4123 Spring Loaded Full Lift Type With Lever Safety Relief Valve

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.

Certification

BasCo offers a full range of safety valve products, having obtained certifications such as TS, EAC, and type testing qualifications. It provides safe and reliable customized solutions and products tailored to users' actual working conditions.

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

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

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