BUTTERFLY VALVE

N501N

NYLON 11 COATED DISC

Manually operated Lug butterfly valves.
• Pressure rating: 250 psi water (40°F to 80°F).
• Epoxy coated ductile iron lug body.
• ISO 5211 direct mounting pad/square stem.
• Food grade EPDM resilient seat -30°F to 250°F.
• API609 face to face flange.
• Floating dual shaft disc design.
• MSS SP 67 compliant.
• No pins in disc prevent potential leak points.
• NSF certified for drinking water service (EPDM seats only).
• Dead end service to 100 psi.
N501N: size 2” to 12”.
N501S: size 1 1/2” to 12”.
531S: VITON® SEATS - size 2” to 12”.
541N-541S: BUNA-N SEATS - size 2” to 12”.

Technical specifications

Position	Part name	Material	N.° pieces
1	BODY	DUCTILE IRON	1
2	SEAT	EPDM (30F TO 250F)	1
3	LOWER SHAFT	AISI 416	1
4	DISC 500N	IRON NYLON 11	1
5	UPPER SHAFT	AISI 416	1
6	LOCATING PIN	CARBON STEEL	1
7	BUSHING	PTFE	1
8	O-RING	EPDM	1
9	LEVER	EPOXY-COATED CARBON STEEL	1

SIZE	ISO 5211	⧄B	A	B	L	ØD	E	H	R	Ødo	ØK	Z-d	Øg	F	ØD1	N°-TH	Weight Lbs	Seat Torque 100 psi	Seat Torque 200 psi	Cv (GPM@ 1 psi) 50% OP	Cv (GPM@ 1 psi) 100% OP
1 1/2"	F05	9 mm	5.71	2.97	1.61	1.67	0.47	9.40	10.63	0.50	3.03	4-0.28	1.38	0.12	4.74	4-5/8"-11	7.9	111	133	35	108
2"	F05	9 mm	6.34	3.15	1.65	2.07	0.47	10.21	10.63	0.50	3.03	4-0.28	1.38	0.12	4.74	4-5/8"-11	8.4	126	146	49	146
2 1/2"	F05	9 mm	6.89	3.50	1.76	2.54	0.47	11.11	10.63	0.50	3.03	4-0.28	1.38	0.12	5.49	4-5/8"-11	9.3	134	167	84	284
3"	F05	9 mm	7.13	3.74	1.78	3.10	0.47	11.59	10.63	0.50	3.03	4-0.28	1.38	0.12	6.00	4-5/8"-11	10.4	205	223	128	547
4"	F07	11 mm	7.87	4.49	2.05	4.09	0.63	13.24	10.63	0.62	3.54	4-0.35	2.17	0.12	7.50	8-5/8"-11	19.8	339	386	195	844
5"	F07	14 mm	8.34	5.00	2.14	4.85	0.75	14.34	10.63	0.75	3.54	4-0.35	2.17	0.12	8.50	8-3/4"-10	24	523	602	320	1375
6"	F07	14 mm	8.90	5.47	2.20	6.13	0.75	15.37	10.63	0.75	3.54	4-0.35	2.17	0.12	9.50	8-3/4"-10	31.3	677	996	418	1882
8"	F10	17 mm	10.24	6.89	2.34	7.97	0.75	18.38	14.17	0.87	4.92	4-0.47	2.76	0.14	11.75	8-3/4"-10	40.1	1205	1864	745	3340
10" *	F10	22 mm	11.50	7.99	2.58	9.86	0.94	20.93	19.68	1.12	4.92	4-0.47	2.76	1.40	14.25	12-7/8"-9	59.1	1890	3140	1264	5475
12" *	F10	22 mm	13.27	9.53	3.03	11.87	0.94	24.24	19.68	1.24	5.51	4-0.47	2.76	1.40	17.00	12-7/8"-9	88.2	2808	4767	1905	8270

* 10" and 12" available in bare stem version only.

WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.

Certifications

NSF-ANSI

NSF

Available media and videos

PNEUMATIC AND ELECTRIC ACTUATED VALVE PACKAGES

CAT245100 USA RB-VP-VB

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