Low-Pressure Stainless Steel Socket-Weld Pipe Fittings

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304 Stainless Steel

304/304L Stainless Steel

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304/304L Stainless Steel

316 Stainless Steel

316/316L Stainless Steel

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304/304L Stainless Steel

316 Stainless Steel

316/316L Stainless Steel

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Specifications Met

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

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2B999

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120 Products

About Pipe and Fittings

Measure your pipe and fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.

Fitting Type

Bridge the gap between pipe with different fitting connections

21 products

Fitting Type

Reducing Adapter

Join pipe of different sizes and fitting connections

5 products

Reducer

Transition between pipe of different sizes

9 products

Low-Pressure Stainless Steel Socket-Connect Pipe Fittings

The highest-quality socket-connect fittings available, these meet ANSI/MSS SP-114 standards for heat treating, material thickness, and marking. Also known as Pressure Class 150 fittings, they are designed for low-pressure applications. Socket-connect fittings are easier to weld than butt-weld fittings because the fitting doesn’t need to align perfectly to the pipe. Slide pipe into the socket and weld for a strong, permanent connection.

Straight Connectors

Socket Connect

304 Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

316 Stainless Steel—Fittings are the most corrosion resistant. They stand up to wet environments, just like 304 stainless steel fittings, but unlike 304 stainless steel, they will not corrode from salt water, chlorine solutions, and chemicals.

				304 Stainless Steel		316 Stainless Steel
	Pipe Size	Pressure Class	Max. Pressure @ Temp.		Each		Each
Socket Connect



		1/2	150	300 psi @ 72° F	4335T62	00000	43685K52	00000


		3/4	150	300 psi @ 72° F	4335T63	0000	43685K53	00000
		1	150	300 psi @ 72° F	4335T64	00000	43685K54	00000
		1 1/4	150	300 psi @ 72° F	4335T65	00000	43685K57	00000
		1 1/2	150	300 psi @ 72° F	4335T66	00000	43685K55	00000
		2	150	300 psi @ 72° F	4335T67	00000	43685K56	00000

Union Straight Connectors

Socket Connect, Weld Socket Female

(Exploded View)

Union fittings separate into three pieces so you can access your line without unthreading pipe connections.

304 Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

					304 Stainless Steel		316 Stainless Steel
	Pipe Size	Pressure Class	Body Shape	Max. Pressure @ Temp.		Each		Each
Socket Connect



		1/2	150	Hex	300 psi @ 72° F	4335T72	000000	43685K62	000000


		3/4	150	Hex	300 psi @ 72° F	4335T73	00000	43685K63	00000
		1	150	Hex	300 psi @ 72° F	4335T74	00000	43685K64	00000
		1 1/4	150	Hex	300 psi @ 72° F	4335T75	00000	43685K67	00000
		1 1/2	150	Hex	300 psi @ 72° F	4335T76	00000	43685K65	00000
		2	150	Hex	300 psi @ 72° F	4335T77	00000	43685K66	000000

90° Elbow Connectors

Socket Connect

304 Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

				304 Stainless Steel		316 Stainless Steel
	Pipe Size	Pressure Class	Max. Pressure @ Temp.		Each		Each
Socket Connect



		1/2	150	300 psi @ 72° F	4335T32	00000	43685K12	000000


		3/4	150	300 psi @ 72° F	4335T33	0000	43685K13	00000
		1	150	300 psi @ 72° F	4335T34	00000	43685K14	00000
		1 1/4	150	300 psi @ 72° F	4335T35	00000	43685K17	00000
		1 1/2	150	300 psi @ 72° F	4335T36	00000	43685K15	00000
		2	150	300 psi @ 72° F	4335T37	00000	43685K16	00000

45° Elbow Connectors

Socket

Connect

304 Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

				304 Stainless Steel		316 Stainless Steel
	Pipe Size	Pressure Class	Max. Pressure @ Temp.		Each		Each
Socket Connect



		1/2	150	300 psi @ 72° F	4335T42	00000	43685K22	000000


		3/4	150	300 psi @ 72° F	4335T43	00000	43685K23	00000
		1	150	300 psi @ 72° F	4335T44	00000	43685K24	00000
		1 1/4	150	300 psi @ 72° F	4335T45	00000	43685K27	00000
		1 1/2	150	300 psi @ 72° F	4335T46	00000	43685K25	00000
		2	150	300 psi @ 72° F	4335T47	00000	43685K26	00000

Tee Connectors

Socket Connect

304 Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

				304 Stainless Steel		316 Stainless Steel
	Pipe Size	Pressure Class	Max. Pressure @ Temp.		Each		Each
Socket Connect



		1/2	150	300 psi @ 72° F	4335T52	00000	43685K32	000000


		3/4	150	300 psi @ 72° F	4335T53	00000	43685K33	00000
		1	150	300 psi @ 72° F	4335T54	00000	43685K34	00000
		1 1/4	150	300 psi @ 72° F	4335T55	00000	43685K37	00000
		1 1/2	150	300 psi @ 72° F	4335T56	00000	43685K35	00000
		2	150	300 psi @ 72° F	4335T57	00000	43685K36	00000

Low-Pressure Stainless Steel Press-Socket Pipe Fittings

Press these fittings onto stainless steel pipe using a crimping tool for a permanent, leak-tight connection that's faster than threading or welding and doesn't require heat. Fittings have an internal stainless steel gripping ring and rubber O-ring that create a seal when crimped. They are designed to leak if fittings have not been crimped; a colored dot marks the leak path so it's easy to spot unsealed connections. All of these fittings are made of 304 stainless steel to resist corrosion from frequent exposure to water and fuels. They’re often used for water processing lines, heating and cooling systems, and fuel lines. They are comparable to Viega MegaPress fittings. Fittings meet ANSI/ASME B31 code requirements for use in pressure piping systems.

Straight Connectors

Straight

Connector with

Smooth Interior

Straight

Connector with

Center Stop

Center Stop Interior—Connectors with center stop have a small internal ridge that prevents the pipe from sliding too far into the fitting. Insert the pipe on each side of the connection up to the center stop to ensure a tight seal.

304 Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

			304 Stainless Steel
	Pipe Size	Certification	Max. Pressure @ Temp.		Each
Press-Socket Female







				Smooth Interior

				1/2	IAPMO Listed	125 psi @ 72° F	3319N135	000000


				3/4	IAPMO Listed	125 psi @ 72° F	3319N136	00000
				1	IAPMO Listed	125 psi @ 72° F	3319N137	00000
				1 1/2	IAPMO Listed	125 psi @ 72° F	3319N138	00000
				2	IAPMO Listed	125 psi @ 72° F	3319N139	00000




						Center Stop Interior

						1/2	IAPMO Listed	125 psi @ 72° F	3319N124	00000


						3/4	IAPMO Listed	125 psi @ 72° F	3319N125	00000
						1	IAPMO Listed	125 psi @ 72° F	3319N126	00000
						1 1/2	IAPMO Listed	125 psi @ 72° F	3319N127	00000
						2	IAPMO Listed	125 psi @ 72° F	3319N128	00000

Union Straight Connectors

Straight Union Connector

Union fittings separate into three pieces so you can access your line without unthreading pipe connections.

304 Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

				304 Stainless Steel
	Pipe Size	Body Shape	Certification	Max. Pressure @ Temp.		Each
Press-Socket Female



		1/2	Hex	IAPMO Listed	125 psi @ 72° F	3319N171	0000000


		3/4	Hex	IAPMO Listed	125 psi @ 72° F	3319N172	000000
		1	Hex	IAPMO Listed	125 psi @ 72° F	3319N173	000000
		1 1/2	Hex	IAPMO Listed	125 psi @ 72° F	3319N174	000000
		2	Hex	IAPMO Listed	125 psi @ 72° F	3319N175	000000

Straight Adapters

Female Press

Connect ×

Female Threaded

Female Press

Connect ×

Male Threaded

304 Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

	Pipe Size			304 Stainless Steel
	(A)	(B)	Certification	Max. Pressure @ Temp.		Each
Press-Socket Female × NPT Male



		1/2	1/2	IAPMO Listed	125 psi @ 72° F	3319N89	000000


		3/4	3/4	IAPMO Listed	125 psi @ 72° F	3319N92	00000
		1	1	IAPMO Listed	125 psi @ 72° F	3319N93	00000
		1 1/2	1 1/2	IAPMO Listed	125 psi @ 72° F	3319N94	00000
		2	2	IAPMO Listed	125 psi @ 72° F	3319N95	000000


		Press-Socket Female × NPT Female



				1/2	1/2	IAPMO Listed	125 psi @ 72° F	3319N113	00000


				3/4	3/4	IAPMO Listed	125 psi @ 72° F	3319N114	00000
				1	1	IAPMO Listed	125 psi @ 72° F	3319N115	00000
				1 1/2	1 1/2	IAPMO Listed	125 psi @ 72° F	3319N116	000000
				2	2	IAPMO Listed	125 psi @ 72° F	3319N117	000000

Straight Reducing Adapters

Straight Reducing

Adapter

304 Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

	Pipe Size			304 Stainless Steel
	(A)	(B)	Certification	Max. Pressure @ Temp.		Each
Press-Socket Female × NPT Male



		3/4	1/2	IAPMO Listed	125 psi @ 72° F	3319N91	000000

Straight Reducers

Straight Reducer

304 Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

	Pipe Size			304 Stainless Steel
	(A)	(B)	Certification	Max. Pressure @ Temp.		Each
Press-Socket Female × Press-Socket Female







				Center Stop Interior

				3/4	1/2	IAPMO Listed	125 psi @ 72° F	3319N146	000000


				1	3/4	IAPMO Listed	125 psi @ 72° F	3319N147	00000

90° Elbow Connectors

90° Elbow

Connector

304 Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

			304 Stainless Steel
	Pipe Size	Certification	Max. Pressure @ Temp.		Each
Press-Socket Female



		1/2	IAPMO Listed	125 psi @ 72° F	3319N211	000000


		3/4	IAPMO Listed	125 psi @ 72° F	3319N212	00000
		1	IAPMO Listed	125 psi @ 72° F	3319N213	00000
		1 1/2	IAPMO Listed	125 psi @ 72° F	3319N214	000000
		2	IAPMO Listed	125 psi @ 72° F	3319N215	000000

90° Elbow Adapters

90° Elbow Adapter

Female x male 90° elbow adapters are also known as street elbows.

304 Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

	Pipe Size			304 Stainless Steel
	(A)	(B)	Certification	Max. Pressure @ Temp.		Each
Press-Socket Male × Press-Socket Female



		1/2	1/2	IAPMO Listed	125 psi @ 72° F	3319N1	000000


		3/4	3/4	IAPMO Listed	125 psi @ 72° F	3319N2	00000
		1	1	IAPMO Listed	125 psi @ 72° F	3319N3	00000
		1 1/2	1 1/2	IAPMO Listed	125 psi @ 72° F	3319N4	000000
		2	2	IAPMO Listed	125 psi @ 72° F	3319N5	000000

45° Elbow Connectors

45° Elbow

Connector

304 Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

			304 Stainless Steel
	Pipe Size	Certification	Max. Pressure @ Temp.		Each
Press-Socket Female



		1/2	IAPMO Listed	125 psi @ 72° F	3319N12	000000


		3/4	IAPMO Listed	125 psi @ 72° F	3319N13	00000
		1	IAPMO Listed	125 psi @ 72° F	3319N14	00000
		1 1/2	IAPMO Listed	125 psi @ 72° F	3319N15	000000
		2	IAPMO Listed	125 psi @ 72° F	3319N16	000000

Tee Connectors

Tee Connector

304 Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

			304 Stainless Steel
	Pipe Size	Certification	Max. Pressure @ Temp.		Each
Press-Socket Female



		1/2	IAPMO Listed	125 psi @ 72° F	3319N34	0000000


		3/4	IAPMO Listed	125 psi @ 72° F	3319N35	000000
		1	IAPMO Listed	125 psi @ 72° F	3319N36	000000
		1 1/2	IAPMO Listed	125 psi @ 72° F	3319N37	000000
		2	IAPMO Listed	125 psi @ 72° F	3319N38	000000

Inline Tee Adapters

Tee Adapter

Inline tees are also known as branch tees.

304 Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

	Pipe Size				304 Stainless Steel
	(A)	(B)	(C)	Certification	Max. Pressure @ Temp.		Each
Press-Socket Female × NPT Female × Press-Socket Female



		3/4	3/4	3/4	IAPMO Listed	125 psi @ 72° F	3319N68	0000000

Inline Tee Reducing Adapters

Tee Reducing Adapter

Inline tees are also known as branch tees.

304 Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

	Pipe Size				304 Stainless Steel
	(A)	(B)	(C)	Certification	Max. Pressure @ Temp.		Each
Press-Socket Female × NPT Female × Press-Socket Female



		1	1/2	1	IAPMO Listed	125 psi @ 72° F	3319N69	0000000


		1	3/4	1	IAPMO Listed	125 psi @ 72° F	3319N71	000000

Inline Tee Reducers

Tee Reducer

Inline tees are also known as branch tees.

304 Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

	Pipe Size				304 Stainless Steel
	(A)	(B)	(C)	Certification	Max. Pressure @ Temp.		Each
Press-Socket Female × Press-Socket Female × Press-Socket Female



		1	1/2	1	IAPMO Listed	125 psi @ 72° F	3319N46	0000000


		1	3/4	1	IAPMO Listed	125 psi @ 72° F	3319N47	000000

Caps

Cap

304 Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

			304 Stainless Steel
	Pipe Size	Certification	Max. Pressure @ Temp.		Each
Press-Socket Female



		1/2	IAPMO Listed	125 psi @ 72° F	3319N193	000000


		3/4	IAPMO Listed	125 psi @ 72° F	3319N194	00000
		1	IAPMO Listed	125 psi @ 72° F	3319N195	00000
		1 1/2	IAPMO Listed	125 psi @ 72° F	3319N196	00000
		2	IAPMO Listed	125 psi @ 72° F	3319N197	000000

Crimping Tools

Image of Product. Front orientation. Tube Crimpers.

Crimping tools seal fittings in less than five seconds. These tools are cordless, so you can take them to any job. Connect the jaw or ring that matches your pipe size to these tools, then pull the trigger to crimp the fitting. The pivoting head lets you access connections from any angle.

	Battery
Voltage, V DC	No. Included	Cap., A·h	Battery Charger Included	Battery Charging Time, min.	Compatible With		Each
18	2	3	Yes	39	Viega MegaPress, Viega ProPress, Viega ProPress XL-C	2233N106	000000000

Jaw and Ring Sets


	Jaw and Ring Set

Jaw and ring sets include three jaws, three rings, and one ring actuator jaw. Jaws are for pipe sizes 1/2 to 1; they fit directly into the crimping tool. Rings are for pipe sizes 1 1/4 to 2; clip the ring around the fitting and use the ring actuator jaw and crimping tool to press the open ends together.

For Pipe
Size	Material	For Mfr.	For Mfr. Model No.	Compatible With	Includes	Container Type		Each
1/2, 3/4, 1, 1 1/4, 1 1/2, 2	Stainless Steel, Steel	Ridgid	RP 340	Viega MegaPress	One Ring Actuator Jaw, Three Jaws (1/2-1 Pipe Size), Three Rings (1 1/4-2 Pipe Size)	Carrying Case	2233N318	000000000