/2	8"	7/8"	1/4"	7/8"	150 psi @ 72° F	Double Bulb	Iron	Nylon	Air, Grease, Oil, Water	0 to 240	16 in. Hg @ 72° F	5303N14	000000
2	8"	7/8"	1/4"	7/8"	150 psi @ 72° F	Double Bulb	Iron	Nylon	Air, Grease, Oil, Water	0 to 240	16 in. Hg @ 72° F	5303N15	000000

Pipe Expansion Joints with Socket Connection for Plastic Pipe

Reduce stress, vibration, and noise in your plastic socket-connect piping system by creating a point of flexibility. These expansion joints have a double-bulb design, so they absorb even more movement and vibration than other expansion joints. Their body is EPDM that's reinforced with nylon for added strength.

Warning: Never use plastic pipe fittings and pipe with compressed air or gas.

For PVC Pipes About For PVC Pipes

Image of Product. Front orientation. Pipe Expansion Joints. Pipe Expansion Joints with Socket Connection for Plastic Pipe.

To attach joints, connect to unthreaded male socket-connect fittings or pipe using a PVC primer and cement (also known as solvent weld).

	Pipe Expansion Joints														Pipe Cement
				Distance
	Pipe Size	Socket Dp.	Lg.	Compression	Expansion	Offset	Expansion Joint Type	For Use With	Temp. Range, ° F	Max. Pressure @ Temp.	Max. Vacuum @ Temp.	For Pipe Schedule		Each		Each
EPDM



		3/4	1"	8 3/8"	7/8"	1/4"	7/8"	Double Bulb	Alcohol, Water	40 to 140	150 psi @ 72° F	26 in. Hg @ 72° F	80	4936N11	0000000	74605A911	00000


		1	1 1/8"	8 3/16"	7/8"	1/4"	7/8"	Double Bulb	Alcohol, Water	40 to 140	150 psi @ 72° F	26 in. Hg @ 72° F	80	4936N12	000000	74605A911	0000
		1 1/2	1 3/8"	8 5/8"	7/8"	1/4"	7/8"	Double Bulb	Alcohol, Water	40 to 140	150 psi @ 72° F	26 in. Hg @ 72° F	80	4936N13	000000	74605A911	0000
		2	1 1/2"	8 7/16"	7/8"	1/4"	7/8"	Double Bulb	Alcohol, Water	40 to 140	150 psi @ 72° F	26 in. Hg @ 72° F	80	4936N14	000000	74605A911	0000
		3	1 29/32"	10"	7/8"	1/4"	7/8"	Double Bulb	Alcohol, Water	40 to 140	150 psi @ 72° F	26 in. Hg @ 72° F	80	4936N15	00000000	74605A911	0000

For CPVC Pipes About For CPVC Pipes

To attach joints, connect to unthreaded male socket-connect fittings or pipe using a CPVC primer and cement (also known as solvent weld).

	Pipe Expansion Joints														Pipe Cement
				Distance
	Pipe Size	Socket Dp.	Lg.	Compression	Expansion	Offset	Expansion Joint Type	For Use With	Temp. Range, ° F	Max. Pressure @ Temp.	Max. Vacuum @ Temp.	For Pipe Schedule		Each		Each
EPDM



		3/4	1"	8 3/8"	7/8"	1/4"	7/8"	Double Bulb	Alcohol, Water	40 to 200	150 psi @ 72° F	26 in. Hg @ 72° F	80	4936N16	0000000	74605A31	000000


		1	1 1/8"	8 3/16"	7/8"	1/4"	7/8"	Double Bulb	Alcohol, Water	40 to 200	150 psi @ 72° F	26 in. Hg @ 72° F	80	4936N17	000000	74605A31	00000
		1 1/2	1 3/8"	8 5/8"	7/8"	1/4"	7/8"	Double Bulb	Alcohol, Water	40 to 200	150 psi @ 72° F	26 in. Hg @ 72° F	80	4936N18	000000	74605A31	00000
		2	1 1/2"	8 7/16"	7/8"	1/4"	7/8"	Double Bulb	Alcohol, Water	40 to 200	150 psi @ 72° F	26 in. Hg @ 72° F	80	4936N19	000000	74605A31	00000
		3	1 29/32"	10"	7/8"	1/4"	7/8"	Double Bulb	Alcohol, Water	40 to 200	150 psi @ 72° F	26 in. Hg @ 72° F	80	4936N21	00000000	74605A31	00000