GB T1852-93 Cast Steel Pressure Reducing Valve

GB T1852-93 Cast Steel Pressure Reducing Valve

1. Application

GB T1852-93 Cast Steel Pressure Reducing Valve applies to steam with a temperature of less than 250 degrees.

2. Material

(1) body: cast steel

(2) diaphragm: cast tin bronze

(3) spring: spring steel

the material of goods can be chosen according to your needs.

3. Technical Data

(1) nominal pressure(MPa): p1:0.4~2.5; p2: 0.2/0.6~0.6/1.2

(2) nominal diameter(mm): inlet: 20~150; outlet:25~200

4. Features

(1) Excellent quality and beautiful shape.

(2) We can provide samples if necessary.

5. Dimensions(mm)

Flange connection size according to GB T569

DN		Structure dimension			Flange connection size
					PN 2.5 Inlet							PN 1.6 Outlet
					D1	D2	D3	d1	bolt		b1	D4	D5	D6	d2	bolt		b2
DN1	DN2	L	H	h					n1	Th1.						n2	Th
20	25	170	250	75	95	68	48	13	4	M12	11	105	73	56	13	4	M12	12
25	32				105	73	56				12	115	83	64	15	6	M14	13
32	40	200	260	80	115	83	64	15	6	M14	13	125	93	74
40	50	210	270	85	125	93	74					135	103	84
50	65	240	290	115	135	103	84					170	132	110	17	8	M16	15
65	80		300		170	132	110	17	8	M16	15	185	147	126				16
80	100	280	320	120	185	147	126				16	205	167	146		10
100	125	330	350	150	205	167	146		10			225	187	168
125	150	380	360	190	240	196	172	21		M20	19	255	217	196		12		20
150	200	470	425	225	270	226	200		12		20	325	281	254	21		M20

Flange connection size according to GB T2501’s type S

DN		Structure dimension			Flange connection size
					PN 2.5 Inlet							PN 1.6 Outlet
					D1	D2	D3	d1	bolt		b1	D4	D5	D6	d2	bolt		b2
DN1	DN2	L	H	h					n1	Th1.						n2	Th
20	25	170	250	75	105	75	58	14	4	M12	16	115	85	68	14	4	M12	16
25	32				115	85	68					140	100	78	18		M16	18
32	40	200	260	80	140	100	78	18		M16	18	150	110	88
40	50	210	270	85	150	110	88					165	125	102
50	65	240	290	115	165	125	102				20	185	145	122				20
65	80		300		185	145	122		8		22	200	160	133		8
80	100	280	320	120	200	160	133				24	220	180	158				22
100	125	330	350	150	235	190	158	22		M20		250	210	184
125	150	380	360	190	270	220	184	26		M24	26	285	240	212	22		M20	24
150	200	470	425	225	300	250	212					340	295	268		12

6. IACS Certificate: BAS, BV, CCS, DNV, RINA, KR, LR, NK.