Closed Spring Loaded Low Lift Type-High Pressure Safety Valve

Model
A41Y/A42Y/A44Y/A48Y/

Closed Spring Loaded Low Lift Type-High Pressure Safety Valve applications

A41Y-160/320 types are used for the equipment and pipeline of the air, N2, H2 mixed gas, water etc. medium what the working temperature are less than 200℃. A41Y-160P/320P, A41Y-160R/320R type are used for the equipment and pipeline of the quality with corrode gas and liquid medium what the working temperature are less than 200℃. Take for extra pressure protection devices.
Flange connecting dimensions of comply with Standard of JB/T2769-92.
A42Y-C type are used for the equipment and pipeline of the air, petroleum gas, liquid etc medium what the working tempera-true are less than 300℃.
A42Y-P type and A42Y-R type are used for the equipment and pipeline of the quality with corrode medium What the working temperature are less than 200℃. A48Y is be used in equipments and pipelines of steam, air with operation temperature no higher than 350. Take for extra pressure protection devices.
Flange connecting dimensions of comply with Standard series first of JB/T: -94, Comply with Standard Service of JB/T----94 when more than 6.4Mpa.
A48Y type are used for the equipment and pipeline of the with steam and air etc medium what the working temperature are less than 350℃. A44Y type are used for the equipment and pipeline of the with air and petroleum gas medium what the working temperature are less than 300℃. Take for extra pressure protection Devices.
Flange connecting dimensions of comply with Standard series first and second of JB/T-94 when the pressure less than 6.4Mpa, comply with Standard series second of JB/T-94 when more than 6.4Mpa.

Closed Spring Loaded Low Lift Type-High Pressure Safety Valve brief figure of structure

Closed spring loaded low lift type-high pressure safety valve dimensions (mm)Top of page

Type	DN	do	d	M	D	K	Z-∮d	b	d1	M1	D1	K1	Z1-∮d1	b1	L	L1	≈H
A41Y-160	15	8	20	M24×2	95	60	3-18	20	/	M33×2	36	/	/	/	50	80	85
	20	10	25	M27×2	95	60	3-18	20	/	M33×2	48	/	/	/	50	80	85
	25	12	28	M33×2	105	68	3-18	20	/	M33×2	48	/	/	/	50	80	85
A41Y-160	10	8	18	M24×2	95	60	3-18	20	29	M42×2	115	80	4-18	22	95	100	261
	15	8	20	M24×2	95	60	3-18	20	29	M42×2	115	80	4-18	22	95	100	261
	20	10	27	M33×2	105	68	3-18	20	29	M42×2	115	80	4-18	22	95	100	261
	25	12	28	M42×2	105	68	3-18	20	50	M64×3	165	115	6-26	32	130	135	285
	32	12.14.16	37	M52×2	115	80	4-18	22	50	M64×3	165	115	6-26	32	130	135	285
	40	20	47	M64×2	165	115	6-26	28	65	M80×3	200	145	6-29	40	165	165	350
	50	25	58	M26×2	165	115	6-26	32	80	M100×3	225	170	6-33	80	165	165	380
A41Y-320	10	8	18	M24×2	95	60	3-18	20	29	M42×2	115	80	4-18	22	95	100	261
	15	8	27	M33×2	105	68	3-18	20	29	M42×2	115	80	4-18	22	95	100	261
	20	10	30	M36×2	110	75	3-18	20	29	M42×2	115	80	4-18	22	95	100	261
	25	12	35	M42×2	115	80	4-18	22	50	M64×3	165	115	6-26	32	130	135	285
	32	12.14.16	41	M48×2	135	95	4-22	25	50	M64×3	165	115	6-26	32	130	135	285
	40	20	58	M64×3	165	115	6-26	32	65	M80×3	200	145	6-29	40	165	115	350
	50	25	70	M80×3	200	145	6-29	40	80	M100×3	225	170	6-33	50	165	165	380

Nominal Diameter DN (mm)	Dimensions (mm)
	d0	L	L1	DN’
25	15	110	95	32
32	20	115	100	40
40	25	120	110	50
50	32	165	120	65
65	40	160	135	80
80	50	170	135	100
100	65	195	175	125
125	80	210	190	150
150	100	255	230	175
200	125	300	260	250
250	150	350	320	300
300	200	380	350	400
350	300	500	450	500
400	350	500	450	500

Nominal Diameter DN (mm)	Dimensions (mm)
	d0	L	L1	DN′
25	15	110	105	32
32	20	130	110	40
40	25	135	120	50
50	32	160	130	65
80	50	175	160	100
100	65	220	200	125
150	100	285	260	200
200	125	350	320	250

Nominal Pressure PN (MPa)	Nominal Diameter DN (mm)	Dimensions (mm)
		L	L1	d0	DN’
1.6 2.5 4.0	25	110	95	15	32
	32	115	100	20	40
	40	120	110	25	50
	50	135	120	32	65
	65	160	135	40	80
	80	170	135	50	100
	100	195	175	65	125
	150	255	230	100	175
	200	300	260	125	250
6.4 10.0	25	110	105	15	32
	32	130	110	20	40
	40	135	120	25	50
	50	160	130	32	65
	80	175	160	50	100
	100	220	200	65	125
	150	285	260	100	200

Closed spring loaded full bore type safety valve materials for main partsTop of page

No.	Name of part	A42Y-C  A48Y-C  KA42Y-C Materials	A42Y-P/KA42Y-P Materials	A42Y-R Materials	DA42Y-P Materials
1	Nozzle	2Cr13/1Cr18Ni9Ti	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti	ZG1Cr18Ni9Ti
2	Body	WCB	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti	LCB/ZG1Cr18Ni9Ti
3	Adjusting ring	2Cr13/1Cr18Ni9Ti	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti	1Cr18Ni9Ti
4	Disc holder	2Cr13/1Cr18Ni9Ti	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti	1Cr18Ni9Ti
5	Disc	2Cr13/1Cr18Ni9Ti	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti	1Cr18Ni9Ti
6	Guide sleeve	2Cr13/1Cr18Ni9Ti	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti	1Cr18Ni9Ti
7	Bonnet	ZG230-450	ZG230-450	ZG230-450	ZG1Cr18Ni9Ti
8	Spring	50CrVA	Coated Teflon	Coated Teflon	50Cr18Ni9Ti
9	Stem	2Cr13	1Cr18Ni9Ti/1Cr18Ni12Mo2Ti	1Cr18Ni9Ti/1Cr18Ni12Mo2Ti	1Cr18Ni9Ti
10	Adjusting bolt	45	2Cr13	2Cr13	2Cr13
11	Cap	ZG200-400	ZG200-400	ZG200-400	ZG230-450
Sealing surface of material		Depositing satellite

No.	Name of part	A48Y-C A44Y-C A42Y-C Materials	A44Y-P  A42Y-P Materials	A44Y-R  A42Y-R Materials
1	Body	WCB	ZG1Cr18Ni9Ti	CF8M
2	Nozzle	2Cr13	1Cr18Ni9Ti	316
3	Adjusting ring	ZG2Cr13	ZG1Cr18Ni9Ti	0Cr18Ni12Mo2Ti
4	Disc holder	ZG2Cr13	ZG1Cr18Ni9Ti	316
5	Disc	2Cr13	1Cr18Ni9Ti	316
6	Guide sleeve	2Cr13	1Cr18Ni9Ti	0Cr18Ni12Mo2Ti
7	Bonnet	ZG230-450	ZG230-450	ZG230-450
8	Spring	50CrVA	Coated Teflon	Coated Teflon
9	Stem	2Cr13	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
10	Lever	ZG200-400	ZG200-400	ZG200-400
11	Adjusting bolt	45	2Cr13	2Cr13
12	Cap	ZG200-400	ZG200-400	316
Sealing surface of material		Depositing satellite

Closed spring loaded full bore type safety valve ralated productsTop of page

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