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Safety Valve Series

• Safety Relief Valve
• Pressure Relief Valve
• Balanced Safety Relief Valve
• Pilot Operated Safety Relief Valve
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Product drawing»

Structural drawing»

Spring Low Lift Closed High Pressure Safety Valve

product drawing

Applications

A41Y-160/320 type spring low lift closed high pressure safety valve (single flange) is applied to equipments and pipes of air, ammonia hydrogen gas mixture, water and other media that working temperature is ≤ 300 ℃. A41Y-160P/320P, A41Y-160R, 320R-type spring low lift closed high pressure safety valve (double flange) is suitable for working temperature ≤ 200 ℃ corrosive gas or liquid media equipment and pipes, used as the overpressure protection device. A41Y-160/320 spring low lift high pressure safety valve connection flange is according to JB/T2769-92 standards.

Dimensions & constructral diagram

The materials of main parts

No.	part name	A42Y-160 A42Y-320 materials	A42Y-160P A42Y-320P materials	A42Y-160R A42Y-320R materials
1	flange	35/35CrMoA	2Cr13	1Cr18Ni12Mo2Ti
2	seat	2Cr13	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
3	body	40	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
4	regulative ring	2Cr13	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
5	disc	2Cr13	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
6	recoil plate	2Cr13	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
7	guide sleeve	2Cr13	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
8	bonnet	ZG230-450	ZG230-450	ZG230-450
9	stem	2Cr13	1Cr18Ni9Ti	1Cr18Ni9Ti
10	spring	50CrVA	50CrVA packed with fluoroplastic	50CrVA packed with fluoroplastic
11	regulative bolt	45	2Cr13	2Cr13
12	cap	ZG200-400	ZG200-400	ZG200-400
	sealing surface material	bead weld Co-based hard alloy

External and connection dimensions

nominal pressure PN（MPa）	nominal diameter DN（mm）	dimensions（mm）																		weight（kg）
		do	d	D	D1	M	D2	B	Z-Φd	DN	D	D1	M	D2	b	Z-Φd	L	L1	H
16 （single flange）	15	7	16	95	60	M-24×2	18	20	3-18	-	36	-	M-33×2	-	-	-	45	80	105	4
	20	10	19	95	60	M-33×2	22	20	3-18	-	48	-	M-33×2	-	-	-	45	80	105	4.5
	25	12	23	105	68	M-33×2	28	20	3-18	-	48	-	M-33×2	-	-	-	45	80	105	5.2
16	15	8	15	95	60	M-24×2	18	20	3-18	32	115	-	M-42×2	37	22	4-18	95	100	259	7.8
	20	10	23	98	60	M-24×2	20	20	3-18	40	165	-	M-52×2	47	28	6-26	110	115	266	11.5
	25	12	23	105	68	M-33×2	28	20	3-18	40	165	-	M-52×2	47	28	6-26	110	115	266	12.5
	32	15	25	115	80	M-42×2	37	22	4-18	50	165	115	M-64×3	59	32	6-26	130	1450	335	21.3
	40	20	39	165	115	M-52×2	47	28	6-26	65	200	145	M-80×3	74	40	6-29	150	170	390	35.3
	50	25	48	165	115	M-64×3	59	32	6-26	80	225	170	M-100×3	94	50	6-33	190	210	393	48
32	15	8	17	105	68	M-33×2	29	20	3-18	32	115	80	M-42×2	37	22	4-18	95	100	259	8.1
	20	10	23	105	68	M-33×2	29	20	3-18	40	165	115	M-52×2	47	28	6-26	110	115	266	12
	25	12	23	115	80	M-42×2	36	22	4-18	40	165	115	M-52×2	47	28	6-26	110	115	266	13
	32	14	30	135	95	M-48×2	41	25	4-22	50	165	115	M-64×3	59	32	6-26	130	140	335	22.2
	40	16	38	165	115	M-64×3	57	32	6-26	65	200	145	M-80×3	70	40	6-29	150	170	390	37
	50	20	48	200	145	M-80×3	70	40	6-29	80	225	170	M-100×3	94	50	6-33	190	210	393	55

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