Pipe Blanks | McMaster-Carr

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47 Products

Pipeline Fluid Blockers

Also known as pipe blinds, these fluid blockers fit between two flanges to stop flow, so you can work downstream without draining the system.

Paddle Blinds

Paddle blinds slip between the flanges to temporarily block flow.

304 Stainless Steel and PTFE-Coated 304 Stainless Steel—304 stainless steel blinds resist corrosion better than steel blinds.

						Handle
	For Pipe Size	OD	For Orifice Flange ANSI Class	Max. Pressure @ Temp.	Thk.	Lg.	Wd.	Temp. Range, ° F	Specs. Met	Food Industry Std.		Each
Steel


		1/2	1 3/4"	150	150 psi @ 70° F	1/4"	7"	1"	-20 to 100	ASTM A36	—	4730K11	000000
		3/4	2 1/8"	150	150 psi @ 70° F	1/4"	7"	1"	-20 to 100	ASTM A36	—	4730K12	00000
		1	2 1/2"	—	150 psi @ 70° F	1/4"	7"	1"	-20 to 100	ASTM A36	—	4730K22	00000
		1 1/4	2 7/8"	150	150 psi @ 70° F	1/4"	7"	1"	-20 to 100	ASTM A36	—	4730K13	00000
		1 1/2	3 1/4"	—	150 psi @ 70° F	1/4"	7"	1"	-20 to 100	ASTM A36	—	4730K24	00000
		2	4"	—	150 psi @ 70° F	1/4"	7"	1"	-20 to 100	ASTM A36	—	4730K25	00000
		2 1/2	4 3/4"	—	150 psi @ 70° F	1/4"	7"	1"	-20 to 100	ASTM A36	—	4730K26	00000
		3	5 1/4"	—	150 psi @ 70° F	1/4"	7"	1"	-20 to 100	ASTM A36	—	4730K27	00000
		3 1/2	6 1/4"	150	150 psi @ 70° F	3/8"	7"	1"	-20 to 100	ASTM A36	—	4730K14	000000
		4	6 3/4"	—	150 psi @ 70° F	1/4"	7"	1"	-20 to 100	ASTM A36	—	4730K28	00000
		6	8 5/8"	—	150 psi @ 70° F	1/2"	7"	1"	-20 to 100	ASTM A36	—	4730K29	000000
		8	10 7/8"	—	150 psi @ 70° F	5/8"	7"	1"	-20 to 100	ASTM A36	—	4730K52	000000
		10	13 1/4"	—	150 psi @ 70° F	5/8"	7"	1 1/2"	-20 to 100	ASTM A36	—	4730K53	000000
		12	16"	—	150 psi @ 70° F	3/4"	7"	1 1/2"	-20 to 100	ASTM A36	—	4730K54	000000

		304 Stainless Steel


				8	11"	150	150 psi @ 70° F	1/4"	7"	1"	-100 to 400	—	—	4739K11	000000
				10	13 3/8"	150	150 psi @ 70° F	3/8"	7"	1 1/2"	-100 to 400	—	—	4739K12	000000
				12	16 1/8"	150	150 psi @ 70° F	3/8"	7"	1 1/2"	-100 to 400	—	—	4739K13	000000

				PTFE-Coated 304 Stainless Steel


						1/2	1 7/8"	150	150 psi @ 250° F	1/8"	2"	3/4"	-100 to 400	ASTM D4894	FDA Compliant 21 CFR 177.1550	4739K28	00000
						3/4	2 1/4"	150	150 psi @ 250° F	1/8"	2"	3/4"	-100 to 400	ASTM D4894	FDA Compliant 21 CFR 177.1550	4739K29	00000
						1	2 5/8"	150	150 psi @ 70° F	1/8"	2 3/4"	3/4"	-100 to 400	ASTM D4894	FDA Compliant 21 CFR 177.1550	4739K21	00000
						1 1/2	3 3/8"	150	150 psi @ 70° F	1/8"	2 3/4"	3/4"	-100 to 400	ASTM D4894	FDA Compliant 21 CFR 177.1550	4739K22	00000
						2	4 1/8"	150	150 psi @ 70° F	1/8"	3"	3/4"	-100 to 400	ASTM D4894	FDA Compliant 21 CFR 177.1550	4739K23	00000
						3	5 3/8"	150	150 psi @ 70° F	1/8"	3"	3/4"	-100 to 400	ASTM D4894	FDA Compliant 21 CFR 177.1550	4739K24	00000
						4	6 7/8"	150	150 psi @ 70° F	1/8"	3"	3/4"	-100 to 400	ASTM D4894	FDA Compliant 21 CFR 177.1550	4739K25	000000
						6	8 3/4"	150	150 psi @ 70° F	3/16"	5"	3/4"	-100 to 400	ASTM D4894	FDA Compliant 21 CFR 177.1550	4739K26	000000

Spectacle Blinds

Spectacle blinds install permanently and rotate around the bolt to either block or open flow. However, they add extra weight to your pipeline.

304 Stainless Steel—304 stainless steel blinds resist corrosion better than steel blinds.

	ID	OD	For Orifice Flange ANSI Class	Max. Pressure @ Temp.	Thk.	End-to-End Lg.	Temp. Range, ° F	Specs. Met		Each
Steel


	1/2	5/8"	1 3/4"	150	285 psi @ 70° F	1/4"	4 1/8"	-20 to 800	ASTM A516	4730K31	000000
	3/4	7/8"	2 1/8"	150	285 psi @ 70° F	1/4"	4 7/8"	-20 to 800	ASTM A516	4730K32	000000
	1	1"	2 1/2"	150	285 psi @ 70° F	1/4"	5 5/8"	-20 to 800	ASTM A516	4730K33	000000
	1 1/2	1 7/8"	3 1/4"	150	285 psi @ 70° F	3/8"	7 1/8"	-20 to 800	ASTM A516	4730K34	000000
	2	2 3/8"	4"	150	285 psi @ 70° F	3/8"	8 3/4"	-20 to 800	ASTM A516	4730K35	000000
	2 1/2	2 7/8"	4 3/4"	150	285 psi @ 70° F	3/8"	10 1/4"	-20 to 800	ASTM A516	4730K36	000000
	3	3 1/2"	5 1/4"	150	285 psi @ 70° F	3/8"	11 1/4"	-20 to 800	ASTM A516	4730K37	000000
	4	4 1/2"	6 3/4"	150	285 psi @ 70° F	1/2"	14 1/4"	-20 to 800	ASTM A516	4730K38	000000
	6	6 5/8"	8 5/8"	150	285 psi @ 70° F	5/8"	18 1/8"	-20 to 800	ASTM A516	4730K39	000000
	8	8 5/8"	10 7/8"	150	285 psi @ 70° F	5/8"	22 5/8"	-20 to 800	ASTM A516	4730K41	000000
	10	10 3/4"	13 1/4"	150	285 psi @ 70° F	3/4"	27 1/2"	-20 to 800	ASTM A105	4730K42	000000

	304 Stainless Steel


			1/2	5/8"	1 3/4"	150	230 psi @ 70° F	1/4"	4 1/8"	-20 to 800	ASTM A240	4739K31	000000
			3/4	7/8"	2 1/8"	150	230 psi @ 70° F	1/4"	4 7/8"	-20 to 800	ASTM A240	4739K32	000000
			1	1"	2 1/2"	150	230 psi @ 70° F	1/4"	5 5/8"	-20 to 800	ASTM A240	4739K33	000000
			1 1/2	1 7/8"	3 1/4"	150	230 psi @ 70° F	3/8"	7 1/8"	-20 to 800	ASTM A240	4739K34	000000
			2	2 3/8"	4"	150	230 psi @ 70° F	3/8"	8 3/4"	-20 to 800	ASTM A240	4739K35	000000
			2 1/2	2 7/8"	4 3/4"	150	230 psi @ 70° F	3/8"	10 1/4"	-20 to 800	ASTM A240	4739K36	000000
			3	3 1/2"	5 1/4"	150	230 psi @ 70° F	3/8"	11 1/4"	-20 to 800	ASTM A240	4739K37	000000
			4	4 1/2"	6 3/4"	150	230 psi @ 70° F	1/2"	14 1/4"	-20 to 800	ASTM A240	4739K38	000000
			6	6 5/8"	8 5/8"	150	230 psi @ 70° F	5/8"	18 1/8"	-20 to 800	ASTM A240	4739K39	000000
			8	8 5/8"	10 7/8"	150	230 psi @ 70° F	5/8"	22 5/8"	-20 to 800	ASTM A240	4739K41	000000
			10	10 3/4"	13 1/4"	150	230 psi @ 70° F	3/4"	27 1/2"	-20 to 800	ASTM A182	4739K42	00000000