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GB MARINE VALVE

Marine Flanged Cast Steel Steam Pressure reducing valve GB/T1852-1993

Marine Flanged Cast Steel Steam Pressure reducing valve GB/T1852-1993:

1.Design standard:GB/T1852-1993.

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

3.End type:Flange.

4.Steam pressure:

5.DN:

6.Main material:

7.Application:Steam with temprature below 300℃.

8.Function:Such valves are mainly used for steam pressure reducing.

9.Fundamental dimensions of Marine Flanged Cast Steel Steam Pressure reducing valve GB/T1852-1993:

Chart 1 Fundamental dimensions of valves with end standard GB/T569:

DN/mm		Structure dimension/mm			Thickness δ/mm	Flange connection dimension/mm														Weight
DN/mm		Structure dimension/mm				PN2.5 Inlet							PN1.6 Outlet							Weight
DN1	DN2	L	H	h		D₁	D₂	D₃	d₁	Bolt		b₁	D₄	D₅	D₆	d₂	Bolt		b₂	kg
DN1	DN2	L	H	h		D₁	D₂	D₃	d₁	n₁	Th₁	b₁	D₄	D₅	D₆	d₂	n₂	Th₂	b₂	kg
20	25	170	250	75	6	95	68	48	13	4	M12	11	105	73	56	13	4	M12	12	15
25	32	170	250	75	6	105	73	56	13	4	M12	12	115	83	64	15	6	M14	13	16
32	40	200	260	80	7	115	83	64	15	6	M14	13	125	93	74					21
40	50	210	270	85		125	93	74					135	103	84					23
50	65	240	290	115		135	103	84					170	132	110	17	8	M16	15	24
65	80	240	300	115		170	132	110	17	8	M16	15	185	147	126		8		16	40
80	100	280	320	120	8	185	147	126		8		16	205	167	146		10			43
100	125	330	350	150	9	205	167	146		10		16	225	187	168		10			72
125	150	380	360	190	11	240	196	172	21	10	M20	19	255	217	196		12		20	90
150	200	470	425	225	13	270	226	200	21	12	M20	20	325	281	254	21	12	M20	20	120

Chart 2 Fundamental dimensions of valves with end standard GB/T2501:

DN/mm		Structure dimension/mm			Thickness δ/mm	Flange connection dimension/mm														Weight
DN/mm		Structure dimension/mm				PN2.5 Inlet							PN1.6 Outlet							Weight
DN1	DN2	L	H	h		D₁	D₂	D₃	d₁	Bolt		b₁	D₄	D₅	D₆	d₂	Bolt		b₂	kg
DN1	DN2	L	H	h		D₁	D₂	D₃	d₁	n₁	Th₁	b₁	D₄	D₅	D₆	d₂	n₂	Th₂	b₂	kg
20	25	170	250	75	6	105	75	58	14	4	M12	16	115	85	68	14	4	M12	16	16
25	32	170	250	75	6	115	85	68	14		M12	16	140	100	78	18		M16	18	17
32	40	200	260	80	7	140	100	78	18		M16	18	150	110	88					22
40	50	210	270	85		150	110	88				18	165	125	102					24
50	65	240	290	115		165	125	102				20	185	145	122				20	26
65	80	240	300	115		185	145	122		8		22	200	160	133		8		20	42
80	100	280	320	120	8	200	160	133				24	220	180	158				22	46
100	125	330	350	150	9	235	190	158	22		M20	24	250	210	184				22	74
125	150	380	360	190	11	270	220	184	26		M24	26	285	240	212	22		M20	24	96
150	200	470	425	225	13	300	250	212	26		M24	26	340	295	268	22	12	M20	24	127