Butterfly Valve Series

• Cast Iron Butterfly Valves
• Ductile Iron Butterfly Valves
• Stainless Steel Butterfly Valves
• Triple Offset Butterfly Valves
• AWWA C504 Butterfly Valves
• Large Diameter Butterfly Valves
• Sanitary Butterfly Valves
• Flanged Butterfly Valves
• Lug Butterfly Valves
• Wafer Butterfly Valves
• High Vacuum Butterfly Valves

Product drawing»

Structural drawing»

Lug Butterfly Valve

product drawing

Usage and features

D341H-10C API lug butterfly valve is a new high performance product developed by engineering and technical personnel. Its performance has been at the advanced level, and is widely used in low pressure, medium pressure, high pressure, steel metallurgy, petroleum, chemical, electric power and other industrial pipes, to cut off or adjust the media flow.
D341H-10C API lug butterfly valve adopts three-dimensional eccentric oblique cone-shaped seat sealing. The disc sealing formed bu using a new type of metal and elastic material stack, embedded installed in the disc in line with the seat. The use of disc swing pressed sealing, so the sealing face friction is small, the closed off has a function of the more closed more tightly, so that it has a reliable sealing performance, open to ensure the sealing face disengage completely and the sealing face without any injury. The structural features of D341H-10C API lug butterfly valve exclude the shortcomings of other types butterfly valves of open more spaces can not be sealed, and it can be used under high temperature, overcomes other types of valves’ shortcomings of leaking easily due to thermal expansion used under high temperature.
The butterfly valve uses different sealing face materials according to the use of media requirements, in order to ensure sealing face wear resistance, erosion resistance, corrosion resistance, and a long service life.

Model and organization method

Dimensions & constructral diagram

Main technical parameters

nominal diameter	Dn（in）	2″-36″	2″-36″
nominal pressure	PN（MPa）	150Lb	300Lb
test pressure（MPa）	intensity test	3.0	7.5
	sealing test	2.2	5.5
applicable medium	water,steam,oil,acid and alkali,seawater,etc
suitable temperature	-40～425℃

The materials of main parts

part name	materials
body	WCB, CF8, CF8M
disc	WCB, CF8, CF8M
shaft lever	304, 316, 1Cr13
sealing ring	316,304
packing	flexible graphite,Fluoroplastics

The main connection dimensions of D341H-10C API

mo del	in ch 〞	L		L1		D		D1		D2		H2		H1		H		M	Z- d	WT/Kgs
		mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch			Wa fer type	Fla nge type
D 315 WF	2	1.72	43	4.25	108	6.00	152	4.75	120.5	3.62	92	4.33	110	11.02	280	13.58	345	M 18	4-19	9	20
	3	1.93	49	4.50	114	7.50	190	6.00	152.5	5.00	127	4.92	125	12.40	315	14.96	380	M 18	4-19	11	29
	4	2.20	56	5.00	127	9.00	229	7.50	190.5	6.19	157	5.70	145	13.78	350	16.34	415	M 20	8-19	13	33
	5	2.50	64	5.50	140	10.00	254	8.50	216	7.32	186	6.50	165	15.35	390	17.91	455	M 20	8-22	16	38
	6	2.75	70	5.50	140	11.00	279	9.50	241.5	8.50	216	6.89	175	17.91	455	21.45	545	M 20	8-22	26	74
	8	2.80	71	5.90	150	13.50	343	11.75	298.5	10.62	270	8.26	210	20.67	252	24.21	615	M 24	8-22	34	86
	10	3.00	76	6.30	160	16.00	406	14.25	362	12.75	324	9.84	250	23.81	605	27.36	695	M 24	12-25	51	142
	12	3.38	86	4.00	178	19.00	483	17.00	432	15.00	381	11.24	285	28.74	730	32.78	830	M 27	12-25	72	167
	14	3.63	92	4.20	190	21.00	533	18.75	476	16.25	413	12.60	320	31.50	800	35.43	900	M 27	12-29	106	218
	16	4.00	102	8.5	216	23.50	597	21.25	540	18.50	470	13.98	355	34.25	840	38.58	980	M 30	16-29	133	275
	18	4.50	114	8.74	222	25.00	635	22.75	578	21.00	533	14.96	380	36.22	920	40.55	1030	M 30	16-32	176	315
	20	5.00	127	9.00	229	27.50	399	25.00	635	23.00	584	16.34	415	39.37	1000	43.70	1110	M 33	20-32	190	395
	24	6.06	154	10.50	267	32.00	813	29.50	749.5	27.25	692	18.70	475	45.51	1155	51.37	1305	M 33	20-35	394	580
	30	6.50	165	11.50	292	38.75	985	36.00	914	33.75	857	22.38	580	54.13	1375	60.03	1525	M 39	28-35	476	717
	32	7.50	190	12.50	318	41.75	1060	38.50	978	36.00	814	24.80	630	56.50	1435	62.40	1585	M 39	28-41	618	880
	36	8.00	203	13.00	330	46.00	1168	42.75	1085	40.25	1022	26.77	680	62.40	1585	69.48	1765	M 20	32-41	762	1042
D 330 WF	6	2.75	70					9.50	240	3.50	216	6.89	175	17.91	435	21.45	545	M 20	8-22	28
	8	2.80	71					11.75	298	10.62	270	8.26	210	20.67	525	24.21	615	M 24	8-22	36
	10	3.00	76					14.25	362	12.75	324	9.84	250	23.81	605	27.36	695	M 24	12-25	53
	12	3.38	86					17.00	432	15.00	381	11.24	285	28.74	730	32.78	830	M 27	12-25	74
	14	3.63	92					18.25	476	16.25	413	12.64	320	31.50	800	35.43	900	M 27	12-29	110
	16	4.00	102					21.25	540	18.50	470	13.98	355	31.25	870	35.58	980	M 30	16-29	138
	18	4.50	114					22.75	578	21.00	533	14.96	380	36.22	920	40.55	1030	M 30	16-32	180
	20	5.00	127					25.00	635	23.00	584	16.34	415	39.37	1000	43.70	1110	M 33	20-32	196
	24	6.06	154					29.50	749	27.25	692	18.70	475	45.51	1156	51.37	1305	M 33	20-35	400
	30	6.50	165					36.00	914	33.75	857	22.38	580	54.13	1375	60.03	1525	M 39	28-35	482
	36	8.00	203					42.75	1085	40.25	1022	26.77	680	62.40	1585	69.48	1765	M 18	32-42	468
D 315 L	2	1.72	43	4.25	108	6.50	165	5.00	127	3.62	92	4.33	110	11.02	280	13.58	345	M 20	8-19	9	20
	3	2.50	64	4.50	114	8.26	210	6.63	168	5.08	127	4.92	125	12.40	315	14.96	380	M 20	8-22	12	29
	4	2.50	64	5.00	127	10.00	254	7.87	200	6.18	157	5.70	145	13.78	350	16.34	415	M 20	8-22	15	35
	5	2.75	70	5.50	140	11.00	279	9.25	235	7.32	186	6.30	165	15.35	3920	17.91	455	M 20	8-22	18	40
	6	3.00	76	8.30	210	12.50	318	10.63	270	8.50	216	6.89	175	17.91	455	21.45	545	M 24	12-22	28	81
	8	3.50	89	9.05	230	15.00	381	13.00	330	10.62	270	8.26	210	20.37	525	24.21	615	M 27	12-26	37	94
	10	4.50	114	9.84	250	17.50	445	15.24	387	12.75	324	9.84	256	23.81	605	27.36	695	M 30	16-29	56	156
	12	4.50	114	10.62	270	20.50	521	17.76	451	15.00	381	11.24	285	28.74	730	32.78	830	M 30	16-32	79	183
	14	5.00	127	10.62	270	23.00	584	20.24	514	16.26	413	12.60	320	31.50	800	35.43	900	M 33	20-32	116	239
	16	5.50	140	12.20	310	25.50	648	12.50	571	18.50	470	13.98	355	34.25	870	38.58	980	M 33	20-35	146	302
	18	5.98	152	13.00	330	28.00	711	24.72	628	21.00	533	14.96	380	36.22	920	40.55	1030	M 33	24-35	193	346
	20	5.98	152	13.80	350	30.50	775	27.00	686	23.00	584	16.34	415	39.37	1000	43.70	1110	M 33	24-35	209	434
	24	7.00	178	15.35	390	36.00	914	32.00	813	27.24	692	18.70	475	45.51	1156	51.37	1305	M 39	24-41	433	638
	30	9.01	229	17.71	450	43.00	1092	39.25	997	27.69	703	22.38	580	54.13	1375	60.03	1525	M 45	28-49	523	788
	36	9.88	241	20.07	510	50.00	1270	46.00	1168	34.88	886	26.77	680	62.40	1858	69.48	1765	M 50	32-53	838	1146
D 330 L	6	3.00	76					10.63	270	8.50	216	6.89	175	17.01	455	21.45	545	M 20	12-22	29
	8	6.50	89					13.00	330	10.62	270	8.26	210	20.67	525	24.21	615	M 24	12-36	38
	10	4.50	114					15.24	387	12.75	324	9.84	250	23.81	605	28.36	695	M 27	16-29	58
	12	4.50	114					17.76	451	15.00	381	11.24	285	28.74	730	32.78	830	M 30	16-32	81
	14	5.00	127					20.24	514	16.26	413	12.60	320	31.50	800	35.43	900	M 30	20-32	119
	16	5.50	140					22.30	591	18.50	470	13.98	355	34.25	870	38.58	980	M 33	24-35	149
	18	5.98	152					24.72	628	21.00	533	14.96	380	36.22	920	40.55	1030	M 33	24-35	198
	20	5.98	152					27.00	686	23.00	584	16.34	415	39.37	1000	43.70	1110	M 33	24-35	215
	24	7.00	178					32.00	813	27.24	692	18.70	475	45.51	1156	51.37	1305	M 39	24-41	436
	30	9.01	229					39.25	991	27.69	703	22.38	580	54.13	1375	60.06	1525	M 45	28-49	528
	36	9.88	241					46.00	1168	34.88	886	26.77	680	62.40	1585	69.48	1765	M 50	32-52	843

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