GB T/590 Marine Cast Iron Stop Valve Type A/AS

Materials of main parts

Body Material: Cast Iron

Disc Material: Cast Tin Bronze

Stem Material: Cast Alumium Bronze

Overview

Application: This GB T/590 Marine Cast Iron Stop Valve Type A/AS is designed for marine applications involving fresh water, lubricant oil, fuel oil, t≤220℃ steam.

Material Specification:

Parts Name	Material
	Name	Marks
Body, Cover	Cast iron	HT200
Disc	Cast tin bronze	ZCuSn10Zn2
Stem	Cast aluminum bronze	ZCuAl9Mn2
Seat	Aluminum bronze	CuAl9Mn2

Technical Specifications:

Model: GB T/590 Marine Cast Iron Stop Valve Type A/AS
Nominal Pressure(Mpa): Type A: PN1.0~PN1.6 Type AS: PN0.6~PN1.6
Nominal Diameter(mm): Type A: DN20~DN150 Type AS: DN20~DN300

Type	Nominal Pressure PN (MPa)	Nominal Diameter DN (mm)	Available Medium
A	1.0	65 ~ 150	Sea water, Fresh water, Lubricant oil, Fuel oil, t≤220℃ steam.
A	1.6	20 ~ 50
AS	0.6	50 ~ 300
	1.0	65 ~ 250
	1.6	20 ~ 50

Fundamental dimensions for Marine Cast Iron Flanged Stop valve GB/T590:

Chart1 Fundamental dimensions of type A:

PN	DN	Construction dimensions
PN	DN	L	H	Thickness	Flange					Bolt		Hand wheel		Lift Range	Weight(kg)
(MPa)	(mm)	A	A	6	D	D1	D2	do	b	n	Th	Do	S	m	A
1.0	65	290	310	9	155	123	104	15	15	6	M14	140	12	18	18.9
	80	310	345	9	170	138	118	15	15	8	M14	160	14	24	23.0
	100	350	374	10	190	158	138	15	15	8	M14	180	14	35	31.0
	125	400	426	10	215	183	164	15	15	10	M14	200	17	44	39.3
	150	480	482	11	240	208	190	15	16	12	M14	200	17	57	55.5
1.6	20	150	217	7	95	68	48	13	14	4	M12	80	8	7	5.7
	25	160	217	7	105	73	56	13	14	4	M12	80	8	7	6.0
	32	180	236	7	1 15	83	64	15	15	6	M14	100	9	9	7.0
	40	200	260	8	125	93	74	15	16	6	M14	120	1 1	11	9.2
	50	230	288	8	135	103	84	15	16	6	M14	140	12	14	11.9

Chart2 Fundamental dimensions of type AS:

PN	DN	Construction dimensions
PN	DN	L	H	Thickness	Flange					Bolt		Hand wheel		Lift Range	Weight(kg)
(MPa)	(mm)	AS	AS	6	D	D1	D2	do	b	n	Th	Do	S	m	AS
0.6	50	230	288	8	140	1 10	90	14	16	4	M12	140	12	14	12.2
	65	290	310	9	160	130	1 10	14	16	4	M12	140	12	18	19.2
	80	310	345	9	190	150	128	18	18	4	M16	160	14	24	23.8
	100	350	374	10	210	170	148	18	18	4	M16	180	14	35	34.5
	125	400	426	10	240	200	178	18	20	8	M16	200	17	44	42.5
	150	480	482	11	265	225	202	18	20	8	M16	200	17	57	58.7
	175	540	557	11	295	255	232	18	22	8	M16	200	17	60	76.8
	200	600	621	11	320	280	258	18	22	8	M16	280	24	68	102.0
	250	730	721	13	375	335	312	18	24	12	M16	360	27	80	158.0
	300	850	794	13	440	395	365	22	24	12	M20	450	32	100	218.0
1.0	65	290	310	9	185	145	122	18	20	4	M16	140	12	18	21.6
	80	310	345	9	200	160	133	18	22	8	M16	160	14	24	26.0
	100	350	374	10	220	180	158	18	24	8	M16	180	14	35	35.0
	125	400	426	10	250	210	184	18	26	8	M16	200	17	44	44.3
	150	480	482	11	285	240	212	22	26	8	M20	200	17	57	62.7
	175	540	557	11	315	270	242	22	28	8	M20	280	24	60	80.3
	200	600	621	11	340	295	268	22	28	8	M20	360	27	68	106.0
	250	730	721	13	395	350	320	22	28	12	M20	450	32	80	160.0
1.6	20	150	217	7	105	75	58	14	16	4	M12	80	8	7	6.2
	25	160	217	7	1 15	85	68	14	16	4	M12	80	8	7	6.6
	32	180	236	7	140	100	78	18	18	4	M16	100	9	9	8.6
	40	200	260	8	150	1 10	88	18	18	4	M16	120	1 1	1 1	11.0
	50	230	288	8	165	125	102	18	20	4	M16	140	12	14	14.2