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Safety Relief Valve, Opened

Technical Data

Safety Relief Valves, Opened

Pressure	Class	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	90Pk
Reseating pressure	Ph	=90Pk
Relieving pressure	Pp	=1.1Pk
Lift	H (mm)	=1/4 do
Appropriate temperature		=350°C
Appropriate medium		Steam

Dimensions (mm)

A48C150
Normal Diameter DN (in)	Dimension (mm)
Normal Diameter DN (in)	do	D	D1	D2	b	t	z-¢d	DN'	D'	D1'	D2'	b'	t'	z-¢d'	L	L1	H
1/2''×3/4''	D	89	60.5	35	12	6	4-15	20	98	70	43	14	1.6	4-15	90	90	290
3/4'' ×1''	D	98	70	43	14	6	4-15	25	108	79.5	51	15	1.6	4-15	96	92	310
1'' ×1 1/2''	D	108	79.5	51	15	7	4-15	40	127	98.5	73	18	1.6	4-15	115	105	320
1'' ×2''	D	108	79.5	51	15	7	4-15	50	152	120.5	92	18	1.6	4-19	115	105	320
1 1/2'' ×2''	G	127	98.5	73	18	6	4-15	50	152	120.5	92	18	1.6	4-19	121	124	350
1 1/2'' ×2 1/2''	G	127	98.5	73	18	6	4-15	65	178	139.5	105	20	1.6	4-19	121	124	360
1 1/2'' ×3''	G	127	98.5	73	18	6	4-15	80	190	152.5	127	22	1.6	4-19	124	130	360
2'' ×2 1/2''	H	152	120.5	92	18	6	4-19	65	178	139.5	105	20	1.6	4-19	124	130	380
2'' ×3''	J	152	120.5	92	18	6	4-19	80	190	152.5	127	22	1.6	4-19	124	130	380
2 1/2'' ×4''	J	178	139.5	105	20	7	4-19	100	229	190.5	157	24	1.6	8-19	143	137	380
3'' ×4''	L	190	152.5	127	22	10	4-19	100	229	190.5	157	24	1.6	8-19	162	156	480
4'' ×6''	N	229	190.5	157	24	12	8-19	150	279	241.5	216	26	1.6	8-22	229	181	540
6'' ×8''	P	279	241.5	216	26	10	8-22	200	343	298.5	270	29	1.6	8-22	241	240	760
8'' ×10''	R	343	298.5	270	29	10	8-22	250	406	362	324	31	1.6	12-25	279	276	830
12'' ×14''	T	483	432	381	32	10	12-25	350	533	476	413	35	1.6	12-28	370	360	890

A48C300
Normal Diameter DN (in)	Dimension (mm)
Normal Diameter DN (in)	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

A48C600
Normal Diameter DN (in)	Dimension (mm)
Normal Diameter DN (in)	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

Supplier: Saitai Valve, China
Manufacturer: Shop in Shanghai Qingpu Industrial Park

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