GB/T3037 Marine Double-eccentric Center Butterfly Valve

GB/T3037 Marine Double-eccentric Center Butterfly Valve

GB/T3037 Marine Double-eccentric Center Butterfly Valve

Materials of main parts

Body Material: Cast Steel

Disc Material: Aluminum Bronze

Stem Material: Stainless Steel

Overview

Application: This GB/T3037 Marine Double-eccentric Center Butterfly Valve is designed for marine applications involving sea water, fresh water.

Material Specification:

Parts Name	Material Name	Material Grade
Body, Cover	Cast steel	ZG230-450
Disc	Aluminum Bronze	CuAl9Mn2
Stem, Piston	Stainless steel	2Cr13
Cylinder	Welded stainless steel	H2Cr13

Technical Specifications:

Model: GB/T3037 Marine Double-eccentric Center Butterfly Valve

Type	Nominal Pressure PN (MPa)	Nominal Diameter DN (mm)	Cylinder Working Pressure P (MPa)	Suitable Media
AS, AQ, ASS, AQS	0.25	20 ~ 150	0.3 ~ 0.7	Lubricating oil, Fuel oil
BS, BQ, BSS, BQS	0.25	20 ~ 150	0.3 ~ 0.7	Lubricating oil, Fuel oil

GB T3037-94 blueprint

Dimensions(mm)

Type A

PN MPa	DN	Structure dimensions								flange
PN MPa	DN	H	H1	H2	L1	L2	L3	L4	L	D	D1	n	d0	h
1.0	100	278	145	214	103	174	40	60	64	190	158	4	M14	21
	125	303	165	244	103	174	40	60	70	215	183
	150	361	180	276	134	207	50	73	76	240	208
	200	396	212	306	134	213	50	73	89	310	273		M16	24
	250	436	247	346	149	231	55	78	114	380	336		M20	30
	300	482	292	388	159	240	65	88	114	435	391
	350	520	342	422	179	262	80	93	127	485	441
	400	567	362	463	191	279	85	98	140	545	496		M24	36
	450	630	392	522	206	303	95	110	152	600	551
	500	673	418	561	221	318	105	115	152	650	601
1.6	100	278	145	214	103	174	40	60	64	205	167		M16	24
	125	303	165	244	103	174	40	60	70	225	187
	150	361	180	276	134	207	50	73	76	255	217
	200	396	212	306	134	213	50	73	89	325	281		M20	30
	250	436	247	346	149	231	55	78	114	390	341		M24	36
	300	482	292	388	159	240	65	88	114	445	396
	350	520	342	422	179	262	80	93	127	495	447
	400	567	362	463	191	279	85	98	140	560	505		M27	41
	450	630	392	522	206	303	95	110	152	610	555
	500	673	418	561	221	318	105	115	152	665	610

Type AS

PN MPa	DN	Structure dimension								flange
PN MPa	DN	H	H1	H2	L1	L2	L3	L4	L	D	D1	n	d0	h
1.0	100	278	145	214	103	174	40	60	64	220	180	4	M16	24
	125	303	165	244	103	174	40	60	70	250	210		M16	24
	150	361	180	276	134	207	50	73	76	285	240		M20	30
	200	396	212	306	134	213	50	73	89	340	295
	250	436	247	346	149	231	55	78	114	395	350
	300	482	292	388	159	240	65	88	114	445	400
	350	520	342	422	179	262	80	93	127	505	460
	400	567	362	463	191	279	85	98	140	565	515		M24	36
	450	630	392	522	206	303	95	110	152	615	565
	500	673	418	561	221	318	105	115	152	670	620
	550	745	445	630	236	338	120	125	170	730	675		M27	41
	600	774	479	655	266	368	145	135	178	780	725	8
	650	839	508	720	266	372	145	140	210	835	780
	700	872	538	749	301	407	175	155	229	895	840
	750	933	568	808	336	451	195	158	230	955	900		M30	45
	800	967	607	835	367	481	220	163	241	1015	950		M30	45

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