GB/T 585-1999 Type B/BS Flanged Stop Check Valve | Marine Angle Type Dual-Purpose Valve

GB/T585-1999 Type B/BS Flanged Stop Check Valve

GB/T 585-1999 Type B/BS flanged stop check valve features a 90° angle body design that integrates three functions in one unit: manual shut-off, automatic backflow prevention, and 90-degree flow direction change, eliminating the need for separate elbows and multiple valves. Built to Chinese marine standards with cast steel construction and flanged ends, this compact angle-type valve reduces piping connections and potential leak points, making it ideal for space-constrained installations at pipeline corners where flow direction must change while requiring both flow control and non-return protection.

Overview

Appliation: Specifically designed for 90-degree piping intersections on ships and offshore platforms, this angle stop check valve is commonly installed at equipment inlets/outlets, pump discharge lines, and compact engine room spaces where pipeline direction changes coincide with the need for backflow prevention. It is also preferred in shipbuilding projects aiming to simplify piping layouts and reduce overall installation weight by replacing the traditional combination of elbow + stop valve + check valve with a single multi-functional component.

Material Specification:

Parts Name		Material Name	Marks
Cover		Cast steel	ZG230-450
Disc		High-quality Carbon steel	25
Stem		Stainless steel	2Cr13
Disc seal ring		Stainless steel (welded)	H2Cr13
Body seal ring	PN ≤ 2.5	Stainless steel (welded)	H1Cr18Ni9Ti
	PN ≥ 4.0		H2Cr13

Technical Specification:

Nominal Pressure (MPa)	Nominal Diameter (mm)	Available Medium
1	65 ~ 300	Fresh water, Lubricant oil, Fuel oil, steam of 300 ℃ and under.
1.6	100 ~ 250
2.5	20 ~ 150
4	65 ~ 100	Fresh water, Lubricant oil, Fuel oil, steam of 400 ℃ and under.
6.4	20 ~ 50

Drawing:

GBT584-1999 BS.png

Dimension:

PN1.0、1.6、2.5MPa B Type Elementary Dimensions(Unit: mm)

PN (Mpa)	DN (mm)	Frame dimension			tickness	Flange					Bolt		hand wheel		Lift Range m	Weight (kg)
PN (Mpa)	DN (mm)	L	H≈	H₁	tickness	D	D₁	D₂	D₀	b	n	Th	D₀	S	Lift Range m	Weight (kg)
1	65	115	275	115	6	155	123	104	15	14	6	M14	140	12	17	12.7
	80	125	298	125	7	170	138	118			8		160	14	20	17.8
	100	150	315	150	8	190	158	138			8		180	14	25	23.8
	125	175	354	175	8	215	183	164			10		200	17	32	33.4
	150	180	396	180	9	240	208	190			12		200	17	38	41.3
1.6	125	175	393	175	8	225	187	168	17	15	10	M16	250	22	32	37.7
1.6	150	180	433	180	9	255	217	196	17	15	12	M16	280	24	38	50.5
2.5	20	75	203	75	6	95	68	48	13	11	4	M12	80	8	7	4.3
	25	80	203	80		105	73	56	13	12	4	M12	80	8	7	6.8
	32	85	216	85		115	83	64	15	13	6	M14	100	9	9	6.0
	40	90	236	90	7	125	93	74					120	11	11	8.3
	50	95	258	95		135	103	84					140	12	14	12.7
	65	115	301	115		170	132	110	17	15	8	M16	160	14	17	16.9
	80	125	321	125		185	147	126		16	8		200	17	20	23.2
	100	150	368	150	8	205	167	146		16	10		250	22	25	30.8
	125	175	420	175	9	240	196	172	21	19	10	M20	280	24	32	47.1
	150	200	465	200	9	270	226	200	21	20	12	M20	320	27	38	59.9

N4.0, 6.4MPa B-type Dimensions (mm)

PN (Mpa)	DN	Frame dimension			thickness	Flange								Bolt		hand wheel		Lifting Range m	Weight (kg)
PN (Mpa)	DN	L	H≈	H1	thickness	D	D₁	D₂	D₃	D₄	F	d₀	b	n	Th	D₀	S	Lifting Range m	Weight (kg)
4	65	125	374	125	8	175	137	118	110	94	3	17	18	8	M16	250	22	17	32.3
	80	140	394	130	9	190	152	130	121	105	3	17	18	8	M16	250	22	20	37.3
	100	165	416	145	9	225	181	157	150	128	4	21	21	10	M20	280	24	25	44.3
6.4	20	80	243	85	7	105	73	58	51	35	3	13	13	6	M12	100	9	7	6.3
	25	85	253	90		115	83	66	58	42		15	15		M14	120	11	9	7.4
	32	90	281	95		125	93	74	66	50		15	17		M14	120	11	11	9.0
	40	105	310	110		145	107	84	76	60		17	19		M16	160	14	14	16.3
	50	110	323	115	8	155	117	96	88	72		17	20		M16	180	14	13	20.3

PN1.0、1.6MPa BS type Elementary Dimensions(Unit:mm)

PN (Mpa)	DN (mm)	Frame dimension			thickness	Flange					bolt		hand wheel		Lifting Range m	Weight (kg)
PN (Mpa)	DN (mm)	L	H≈	H₁	thickness	D	D₁	D₂	D₀	b	n	Th	D₀	S	Lifting Range m	Weight (kg)
1	200	275	525	275	10	340	295	268	22	24	8	M20	360	27	50	104
	250	325	608	325	11.5	395	350	320		26	12		450	32	65	160
	300	375	671	375	13	445	400	370		26	12		500	36	75	216
1.6	100	175	368	175	8	220	180	158	18	18	8	M16	250	22	25	32
	125	200	393	200	8	250	210	184	18	18		M16	250	22	32	45.5
	150	225	433	225	9	285	240	212	22	22		M20	280	24	38	61.4
	175	225	490	225	10	315	270	242					360	27	45	87.9
	200	275	547	275	10	340	295	268			12		450	32	50	116
	250	325	631	325	11.5	405	355	320	26	26	12	M24	500	36	65	173

PN2.5MPa BS type Elementary Dimensions(Unit:mm)

PN (Mpa)	DN	Frame dimension			thickness	Flange					bolt		hand wheel		Lifting Range m	Weight (kg)
PN (Mpa)	DN	L	H≈	H₁	thickness	D	D₁	D₂	D₀	b	n	Th	D₀	S	Lifting Range m	Weight (kg)
2.5	20	95	203	95	6	105	75	58	14	16	4	M12	80	8	7	5.4
	25	100	203	100		115	85	68	14	16		M12	80	8	7	6.2
	32	105	216	105		140	100	78	18	18		M16	100	9	9	8.3
	40	115	236	115	7	150	110	88		18			120	11	11	10.7
	50	125	258	125		165	125	102		20	8		140	12	14	14.2
	65	145	301	145		185	145	122		22			160	14	17	20.5
	80	155	321	155	8	200	160	133		24			200	17	20	26.6
	100	175	368	175	8	235	190	158	22	24		M20	250	22	25	37.5
	125	200	420	200	9	270	220	184	26	26		M24	280	24	32	57.1
	150	225	465	225	9	300	250	212	26	28		M24	320	27	38	73.7

PN4.0、6.4MPa BS Type Elementary Dimensions(Unit:mm)

PN (Mpa)	DN	Frame dimension			thickness	Flange								bolt		hand wheel		Lifting Range m	Weight (kg)
PN (Mpa)	DN	L	H≈	H₁	thickness	D	D₁	D₂	D₄	D₃	f	d₀	b	n	Th	D₀	S	Lifting Range m	Weight (kg)
4	65	145	374	145	8	185	145	122	94	110	3	18	22	8	M16	250	22	17	35.8
	80	155	394	155	9	200	160	133	105	121		18	24		M16	250	22	20	42.4
	100	175	416	175	9	235	190	158	128	150		22	24		M20	280	24	25	50.7
6.4	20	115	243	115	7	130	90	58	35	51		18	22	4	M16	100	9	7	7.9
	25	115	253	115		140	100	68	42	58		18	24		M16	100	9	7	9.7
	32	130	281	130		155	110	78	50	66		22	24		M20	120	11	9	11.9
	40	130	310	130		170	125	88	60	76			26			160	14	11	20.3
	50	150	323	150	8	180	135	102	72	88			26			180	14	13	25.6