A48C Type Pound-Grade Full Lift Spring Loaded Safety Valve

Model
A48C

A48C type pound-grade full lift spring loaded safety valve main property and specification

Normal Pressure	PN	150	300	600
Body strength	Ps (MPa)	3.0	7.5	15
Set pressure	Pk (MPa)	0.1~2	1.6~5	3.2~10
Seal pressure	Pm	90%Pk
Reseating pressure	Ph	≥90%Pk
Relieving pressure	Pp	≤1.1Pk
Lift	H (mm)	≥1/4 do
Appropriate temperature		≤350℃
Appropriate medium		Steam

A48C type pound-grade full lift spring loaded safety valve code of throat diameter

Code	Diameter	Code	Diameter
D	10	L	50
E	13	M	55
F	16	N	A48C150 A48C300 A48C600 60
G	20.5	P	72
H	26	Q	96
J	33	R	115
K	40	T	148

A48C type pound-grade full lift spring loaded safety valve main dimensionTop of page

No.	Name of part	A41H-C/KA41Y-C Materials	A41Y-P/KA41Y-P Materials	A41Y-R/KA41Y-R Materials
1	Body	WCB	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
2	Nozzle	ZG2Cr13/1Cr18Ni9Ti	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
3	Adjusting ring	ZG2Cr13/1Cr18Ni9Ti	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
4	Disc	2Cr13/1Cr18Ni9Ti	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
5	Guide sleeve	ZG2Cr13/1Cr18Ni9Ti	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
6	Bonnet	ZG230-450	ZG230-450	ZG230-450
7	Spring	50CrVA	Coated Teflon	Coated Teflon
8	Stem	2Cr13	2Cr13	1Cr18Ni12Mo2Ti
9	Adjusting bolt	45	2Cr13	2Cr13
10	Cap	ZG200-400	ZG200-400	ZG200-400
Sealing surface of material		D507	Depositing satellite

A48C300
Normal Diameter DN (in)	Dimension (mm)
	do	D	D1	D2	b	t	z-￠d	DN’	D’	D1’	D2’	b’	t’	z-￠d’	L	L1	H
12/’’ ×3/4’’	D	95	66.5	35	15	6	4-15	20	98	70	43	14	1.6	4-15	90	90	290
3/4’’ ×1’’	D	117	82.5	43	16	10	4-19	25	105	79.5	51	15	1.6	4-15	96	92	310
1’’ ×1 1/2’’	D	124	90	51	18	7	4-19	40	127	98.5	73	18	1.6	4-15	115	105	320
1’’ ×2’’	D	124	90	51	18	6	4-19	50	152	120.5	92	18	1.6	4-19	115	105	320
1 1/2’’ ×2’’	F	156	114.5	73	20	6	4-22	50	152	120.5	92	18	1.6	4-19	121	124	350
1 1/2’’ ×2 1/2’’	F	156	114.5	73	20	9	4-22	65	178	139.5	105	20	1.6	4-19	121	124	360
1 1/2’’ ×3’’	F	156	114.5	73	20	6	4-22	80	190	152.5	127	22	1.6	4-19	124	130	360
2’’ ×2 1/2’’	H	165	127	92	22	6	8-19	65	178	139.5	105	20	1.6	4-19	124	130	380
2’’ ×3’’	H	165	127	92	22	6	8-19	80	190	152.5	127	22	1.6	4-19	124	130	380
2 1/2’’ ×4’’	J	190	149.5	105	24	7	8-22	100	229	190.5	157	24	1.6	8-19	143	137	380
3’’ ×4’’	L	210	168	127	28	10	8-22	100	229	190.5	157	24	1.6	8-19	162	156	480
4’’ ×6’’	N	254	200	157	32	12	8-22	150	279	241.5	216	26	1.6	8-22	229	181	540
6’’ ×8’’	P	318	270	216	38	10	12-22	200	343	298.5	270	29	1.6	8-22	241	240	760
8’’ ×10’’	R	381	330	270	42	10	12-25	250	406	362	324	31	1.6	12-25	279	276	830

Remark: 150Lb for outlet flange

A48C600
Normal Diameter DN (in)	Dimension (mm)
	do	D	D1	D2	b	t	z-￠d	DN’	D’	D1’	D2’	b’	t’	z-￠d’	L	L1	H
3/4’’×1’’	D	117	82.5	43	16	10	4-19	25	108	79.5	51	15	1.6	4-15	96	92	310
1’’ ×2’’	D	124	90	51	19	6	4-19	50	152	120.5	92	18	1.6	4-19	115	105	320
1 1/2’’ ×2’’	F	156	114.5	73	22	10	4-22	50	152	120.5	92	18	1.6	4-19	152	124	360
1 1/2’’ ×2 1/2’’	F	156	114.5	73	22	9	4-22	65	178	139.5	105	20	1.6	4-19	152	214	380
1 1/2’’ ×3’’	F	156	114.5	73	22	6	4-22	80	190	152.5	127	22	1.6	4-19	152	124	380
2’’ ×2 1/2’’	H	165	127	92	26	6	8-19	65	178	139.5	105	20	1.6	4-19	162	154	410
2’’ ×3’’	H	165	127	92	26	6	8-19	80	190	152.5	127	22	1.6	4-19	162	154	410
2 1/2’’ ×4’’	K	190	149.5	105	29	7	8-22	100	229	190.5	157	24	1.6	8-19	143	165	410
3’’ ×4’’	K	210	168	127	32	10	8-22	100	229	190.5	157	24	1.6	8-19	162	155	480
4’’ ×6’’	N	273	215.9	157	38	12	8-25	150	279	241.5	216	26	1.6	8-22	210	200	540
6’’ ×8’’	P	292	292	216	46	10	12-28	200	343	298.5	270	29	1.6	8-22	241	240	760

Remark: 150Lb for outlet flange

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