4123 Spring Loaded Full Lift Type With Lever Safety Relief Valve

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Product Overview
Specifications
Downloads

Product Overview

Series

a48y-16c, a48y-25, a48y-40, a48y-64, a48y-100, a44y-16c, a44y-25, a44y-40, a44y-64, a44y-100, a44y-16p, a44y-25p, a44y-40p, a44y-64p, a44y-100p, a44y-16r, a44y-25r, a44y-40r, a44y-64r, a44y-100r

Application

A48Y type is suitable for equipment and pipeline of air, steam and other media with working temperature ≤ 350°C. A44Y type is suitable for equipment or pipeline of air, petroleum and other media with working temperature ≤ 300°C.

A44Y type is suitable for the equipment or pipeline of air, petroleum and other media with the working temperature ≤ 300℃, as the overpressure protection device.
Connection flange standard PN＜6.4MPa is according to the standard of JB/T-94 series 1. PN≥6.4MPa is according to the standard of JB/T-94 series 2.

Specifications

Main parts and materials

No.	Parts Name	A48Y-C/A44Y-C Materials	A44Y-P Material	A44Y-R Materials
1	Valve body	WCB	ZG1Cr18Ni9Ti	CF8M
2	Valve Seat	2Crl3	1Cr18Ni9Ti	316
3	Adjustment ring	ZG2Crl3	ZG1Cr18Ni9Ti	0cr18Ni12Mo2Ti
4	反冲盘	ZG2Crl3	ZG1Cr18Ni9Ti	316
5	Valve disc	2Cr13	1Cr18Ni9Ti	316
6	Guide sleeve	2Cr13	1Cr18Ni9Ti	0Cr18Ni12Mo2Ti
7	Valve cover	ZG230-450	ZG1Cr1818Ni9Ti	CF8M
8	Spring	50CrVA	50CrVA coated fluoroplastic	50CrVA coated fluoroplastic
9	Valve stem	2Crl3	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
10	Wrench	ZG200-400	ZG230-450	ZG200-400
11	Adjusting screw	45	2Cr13	2Cr13
12	Protective cover	ZG200-400	ZG1Cr18Ni9Ti	316
	Sealing surface material	Surfacing Co-based cemented carbide

* The content is for reference only. Please contact us for more information.

Main dimensions

Model	DN	D0	D	K	g	g1	b	f	f1	Z-Φd	DN'	D1	k1	g3	g2	b1	f'	f1'	Z1-Φd1	L	L1	H
A48Y-16C A44Y-16C A44Y-16P A44Y-16R	20	15	105	75	-	55	16	2	-	4-14	25	115	85	-	65	16	2	-	4-14	110	95	411
	25	16	115	85	-	65	16	2	-	4-14	32	140	100	-	78	18	2	-	4-18	110	95	411
	32	20	140	100	-	78	18	2	-	4-18	40	150	110	-	85	18	3	-	4-18	115	100	411
	40	25	150	110	-	85	18	3	-	4-18	50	165	125	-	100	20	3	-	4-18	120	110	472
	50	32	165	125	-	100	20	3	-	4-18	65	185	145	-	120	20	3	-	4-18	135	120	532
	65	40	185	145	-	120	20	3	-	4-18	80	200	160	-	135	20	3	-	8-18	160	140	556
	80	50	200	160	-	135	20	3	-	8-18	100	220	180	-	155	22	3	-	8-18	170	135	561
	100	65	220	180	-	155	22	3	-	8-18	125	250	210	-	185	22	3	-	8-18	195	175	667
	125	80	250	210	-	185	22	3	-	8-18	150	285	240	-	210	24	3	-	8-23	210	190	857
	150	100	285	240	-	210	24	3	-	8-23	175	310	270	-	240	26	3	-	8-23	255	230	915
	200	125	340	295	-	265	26	3	-	12-23	250	405	355	-	320	30	3	-	12-26	300	260	1073
	250	150	405	355	-	320	30	3	-	12-26	300	460	410	-	375	30	4	-	12-26	350	320	1307
	300	220	460	410	-	375	30	4	-	12-26	400	580	525	-	485	36	4	-	16-30	370	350	1233
	350	250	520	470	-	435	34	4	-	16-26	500	715	650	-	608	44	4	-	20-34	500	450	1711
	400	280	580	525	-	485	36	4	-	16-30	500	715	650	-	608	44	4	-	20-34	500	450	1780
A48Y-25 A44Y-25 A44Y-25P A44Y-25R	20	15	105	75	-	55	16	2	-	4-14	25	115	85	-	65	16	2	-	4-14	110	95	411
	25	16	115	85	-	65	16	2	-	4-14	32	140	100	-	78	18	2	-	4-18	110	95	411
	32	20	140	100	-	78	18	2	-	4-18	40	150	110	-	85	18	3	-	4-18	115	100	411
	40	25	150	110	-	85	18	3	-	4-18	50	165	125	-	100	20	3	-	4-18	120	110	472
	50	32	165	125	-	100	20	3	-	4-18	65	185	145	-	120	20	3	-	4-18	135	120	532
	65	40	185	145	-	120	22	3	-	8-18	80	200	160	-	135	20	3	-	8-18	160	140	556
	80	50	200	160	-	135	22	3	-	8-18	100	220	180	-	155	22	3	-	8-18	170	135	561
	100	65	230	190	-	160	24	3	-	8-23	125	250	210	-	185	22	3	-	8-18	195	175	667
	125	80	270	220	-	188	28	3	-	8-26	150	285	240	-	210	24	3	-	8-23	210	190	857
	150	100	300	250	-	218	30	3	-	8-26	175	310	270	-	240	26	3	-	8-23	255	230	915
	200	125	360	310	-	278	34	3	-	12-26	250	405	355	-	320	30	3	-	12-26	300	260	1073
	250	150	425	370	-	332	36	3	-	12-30	300	460	410	-	375	30	4	-	12-26	350	320	1307
	300	220	485	430	-	390	40	4	-	16-36	400	580	525	-	485	36	4	-	16-30	370	350	1233
	350	250	555	490	-	448	44	4	-	16-36	500	715	650	-	608	44	4	-	20-34	500	450	1711
	400	280	620	550	-	505	48	4	-	16-36	500	715	650	-	608	44	4	-	20-34	500	450	1780

* The content is for reference only. Please contact us for more information.

Model	DN	D0	D	K	g	g1	b	f	f1	Z-Φd	DN'	D1	k1	g3	g2	b1	f'	f1'	Z1-Φd1	L	L1	H
A48Y-40 A44Y-40 A44Y-40P A44Y-40R	20	15	105	75	51	55	16	2	4	4-14	25	115	85	-	65	16	16	-	4-14	100	95	411
	25	16	115	85	58	65	16	2	4	4-14	32	140	100	-	78	18	18	-	4-18	100	95	411
	32	20	140	100	66	78	18	2	4	4-18	40	150	110	-	85	18	18	-	4-18	115	100	411
	40	25	150	110	76	85	18	3	4	4-18	50	165	125	-	100	20	20	-	4-18	120	110	472
	50	32	165	125	88	100	20	3	4	4-18	65	185	145	-	120	20	20	-	4-18	135	120	532
	65	40	185	145	110	120	22	3	4	8-18	80	200	160	-	135	20	20	-	8-18	160	140	556
	80	50	200	160	121	135	22	3	4	8-18	100	220	180	-	155	22	22	-	8-18	170	135	561
	100	65	235	190	150	160	24	3	4.5	8-23	125	250	210	-	185	22	22	-	8-18	195	175	679
	125	80	270	220	176	188	28	3	4.5	8-26	150	285	240	-	210	24	24	-	8-23	210	190	857
	150	100	300	250	204	218	30	3	4.5	8-26	200	310	295	-	240	26	26	-	8-23	255	230	915
	200	125	375	320	260	282	38	3	4.5	12-30	250	405	355	-	320	30	30	-	12-26	300	260	1073
	250	150	450	385	313	345	42	3	4.5	12-34	300	460	410	-	375	30	30	-	12-26	350	320	1307
	300	220	515	450	364	408	46	4	4.5	16-34	400	580	525	-	485	36	36	-	16-30	370	350	1233
	350	250	580	510	422	465	52	4	5	16-36	500	715	650	-	608	44	44	-	20-34	500	450	1711
	400	280	660	585	474	535	58	4	5	16-41	500	715	650	-	608	44	44	-	20-34	500	450	1711
A48Y-64 A44Y-64 A44Y-64P A44Y-64R	20	10	125	90	51	68	22	2	4	4-18	25	115	85	58	65	16	16	4	4-14	96	85	297
	25	15	140	100	58	78	22	2	4	4-18	32	180	100	66	78	18	18	4	4-18	110	100	310
	32	20	155	110	66	82	24	2	4	4-23	40	150	110	76	85	18	18	4	4-18	130	110	322
	40	25	170	125	76	95	24	3	4	4-23	50	165	125	88	100	20	20	4	4-18	130	120	352
	50	32	180	135	88	105	26	3	4	4-23	65	185	145	110	120	22	22	4	8-18	135	130	425
	65	40	205	160	110	130	28	3	4	8-23	80	200	160	121	135	22	22	4	8-18	175	160	570
	80	50	215	170	121	140	30	3	4	8-23	100	235	190	150	160	24	24	4.5	8-23	175	160	560
	100	65	250	200	150	168	32	3	4.5	8-26	125	270	220	176	188	28	28	4.5	8-25	195	195	690
	150	100	345	280	204	240	38	3	4.5	8-34	200	375	320	260	282	38	38	4.5	12-30	280	265	935
A48Y-100 A44Y-100 A44Y-100P A44Y-100R	20	10	125	90	51	68	22	2	4	4-18	25	115	85	58	65	16	16	4	4-14	96	85	297
	25	16	140	100	58	78	24	2	4	4-18	32	140	100	66	78	18	18	4	4-18	110	100	310
	32	20	155	110	66	82	24	2	4	4-23	40	150	110	76	85	18	18	4	4-18	130	110	322
	40	25	170	125	76	95	26	3	4	4-23	50	165	125	88	100	20	20	4	4-18	130	120	352
	50	32	195	145	88	112	28	3	4	4-26	65	185	145	110	120	22	22	4	8-18	135	130	425
	65	32	220	170	110	138	32	3	4	8-26	80	200	160	121	135	22	22	4	8-18	175	160	570
	80	40	230	180	121	148	34	3	4	8-26	100	235	190	150	160	24	24	4.5	8-23	175	160	560
	100	50	265	210	150	172	38	3	4.5	8-30	125	270	220	176	188	28	28	4.5	8-25	195	195	690
	150	80	355	290	204	250	46	3	4.5	12-34	200	375	320	260	282	38	38	4.5	12-30	280	265	935

* The content is for reference only. Please contact us for more information.

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