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GB MARINE VALVE

Marine Cast Iron Stop Check Valve GB/T591-1993

Marine Cast Iron Stop Check Valve GB/T591-1993:

1.Design standard:GB/T11689.

2.End standard:GB/T2501&GB/T569.

3.End type:Flange.

4.PN:0.6/1.0/1.6Mpa.

5.DN:50mm-300mm.

6.Main material:

Body/Bonnet:HT200;
Seat:SS410/BC;
Stem:SS410/BS;
Disc:SS410/BC.

7.Application:Sea water piping,fresh water piping,oil piping and steam piping.

8.Function:Such valves are used for on-off and preventing refluence.

Chart 1 Fundamental dimensions of type A and B:

PN (MPa)	DN (mm)	Structure Dimension					Thickness	Flange					Bolt		Hand wheel		Lift Range m	Weight(kg)
		L		H≈		H1		Flange					Bolt		Hand wheel			Weight(kg)
		A	B	A	B	B		D	D1	D2	d0	b	n	Th	Do	S		A	B
1.0	65	290	1 15	310	277	115	9	155	123	104	15	15	6	M14	140	12	18	18.9	16.7
	80	310	125	345	304	125	9	170	138	118	15	15	8	M14	160	14	24	23.0	19.9
	100	350	150	374	325	135	10	190	158	138	15	15	8	M14	180	14	35	31.O	27.2
	125	400	175	426	366	155	10	215	183	164	15	15	10	M14	200	17	44	39.3	37.5
	150	480	180	482	410	160	11	240	208	190	15	16	12	M14	200	17	57	55.5	48.4
1.6	20	150	75	217	203	75	7	95	68	48	13	14	4	M12	80	8	7	5.7	5.1
	25	160	80	217	203	80	7	105	73	56	13	14	4	M12	80	8	7	6.0	5.6
	32	180	85	236	216	85	7	115	83	64	15	15	6	M14	100	9	9	7.0	6.9
	40	200	90	260	236	90	8	125	93	74	15	16	6	M14	120	11	11	9.2	8.5
	50	230	95	288	258	95	8	135	103	84	15	16	6	M14	140	12	14	11.9	11.3

Chart 2 Fundamental dimensions of type AS and BS:

PN/Mpa	DN/mm	Constructiondimension					Thickness
		L		H		H1	Thickness	flange					Bolt		Hand wheel		Lift range	Weight/kg
		AS	BS	A	BS	BS	mm	D	D1	D2	d0	b	n	Th.	Do	S	m	AS	BS
0.6	50	230	125	288	258	125	8	140	110	90	14	16	4	M12	140	12	14	12.2	12.2
	65	290	145	310	277	145	9	160	130	110	14	16	4	M12	140	12	18	19.2	17.7
	80	310	155	345	304	155	9	190	150	128	18	18	4	M16	160	14	24	23.8	21.7
	100	350	175	374	325	175	10	210	170	148	18	18	4	M16	180	14	35	34.5	32.3
	125	400	200	426	366	200	10	240	200	178	18	20	8	M16	200	17	44	42.5	42.8
	150	480	225	482	410	225	11	265	225	202	18	20	8	M16	200	17	57	58.7	55.8
	175	540	225	557	489	225	11	295	255	232	18	22	8	M16	200	17	60	76.8	70.3
	200	600	275	621	549	275	11	320	280	258	18	22	8	M16	280	24	68	102	95.6
	250	730	325	721	623	325	13	375	335	312	18	24	12	M16	360	27	80	158	151
	300	850	375	794	691	375	13	440	395	365	22	24	12	M20	450	32	100	218	207
1	65	290	145	310	277	145	9	185	145	122	18	20	4	M16	140	12	18	21.6	20.1
	80	310	155	345	304	155	9	200	160	133	18	22	8	M16	160	14	24	26	23.9
	100	350	175	374	325	175	10	220	180	158	18	24	8	M16	180	14	35	35	32.8
	125	400	200	426	366	200	10	250	210	184	18	26	8	M16	200	17	44	44.3	44.6
	150	480	225	482	410	225	11	285	240	212	22	26	8	M20	200	17	57	62.7	59.8
	175	540	225	557	489	225	11	315	270	242	22	28	8	M20	280	24	60	80.3	73.8
	200	600	275	621	543	275	11	340	295	268	22	28	8	M20	360	27	68	106	99.6
	250	730	325	721	623	325	13	395	350	320	22	28	12	M20	450	32	80	160	153
1.6	20	150	95	217	203	95	7	105	75	58	14	16	4	M12	80	8	7	6.2	5.7
	25	160	100	217	203	100	7	115	85	68	14	16	4	M12	80	8	7	6.6	6.4
	32	180	105	236	216	105	7	140	100	78	18	18	4	M16	100	9	9	8.6	8.7
	40	200	115	260	236	115	8	150	110	88	18	18	4	M16	120	11	11	11	10.7
	50	230	125	288	258	125	8	165	125	102	18	20	4	M16	140	12	14	14.2	14.2