Seawater resistant butterfly valve-Zhejiang Zhedong Valve Co., Ltd.-Official website

Product details

Structural features

1. Optimized design of butterfly plate can effectively increase the flow area of butterfly valve and reduce fluid resistance;
2. Appropriate butterfly plate sealing ring can be selected according to different working conditions to ensure that the valve will not produce internal leakage within a maintenance cycle;
3. The valve body, butterfly plate, pressure ring and other parts are made of carbon steel material, effectively reducing the manufacturing cost. All parts in contact with the medium are sprayed with ceramic and other wear resistant and corrosion resistant coating, which can increase the resistance to seawater corrosion and erosion of the valve;
4. The valve axle sleeve is made of duplex stainless steel material, and interference fit is adopted with the axle hole on the valve body, effectively preventing the corrosion of seawater on the axle hole of the valve body;
5. It has a retaining ring between the stem and the shaft sleeve for the purpose of preventing seawater from penetrating into the stem and the shaft sleeve and eliminating the corrosion of the stem and shaft sleeve caused by seawater.
At the same time, it can prevent sand and mud from seeping into the gap between the valve stem and the shaft sleeve, causing the phenomenon of the valve stem and the shaft sleeve to bite, effectively increasing the service life of the valve;
6. Double-phase stainless steel surfacing on the sealing surface of the valve seat can be wear-resistant and anti-scouring, effectively improving the reliability of valve sealing;
7. Adopt live load combined packing, that is, V-TYPE PTFE+ V-type EPDM packing, to ensure that the valve does not produce leakage within one maintenance cycle.

Executive Standards

Design and manufacturing: JB/T8527, GB/T1224, API609, ASME B16.34, etc
Connection flange: GB/T91113.1~9113.4, ASME B16.5, ASME B16.74 and other standards
Structure length: GB/T1221, API609, ISO5752
Test and inspection: JB/T9092, GB/T26480, API598, ISO5208, etc

Performance parameter

Nominal size: DN50~DN3600mm 2"~144"
Nominal pressure: PN2.5~PN260 Clas150~Class1500
Applicable temperature: -196℃~600℃
Main materials: carbon steel, molybdenum steel, Austenitic stainless steel, duplex stainless steel, titanium alloy, Hahn alloy, Monel alloy, etc

Product size

DN(mm)	PN 6										Approximate weight
DN(mm)	L	L1	L2	L3	D	D1	D2	C	H	N-d	Kg(L)	Kg(L1)	Kg(L2)	Kg(L3)
80	114	49	180	49	190	150	124	18	310	4-18	20	11	17	13
100	127	56	190	56	210	170	144	18	325	4-18	23	13	19	16
125	140	64	200	64	240	200	174	18	360	8-18	28	16	25	20
150	140	70	210	70	265	225	199	20	395	8-18	33	21	28	24
200	152	71	230	71	320	280	254	22	480	8-18	48	28	49	36
250	165	76	250	76	375	335	309	24	550	12-18	54	45	95	52
300	178	83	270	83	440	395	363	24	610	12-22	80	61	130	79
350	190	92	290	92	490	445	413	24	710	12-22	103	82	160	107
400	216	102	310	102	540	495	463	24	755	16-22	145	122	216	150
450	222	114	330	114	595	550	518	24	835	16-22	193	150	248	183
500	229	127	350	127	645	600	568	26	900	20-22	258	205	380	254
600	267	154	390	154	755	705	667	30	1060	20-26	302	300	495	398
700	292	165	430	165	860	810	772	26	1170	24-26	385	465	595	576
800	318	190	470	190	975	920	878	26	1320	24-30	525	570	740	690
900	330	203	510	203	1075	1020	978	26	1440	24-30	723	760	1230	870
1000	410	216	550	216	1175	1120	1078	26	1640	28-30	990	975	1450	1180
1200	470	254	630	254	1405	1340	1295	28	1720	32-33	1455	1250	2180	1490
1400	530	390	710	390	1630	1560	1510	32	2055	36-36	1860	1780	2980	2050
1600	600	440	790	440	1830	1760	1710	34	2185	40-36	2180	1990
1800	670	490	870	490	2045	1970	1918	36	2390	44-39	3950
2000	760	540	950	540	2265	2180	2125	38	2620	48-42
2200	800	590	1000	590	2475	2390	2335	42	2980	52-42
2400	850	650	1100	650	2685	2600	2545	44	3150	56-42
2600	900	700	1200	700	2905	2810	2750	46	3320	60-48
2800	950	760	1300	760	3115	3020	2960	48	3550	64-48
3000	1000	810	1400	810	3315	3220	3160	50	3770	68-48

DN(mm)	PN 10										Approximate weight
DN(mm)	L	L1	L2	L3	D	D1	D2	C	H	N-d	Kg(L)	Kg(L1)	Kg(L2)	Kg(L3)
80	114	49	180	49	200	160	132	20	310	8-18	22	11	17	13
100	127	56	190	56	220	180	156	22	325	8-18	24	13	19	19
125	140	64	200	64	250	210	184	22	360	8-18	30	16	25	23
150	140	70	210	70	285	240	211	24	395	8-22	38	21	28	29
200	152	71	230	71	340	295	266	24	480	8-22	56	28	49	51
250	165	76	250	76	395	350	319	26	550	12-22	70	45	95	69
300	178	83	270	83	445	400	370	26	610	12-22	92	61	130	109
350	190	92	290	92	505	460	429	26	710	16-22	115	82	178	143
400	216	102	310	102	565	515	480	26	755	16-26	169	122	238	195
450	222	114	330	114	615	565	530	28	835	20-26	220	150	275	265
500	229	127	350	127	670	620	582	28	900	20-26	265	205	423	335
600	267	154	390	154	780	725	682	34	1060	20-30	399	300	550	460
700	292	165	430	165	895	840	794	34	1170	24-30	489	465	665	740
800	318	190	470	190	1015	950	901	36	1320	24-33	652	570	815	920
900	330	203	510	203	1115	1050	1001	38	1440	28-33	880	760	1360	1180
1000	410	216	550	216	1230	1160	1112	38	1640	28-36	1215	975	1610	1320
1200	470	254	630	254	1455	1380	1328	44	1720	32-39	1790	1250	2415	1680
1400	530	390	710	390	1675	1590	1530	48	2010	36-42	2480	1780	3320	2160
1600	600	440	790	440	1915	1820	1750	52	2255	40-48	3220	2640
1800	670	490	870	490	2115	2020	1950	56	2480	44-48	4350
2000	760	540	950	540	2325	2230	2150	60	2660	48-48	5600

DN(mm)	PN 16										Approximate weight
DN(mm)	L	L1	L2	L3	D	D1	D2	C	H	N-d	Kg(L)	Kg(L1)	Kg(L2)	Kg(L3)
80	114	49	180	49	200	160	132	20	310	8-18	22	11	17	13
100	127	56	190	56	220	180	156	22	325	8-18	24	13	19	19
125	140	64	200	64	250	210	184	22	360	8-18	30	16	25	23
150	140	70	210	70	285	240	211	24	395	8-22	38	21	28	29
200	152	71	230	71	340	295	266	24	480	12-22	56	40	49	51
250	165	76	250	76	405	355	319	26	550	12-26	80	50	95	69
300	178	83	270	83	460	410	370	28	610	12-26	108	75	130	109
350	190	92	290	92	520	470	429	30	710	16-26	140	102	178	143
400	216	102	310	102	580	525	480	32	755	16-30	206	145	238	195
450	222	114	330	114	640	585	548	40	835	20-30	262	190	275	265
500	229	127	350	127	715	650	609	44	900	20-33	318	255	423	335
600	267	154	390	154	840	770	720	54	1060	20-36	470	360	550	460
700	292	165	430	165	910	840	794	40	1170	24-36	553	470	665	740
800	318	190	470	190	1025	950	901	42	1320	24-39	688	655	815	920
900	330	203	510	203	1125	1050	1001	44	1440	28-39	999	897	1360	1180
1000	410	216	550	216	1255	1170	1112	46	1640	28-42	1435	1132	1610	1320
1200	470	254	630	254	1485	1390	1328	52	1850	32-48	2200	1400	2415	1680
1400	530	390	710	390	1685	1590	1530	58	2040	36-48	3200	1900	3320	2160
1600	600	440	790	440	1930	1820	1750	64	2280	40-55	6000	2900
1800	670	490	870	490	2130	2020	1950	68	2495	44-55	6900	4000
2000	760	540	950	540	2345	2230	2150	70	2685	48-60	9100	5300

DN(mm)	PN 25										Approximate weight
DN(mm)	L	L1	L2	L3	D	D1	D2	C	H	N-d	Kg(L)	Kg(L1)	Kg(L2)	Kg(L3)
80	114	49	180	49	200	160	132	24	310	8-18	23	11	17	13
100	127	56	190	56	235	190	156	24	325	8-22	25	13	19	19
125	140	64	200	64	270	220	184	26	360	8-26	34	16	25	23
150	140	70	210	70	300	250	211	28	395	8-26	42	21	28	29
200	152	71	230	71	360	310	274	30	480	12-26	58	40	49	51
250	165	76	250	76	425	370	330	32	550	12-30	90	50	95	69
300	178	83	270	83	485	430	389	34	610	16-30	120	75	130	109
350	190	92	290	92	555	490	448	38	710	16-33	170	102	178	143
400	216	102	310	102	620	550	503	40	755	16-36	235	145	238	195
450	222	114	330	114	670	600	548	46	835	20-36	285	190	275	265
500	229	127	350	127	730	660	609	48	900	20-36	385	255	423	335
600	267	154	390	154	845	770	720	58	1060	20-39	580	360	550	460
700	292	165	430	165	960	875	820	50	1170	24-42	705	470	665	740
800	318	190	470	190	1085	990	928	54	1320	24-48	970	655	815	920
900	330	203	510	203	1185	1090	1028	58	1440	28-48	1225	897	1360	1180
1000	410	216	550	216	1320	1210	1140	62	1640	28-55	1680	1132	1610	1320
1200	470	254	630	254	1530	1420	1350	70	1850	32-55	2450	1580	2415	1680
1400	530	390	710	390	1755	1640	1560	76	2040	36-60	3600	2100	3320	2160

DN(mm)	PN 40
DN(mm)	L	L1	L2	L3	D	D1	D2	C	H	N-d
80	114	49	180	49	200	160	132	24	310	8-18
100	127	56	190	56	235	190	156	24	325	8-22
125	140	64	200	64	270	220	184	26	360	8-26
150	140	70	210	70	300	250	211	28	395	8-26
200	230	71	230	71	375	320	284	34	515	12-30
250	250	76	250	76	450	385	345	38	675	12-33
300	270	83	270	83	515	450	409	42	805	16-33
350	290	92	290	92	580	510	465	46	850	16-36
400	310	102	310	102	660	585	535	50	895	16-39
450	330	152	330	152	685	610	560	57	960	20-39
500	350	159	350	159	755	670	615	57	1030	20-42
600	390	181	390	181	890	795	735	72	1180	20-48

DN(mm)	PN 63
DN(mm)	L	L1	L2	L3	D	D1	D2	C	H	N-d
80	180	64	180	64	215	170	132	28	310	8-22
100	190	64	190	64	250	200	156	30	325	8-26
125	200	70	200	70	295	240	184	34	360	8-30
150	210	76	210	76	345	280	211	36	430	8-33
200	230	89	230	89	415	345	284	42	535	12-36
250	250	114	250	114	470	400	345	46	695	12-36
300	270	114	270	114	530	460	409	52	805	16-36
350	290	127	290	127	600	525	465	56	880	16-39
400	310	140	310	140	670	585	535	60	930	16-42
450	330	160	330	160	715	630	560	64	990	20-42
500	350	170	350	170	800	705	615	68	1050	20-48
600	390	200	390	200	930	820	735	76	1230	20-56

DN(mm)	PN 100
DN(mm)	L	L1	L2	L3	D	D1	D2	C	H	N-d
150	210	76	210	76	355	290	211	44	425	12-33
200	230	89	230	89	430	360	284	52	640	12-36
250	250	114	250	114	505	430	345	60	745	12-39
300	270	114	270	114	585	500	409	68	820	16-42
350	290	127	290	127	655	560	465	74	935	16-48
400	310	140	310	140	715	620	535	82	975	16-48
450	330	160	330	160	770	675	560	89	1110	20-48
500	350	170	350	170	870	760	615	94	1215	20-56
600	390	200	390	200	990	875	735	102	1300	20-62

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