Flanges for Hydrochloric Acid

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Flanged Connection Surface

For Use With

Grooved-End Pipe Fittings

Low Stress-to-Seal Flanges

Acetic Acid (White Vinegar) (5% Concentration)

Acetic Acid (White Vinegar) (10% Concentration)

Acetic Acid (White Vinegar) (75% Concentration)

Hydrochloric Acid (10% Concentration)

Hydrochloric Acid (25% Concentration)

Hydrochloric Acid (37% Concentration)

Nitric Acid (10% Concentration)

Phosphoric Acid (85% Concentration)

Plastic Pellet

Resin

Sodium Carbonate (Soda Ash) (20% Concentration in Water)

Sodium Hydroxide (Caustic Soda)

Sodium Hydroxide (Caustic Soda) (50% Concentration)

Steam

Sulfuric Acid (30% Concentration)

Sulfuric Acid (70% Concentration)

Sulfuric Acid (75% Concentration)

Sulfuric Acid (80% Concentration)

Flange OD

Fitting Material

Number of Bolt Holes

Shape

Gender

Connects To

Pipe Schedule

Length

Color

Maximum Pressure @ Temperature

Flange Material

Maximum Temperature

DFARS Specialty Metals

Exempt

REACH

Compliant

Not Compliant

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

Yes

Export Control Classification Number (ECCN)

RoHS

58 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.

Selecting and Measuring Expansion Joints

For information about selecting pipe size, see Selecting and Measuring Pipe & Fittings.

Front

Flat Surface on Back

For Use With: Deionized Water, Drinking Water, Hydrochloric Acid, Phosphoric Acid, Salt Water, Solvents
Pressure Class: 150
Temperature Range: 32° to 200° F
Specifications Met: ASTM D2837, ASTM D4101, FDA Compliant 21 CFR 177.1520, FDA Compliant 21 CFR 178.3297, ISO 7279, NSF/ANSI 61
Pipe Nipples and Pipe: Use SDR 11 Polypropylene Plastic
Fittings: Use Polypropylene Plastic

The inside of these flanges won’t leach contaminants into your line or accumulate particles—they’re polished to an ultra-smooth 12 Ra finish, which also makes them easy to clean. Made of polypropylene, they resist organic solvents, acids, and alkalis better than CPVC pipe flanges. Bolt two same-size flanges together with a gasket (not included) to create an access point in your line. These flanges meet NSF/ANSI 61 for use with drinking water, and they’re FDA compliant for direct contact with food. They also meet ASTM requirements for material and performance, and ISO requirements for dimensions.

Also known as lap-joint flanges, they connect to pipe with stub-end straight adapters (not included). Slide the stub end adapter into your flange and weld to your pipe with socket fusion. Since the flange isn’t welded to the pipe, it can be disconnected easily for cleaning and inspecting.

Flanges
			Bolt Hole								Adapters
Pipe Size	Flange OD	For Bolt Dia.	Dia.	No. of	Bolt Circle Dia.	Material	Color	Max. Pressure		Each		Each
Fixed Flanges, Stub End × Flanged
1/2	3 5/8"	1/2"	5/8"	4	2 3/8"	Polypropylene Plastic	Light Gray	150 psi @ 72° F	5352N11	000000	5381N085	000000
3/4	4 1/8"	1/2"	5/8"	4	2 3/4"	Polypropylene Plastic	Light Gray	150 psi @ 72° F	5352N12	00000	5381N086	00000
1	4 3/8"	1/2"	5/8"	4	3 1/8"	Polypropylene Plastic	Light Gray	150 psi @ 72° F	5352N13	00000	5381N087	00000
1 1/2	5 1/4"	1/2"	5/8"	4	3 7/8"	Polypropylene Plastic	Light Gray	150 psi @ 72° F	5352N14	00000	5381N088	00000
2	6 1/4"	5/8"	3/4"	4	4 3/4"	Polypropylene Plastic	Light Gray	150 psi @ 72° F	5352N15	000000	5381N089	00000

High-Purity Polypropylene Pipe Fittings for Corrosive Chemicals

The inside of these fittings won’t leach contaminants into your line or accumulate particles—they’re polished to an ultra-smooth 12 Ra finish, which also makes them easy to clean. Made of polypropylene, they resist organic solvents, acids, and alkalis better than CPVC fittings. These fittings meet NSF/ANSI 61 for use with drinking water, and they’re FDA compliant for direct contact with food. They also meet ASTM requirements for material and performance, and ISO requirements for dimensions.

Connect them to pipe with socket fusion welding for a strong, permanent bond. Use a socket fusion tool with a heater bushing (sold separately) that matches your pipe size.

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

Stub-End Straight Adapters, Female Socket Fusion Connect × Flanged

Straight Adapter with Flange

Straight Adapter

For Use With: Deionized Water, Drinking Water, Hydrochloric Acid, Phosphoric Acid, Salt Water, Solvents
Temperature Range: 32° to 200° F
Specifications Met: ASTM D2837, ASTM D4101, FDA Compliant 21 CFR 177.1520, FDA Compliant 21 CFR 178.3297, ISO 7279, NSF/ANSI 61
Pipe Nipples and Pipe: Use SDR 11 Polypropylene Plastic
Flanges: Use Polypropylene Plastic

Stub-end straight adapters connect flanges to pipe. Slide the straight end into a flange and fuse the stub end to the pipe. Since the flange isn’t fused to the pipe, it can be disconnected easily for cleaning and inspecting.

Adapters							Flanges
Pipe Size	Wall Thick.	Material	Color	Max. Pressure		Each		Each
1/2	0.119"	Polypropylene Plastic	Light Gray	150 psi @ 72° F	5381N085	000000	5352N11	000000
3/4	0.138"	Polypropylene Plastic	Light Gray	150 psi @ 72° F	5381N086	00000	5352N12	00000
1	0.138"	Polypropylene Plastic	Light Gray	150 psi @ 72° F	5381N087	00000	5352N13	00000
1 1/2	0.195"	Polypropylene Plastic	Light Gray	150 psi @ 72° F	5381N088	00000	5352N14	00000
2	0.178"	Polypropylene Plastic	Light Gray	150 psi @ 72° F	5381N089	00000	5352N15	000000

Straight Ball Valves with Lockable Lever Handle, Female Socket Fusion Connect

For Use With: Deionized Water, Drinking Water, Hydrochloric Acid, Phosphoric Acid, Salt Water, Solvents
Temperature Range: 32° to 200° F
Specifications Met: ASTM D2837, ASTM D4101, FDA Compliant 21 CFR 177.1520, FDA Compliant 21 CFR 178.3297, ISO 7279, NSF/ANSI 61
Seal Material: See table
Seat Material: PTFE Plastic

Add a ball valve to control the flow in your line.

EPDM Rubber Seal
Pipe Size	Flow Coefficient (Cv)	Vacuum Rating, in. of Hg	Port Type	End-to-End Lg.	Color	Max. Pressure		Each
Polypropylene Plastic
1/2	12.5	29.92	Full	3 13/16"	Light Gray	150 psi @ 0° F	5381N074	0000000
3/4	28	29.92	Full	4 9/32"	Light Gray	150 psi @ 0° F	5381N075	000000
1	50.9	29.92	Full	4 23/32"	Light Gray	150 psi @ 0° F	5381N076	000000
1 1/2	150	29.92	Full	6 1/16"	Light Gray	150 psi @ 0° F	5381N077	000000
2	230	29.92	Full	6 13/16"	Light Gray	150 psi @ 0° F	5381N078	000000
Viton® Fluoroelastomer Rubber Seal
Polypropylene Plastic
1/2	12.5	29.92	Full	3 13/16"	Light Gray	150 psi @ 0° F	5381N079	000000
3/4	28	29.92	Full	4 9/32"	Light Gray	150 psi @ 0° F	5381N081	000000
1	50.9	29.92	Full	4 23/32"	Light Gray	150 psi @ 0° F	5381N082	000000
1 1/2	150	29.92	Full	6 1/16"	Light Gray	150 psi @ 0° F	5381N083	000000
2	230	29.92	Full	6 13/16"	Light Gray	150 psi @ 0° F	5381N084	000000

Socket Fusion Weld Tools

		Each
	5381N067	0000000

Heater Bushings

For Pipe Size		Each
1/2	5381N068	0000000
3/4	5381N069	000000
1	5381N071	000000
1 1/2	5381N072	000000
2	5381N073	000000

Easy-Access CPVC Pipe Flanges for Chemicals

For Use With: Acetic Acid (10%), Calcium Chloride, Deionized Water, Hydrochloric Acid, Phosphoric Acid, Salt Water, Sodium Hydroxide, Sulfuric Acid (80%), Water
Temperature Range: 32° to 200° F
Specifications Met: ASTM D1784
Pipe Nipples and Pipe: Use Schedule 80 CPVC Plastic

The grooved ends on these flanges connect to pipe with a clamp, so you can access your chemical process line for routine maintenance. They are also known as Victaulic flanges. Bolt two same-size flanges together with a gasket (sold separately). Flanges are CPVC, which has excellent chemical resistance to withstand a variety of salt solutions, acids, and other harsh substances. They are comparable to Corzan. Flanges meet ASTM D1784 specifications and testing requirements for material quality.

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

Fixed Flanges, Male Grooved End × Flanged

Front

Raised Surface on Back

Pipe Size	Flange OD	For Bolt Dia.	Bolt Hole Dia.	Number of Bolt Holes	Bolt Circle Dia.	Material	Color	Max. Pressure		Each
2	6"	5/8"	3/4"	4	4 3/4"	CPVC Plastic	Light Gray	150 psi @ 72° F	2663N21	0000000
3	7 1/2"	5/8"	3/4"	4	6"	CPVC Plastic	Light Gray	150 psi @ 72° F	2663N22	000000
4	9"	5/8"	3/4"	8	7 1/2"	CPVC Plastic	Light Gray	150 psi @ 72° F	2663N23	000000

Clamp Connectors

Clamp connectors let you connect CPVC grooved-end pipe fittings and pipe.

For Pipe Size	For Pipe OD	Material	Color	Gasket Material	Max. Pressure	Specifications Met		Each
2	2 3/8"	Enamel-Coated Iron	Orange	EPDM Rubber	300 psi @ 72° F	ASTM D1784, ASTM F441	2663N27	000000
3	3 1/2"	Enamel-Coated Iron	Orange	EPDM Rubber	300 psi @ 72° F	ASTM D1784, ASTM F441	2663N28	00000
4	4 1/2"	Enamel-Coated Iron	Orange	EPDM Rubber	300 psi @ 72° F	ASTM D1784, ASTM F441	2663N29	000000

Clamp Adapters

Clamp adapters let you connect CPVC grooved-end pipe fittings and pipe to metal grooved-end pipe fittings and pipe.

For Pipe Size	For Pipe OD	Material	Color	Gasket Material	Max. Pressure	Specifications Met		Each
3	3 1/2"	Enamel-Coated Iron	Orange	EPDM Rubber	300 psi @ 72° F	ASTM D1784, ASTM F441	2663N31	000000
4	4 1/2"	Enamel-Coated Iron	Orange	EPDM Rubber	300 psi @ 72° F	ASTM D1784, ASTM F441	2663N32	000000

Clamp Reducers

Clamp reducers allow you to connect CPVC grooved-end pipe fittings and pipe and transition from a larger pipe size to a smaller pipe size.

For Pipe Size	For Pipe OD	Material	Color	Gasket Material	Max. Pressure	Specifications Met		Each
3 × 2	3 1/2" × 2 3/8"	Enamel-Coated Iron	Orange	EPDM Rubber	300 psi @ 72° F	ASTM D1784, ASTM F441	2663N33	000000
4 × 2	4 1/2" × 2 3/8"	Enamel-Coated Iron	Orange	EPDM Rubber	300 psi @ 72° F	ASTM D1784, ASTM F441	2663N35	000000
4 × 3	4 1/2" × 3 1/2"	Enamel-Coated Iron	Orange	EPDM Rubber	300 psi @ 72° F	ASTM D1784, ASTM F441	2663N34	000000

High-Temperature PTFE Pipe Flanges for Chemicals

Flat Surface on Back

Front

For Use With: Deionized Water, Hydrochloric Acid, Solvents
Temperature Range: -450° to 550° F
Specifications Met: ASTM D1710
Pipe Nipples and Pipe: Use Schedule 80 PTFE Plastic
Fittings: Use Schedule 80 PTFE Plastic

Made of PTFE, these flanges can handle a wider temperature range than any of our other plastic pipe flanges for chemicals. They have the chemical resistance to stand up to acid and solvents. Also known as Pressure Class 150 flanges, they have thick, strong walls for heavy duty industrial applications. The material won’t leach contaminates into the line, so these flanges are commonly used in high-purity processes, such as semiconductor and clean room applications. Bolt two same-size flanges together with a gasket (sold separately) to create an access point within a line. When connecting to pipe, apply a non-hardening, plastic-compatible sealant to the male threads to prevent leaks. Tape or sealants with PTFE are not recommended for plastic-to-plastic threaded connections. When making a threaded connection be careful not to overtighten the threads. To prevent cracks and leaks, finger tighten the flange, then wrench-tighten one to two turns. Flanges meet ASTM D1710 specifications and testing requirements for material quality.

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

Sealants cannot be sold to Colorado, Connecticut, District of Columbia, Delaware, Illinois, Indiana, Massachusetts, Maryland, Maine, Michigan, New Hampshire, New Jersey, Northern Virginia, New York, Ohio, Pennsylvania, Rhode Island, or Utah due to local VOC (Volatile Organic Compounds) regulations.

Fixed Flanges, Female Threaded × Flanged
Pipe Size	Flange OD	For Bolt Dia.	Bolt Hole Dia.	Number of Bolt Holes	Bolt Circle Dia.	Material	Color	Max. Pressure		Each
NPT Threads
1/2	3 1/2"	1/2"	5/8"	4	2 3/8"	PTFE Plastic	White	60 psi @ 72° F	45375K811	0000000
3/4	3 7/8"	1/2"	5/8"	4	2 3/4"	PTFE Plastic	White	50 psi @ 72° F	45375K812	000000
1	4 1/4"	1/2"	5/8"	4	3 1/8"	PTFE Plastic	White	35 psi @ 72° F	45375K813	000000

Non-Hardening Thread Sealant (8-oz. Brush-Top Can)

4586K9

Each

000000

High-Purity PVDF Pipe Fittings for Corrosive Chemicals

Made of PVDF that’s finished to a 12 Ra smoothness, these fittings handle some of the harshest chemicals without leaching contaminants into your line. They won’t accumulate particles and are easy to clean, thanks to their smoothness. Comparable to Kynar, these fittings handle most organic solvents that would dissolve CPVC, and chlorine or nitric acid that would weaken polypropylene. You can use them at higher temperatures than CPVC and polypropylene. These fittings meet UL 94 V-0 and FM standards for flame retardance. They’re also FDA compliant for direct contact with food, and they meet ASTM requirements for dimensions and tolerances.

Connect them to pipe with socket fusion welding for a strong, permanent bond. Use a socket fusion tool with a heater bushing (sold separately) that matches your pipe size.

Stub-End Straight Adapters, Female Socket Fusion Connect × Flanged

Straight
Adapter
with Flange

Straight Adapter

For Use With: Chlorine, Deionized Water, Hydrochloric Acid, Nitric Acid, Oil, Phosphoric Acid, Salt Water, Solvents
Temperature Range: -40° to 270° F
Specifications Met: ASTM D3261, FDA Compliant 21 CFR 177.2510, FM 4910, UL 94 V-0
Pipe Nipples and Pipe: Use SDR 21 PVDF Plastic
Flanges: Use Polypropylene Plastic

Adapters							Flanges
Pipe Size	Wall Thick.	Material	Color	Max. Pressure		Each		Each
1/2	0.138"	PVDF Plastic	White	230 psi @ 72° F	5306N27	000000	5352N11	000000
3/4	0.158"	PVDF Plastic	White	230 psi @ 72° F	5306N28	000000	5352N12	00000
1	0.177"	PVDF Plastic	White	230 psi @ 72° F	5306N29	000000	5352N13	00000
1 1/2	0.217"	PVDF Plastic	White	230 psi @ 72° F	5306N31	000000	5352N14	00000
2	0.256"	PVDF Plastic	White	230 psi @ 72° F	5306N32	000000	5352N15	000000

Straight Ball Valves with Lockable Lever Handle, Female Socket Fusion Connect

For Use With: Chlorine, Deionized Water, Hydrochloric Acid, Nitric Acid, Oil, Phosphoric Acid, Salt Water, Solvents
Temperature Range: -40° to 270° F
Specifications Met: ASTM D3222, FDA Compliant 21 CFR 177.2510, FM 4910, UL 94 V-0
Seal Material: Viton® Fluoroelastomer Rubber
Seat Material: PTFE Plastic

Add a ball valve to control the flow in your line.

PVDF Plastic
Pipe Size	Flow Coefficient (Cv)	Vacuum Rating, in. of Hg	Port Type	End-to-End Lg.	Color	Max. Pressure		Each
1/2	12.5	29.92	Full	3 13/16"	White	230 psi @ 72° F	5306N67	0000000
3/4	28	29.92	Full	4 9/32"	White	230 psi @ 72° F	5306N68	000000
1	50.9	29.92	Full	4 23/32"	White	230 psi @ 72° F	5306N69	000000
1 1/2	150	29.92	Full	6 1/16"	White	230 psi @ 72° F	5306N71	00000000
2	230	29.92	Full	6 13/16"	White	230 psi @ 72° F	5306N72	00000000

Socket Fusion Weld Tools

		Each
	5381N067	0000000

Heater Bushings

For Pipe Size		Each
1/2	5381N068	0000000
3/4	5381N069	000000
1	5381N071	000000
1 1/2	5381N072	000000
2	5381N073	000000

Chemical-Resistant Expansion Joints with Flanged Ends

For Use With: Coolant, Hydrochloric Acid, Water
Temperature Range: -0° to 400° F
Maximum Pressure: See table
Maximum Vacuum: 29 in. of Hg @ 72° F

The PTFE body on these expansion joints has a super-smooth surface that stands up to corrosive chemicals. Joints have a triple-bulb design that provides excellent vibration absorption, reducing stress on your piping system. The flanges mate with a same-size flat-surface Class 150 flange without the need for a gasket. Limit rods are attached to the flanges to prevent overextension.

				Distance						Threaded Bolt Holes
Flange OD	Pipe Size	Lg.	No. of Bolt Holes	Compression	Expansion	Offset	Max. Pressure	Expansion Joint Type	Flange Material	Bolt Hole Thread Size		Each
Ultra-Corrosion-Resistant Coated PTFE Plastic
5"	1 1/2	2"	4	1/2"	1/2"	1/4"	130 psi @ 72° F	Triple Bulb	Iron	1/2"-13	3501K81	0000000
6"	2	2 3/4"	4	3/4"	3/4"	3/8"	130 psi @ 72° F	Triple Bulb	Iron	5/8"-11	3501K82	000000
7"	2 1/2	3 3/16"	4	3/4"	3/4"	3/8"	130 psi @ 72° F	Triple Bulb	Iron	5/8"-11	3501K83	00000000
7 1/2"	3	3 5/8"	4	1"	1"	1/2"	130 psi @ 72° F	Triple Bulb	Iron	5/8"-11	3501K84	00000000
9"	4	3 5/8"	8	1"	1"	1/2"	130 psi @ 72° F	Triple Bulb	Iron	5/8"-11	3501K85	00000000
11"	6	4"	8	1 1/8"	1 1/8"	9/16"	130 psi @ 72° F	Triple Bulb	Iron	3/4"-10	3501K87	00000000
13 1/2"	8	6"	8	1 1/8"	1 1/8"	9/16"	120 psi @ 72° F	Triple Bulb	Iron	3/4"-10	3501K58	00000000

Selecting and Measuring Expansion Joints

High-Purity Polypropylene Pipe Flanges for Corrosive Chemicals

High-Purity Polypropylene Pipe Fittings for Corrosive Chemicals

Easy-Access CPVC Pipe Flanges for Chemicals

High-Temperature PTFE Pipe Flanges for Chemicals

High-Purity PVDF Pipe Fittings for Corrosive Chemicals

Chemical-Resistant Expansion Joints with Flanged Ends