ANSI Standard Spring Loaded Safety Valve, Class 150 / 300 / 600 / 900 / 1500 lb

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ANSI Standard Spring Loaded Safety Valve, Class 150 / 300 / 600 / 900 / 1500 lb

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Main property and specification

Normal Pressure	PN	150	300	600	900	1500
Body strength	Ps (MPa)	3.0	7.5	15	22.5	38
Set pressure	Pk (MPa)	0.1~2	1.6~5	3.2~10	8~15	10~25
Seal pressure	Pm	90%Pk
Reseating pressure	Ph	≥90%Pk
Relieving pressure	Pp	≤1.1Pk
Lift	H (mm)	≥1/20 do
Appropriate temperature		C	≤300℃
Appropriate temperature		P、R	≤200℃
Appropriate medium		Air, Oil, Steam, Water, Corrosive medium

Code of throat diameter

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

Main Dimension

A41C150, A41C150P, A41C150R
Normal Diameter DN (in)	Dimension (mm)
Normal Diameter DN (in)	do	D	D1	D2	b	t	z-￠d	DN’	D’	D1’	D2’	t’	b’	z-￠d’	L	L1	H
1/2”×1/2”	D	89	60.5	35	12	6	4-15	15	89	60.5	35	1.6	12	4-15	90	90	260
3/4”×1”	D	98	70	43	14	6	4-15	25	108	79.5	51	1.6	15	4-15	96	92	280
1”×1”	D	108	79.5	51	15	9	4-15	25	108	79.5	51	1.6	15	4-15	100	100	290
1”×2”	E	108	79.5	51	15	9	4-15	50	152	120.5	92	1.6	18	4-19	114	105	290
1 1/2”×1 1/2”	G	127	98.5	73	18	10	4-15	40	127	98.5	73	1.6	18	4-15	110	115	330
1 1/2”×2”	G	127	98.5	73	18	10	4-15	50	152	120.5	98	1.6	18	4-19	110	115	330
2“”×3”	J	152	120.5	92	18	10	4-19	80	190	152.5	127	1.6	22	4-19	124	130	350

A41C Type Pound-grade low lift spring loaded safety valve

A41C300, A41C300P, A41C300R
Normal Diameter DN (in)	Dimension (mm)
Normal Diameter DN (in)	do	D	D1	D2	b	t	z-￠d	DN’	D’	D1’	D2’	t’	b’	z-￠d’	L	L1	H
1/2’’×1/2’’	D	95	66.5	35	15	6	4-15	15	89	60.5	35	1.6	12	4-15	90	90	260
3/4’’×1’’	D	117	85.5	43	16	10	4-19	25	108	79.5	51	1.6	15	4-15	96	92	280
1’’×1’’	D	124	90	51	18	6	4-19	25	108	79.5	51	1.6	15	4-15	100	100	290
1’’×2’’	E	124	90	51	18	6	4-19	50	152	120.5	92	1.6	18	4-19	114	105	290
1 1/2’’×1 1/2’’	G	156	114.5	73	20	9	4-22	40	127	98.5	73	1.6	18	4-15	110	115	330
1 1/2’’×2’’	G	156	114.5	73	20	9	4-22	50	152	120.5	92	1.6	18	4-19	110	115	330
2’’×3“	J	165	127	92	22	8	8-19	80	190	152.5	127	1.6	22	4-19	124	130	350

Remark: 150Lb for outlet flange

A41C600, A41C600P, A41C600R
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	6	4-15	25	108	79.5	51	15	1.6	4-15	105	110	280
1’’ ×2’’	D	124	90	51	20	9	4-19	50	152	120.5	92	18	1.6	4-19	115	105	290
1 1/2’’ ×1 1/2’’	F	156	114.5	73	22	10	4-22	40	127	98.5	73	18	1.6	4-15	147	165	330
1 1/2’’ ×2’’	F	156	114.5	73	22	10	4-22	50	152	120.5	92	18	1.6	4-19	147	165	350

Remark: 150Lb for outlet flange

A41C600, A41C600P, A41C600R
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’’ ×1 1/2’’	D	150	101.6	51	28	15	4-25	40	156	114.5	73	20	1.6	4-22	125	125	320
1 1/2’’ ×1 1/2’’	F	178	124	73	32	14	4-28	40	156	114.5	73	20	1.6	4-22	150	194	350
1 1/2’’ ×2’’	F	178	124	73	32	15	4-28	50	165	127	92	22	1.6	8-19	140	105	350

Remark: 300Lb for outlet flange

WA41C Type Pound-grade balance bellows spring-loaded safety valve

Main property and specification

Normal Pressure	PN	150	300	1500
Body strength	Ps (MPa)	3.0	7.5	37.5
Set pressure	Pk (MPa)	0.1~2	1.6~5	10~25
Seal pressure	Pm	90%Pk
Reseating pressure	Ph	≥90%Pk
Relieving pressure	Pp	≤1.1Pk
Lift	H (mm)	≥1/20 do
Appropriate temperature		C	≤300℃
Appropriate temperature		P、R	≤200℃
Appropriate medium		C	Gas, liquid
Appropriate medium		P、R	Nitric Acid, Acetic Acid, Gas, Liquid

Code of throat diameter

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

Main Dimension

WA41C150, A41C150P, WA41C150R
Normal Diameter DN (in)	Dimension (mm)
Normal Diameter DN (in)	do	D	D1	D2	b	t	z-￠d	DN’	D’	D1’	D2’	t’	b’	z-￠d’	L	L1	H
1/2’’×1/2’’	D	89	60.5	35	12	6	4-15	15	89	60.5	35	1.6	12	4-15	90	90	320
3/4’’×1’’	D	98	70	43	14	6	4-15	25	108	79.5	51	1.6	15	4-15	96	92	330
1’’×1’’	D	108	79.5	51	15	9	4-15	25	108	79.5	51	1.6	15	4-15	100	100	350
1’’×2’’	E	108	79.5	51	15	9	4-15	50	152	120.5	92	1.6	18	4-19	114	105	350
1 1/2’’×1 1/2’’	G	127	98.5	73	18	10	4-15	40	127	98.5	73	1.6	18	4-15	110	115	370
1 1/2’’×2’’	G	127	98.5	73	18	10	4-15	50	152	120.5	92	1.6	18	4-19	110	115	370
2’’×3“	J	152	120.5	92	18	10	4-19	80	190	152.5	127	1.6	22	4-19	124	130	390

WA41C300, A41C300P, WA41C300R
Normal Diameter DN (in)	Dimension (mm)
Normal Diameter DN (in)	do	D	D1	D2	B	T	z-￠d	DN’	D’	D1’	D2’	T’	B’	z-￠d’	L	L1	H
1/2’’×1/2’’	D	95	66.5	35	15	6	4-15	15	15	89	60.5	1.6	12	4-15	90	90	320
3/4’’×1’’	D	117	85.5	43	16	10	4-19	25	25	108	79.5	1.6	15	4-15	96	92	330
1’’×1’’	D	124	90	51	18	6	4-19	25	25	108	79.5	1.6	15	4-15	100	100	350
1’’×2’’	E	124	90	51	18	6	4-19	50	50	154	120.5	1.6	18	4-19	114	105	350
1 1/2’’×1 1/2’’	G	156	114.5	73	20	9	4-22	40	40	127	98.5	1.6	18	4-15	110	115	370
1 1/2’’×2’’	G	156	114.5	73	20	9	4-22	50	50	152	120.5	1.6	18	4-19	110	115	370
2’’×3“	J	165	127	92	22	8	8-19	80	80	190	152.5	1.6	22	4-19	124	130	390

Remark: 150Lb for outlet flange

WA41C1500
Normal Demeter DN (in)	Dimension (mm)
Normal Demeter DN (in)	Do	D	D1	D2	b	t	z-￠d	DN’	D’	D1’	D2’	b’	t’	z-￠d’	L	L1	H
1’’×1’’	D	150	101.6	51	29	10	4-25	25	125	90	51	1.6	18	4-19	125	125	360

A42CType Pound-grade low lift spring loaded safety valve

Main property and specification

Normal Pressure	PN	150	300	600	900	1500
Body strength	Ps (MPa)	3.0	7.5	15	22.5	38
Set pressure	Pk (MPa)	0.1~2	1.6~5	3.2~10	8~15	10~25
Seal pressure	Pm	90%Pk
Reseating pressure	Ph	≥90%Pk
Relieving pressure	Pp	≤1.1Pk
Lift	H (mm)	≥1/4 do
Appropriate temperature		C	≤300℃
Appropriate temperature		P、R	≤200℃
Appropriate medium		Water, Oil, Air, Steam, Corrosive medium

Code of throat diameter

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

Main Dimension

A42C150, A42C150P, A42C150R
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	260
3/4’’ ×1’’	D	98	70	43	14	10	4-15	25	108	79.5	51	15	1.6	4-15	96	92	280
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	290
1’’ ×2’’	D	108	79.5	51	15	7	4-15	50	152	120.5	92	18	1.6	4-19	115	105	290
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	320
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	340
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	340
2’’ ×2 1/2’’	J	152	120.5	92	18	6	4-19	65	178	139.5	105	20	1.6	4-19	124	130	360
2’’ ×3’’	J	152	120.5	92	18	6	4-19	80	190	152.5	127	22	1.6	4-19	124	130	360
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	360
3’’ ×4’’	L	190	152.5	127	22	10	4-19	100	229	190.5	157	24	1.6	8-19	162	156	450
4’’ ×6’’	N	229	190.5	157	24	12	8-19	150	279	241.5	216	26	1.6	8-22	229	181	510
6’’ ×8’’	P	279	241.5	216	26	10	8-22	200	343	298.5	270	29	1.6	8-22	241	240	740
8’’ ×10’’	R	343	298.5	270	29	10	8-22	250	406	362	324	31	1.6	12-25	279	276	810
12’’ ×14’’	T	483	432	381	32	10	12-25	350	533	476	413	35	1.6	12-28	370	360	860

A42C Type Pound-grade full lift spring loaded safety valve

A42C300, HA42C300P, A42C300R
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	95	66.5	35	15	6	4-15	20	98	70	43	14	1.6	4-15	90	90	260
3/4’’ ×1’’	D	117	82.5	43	16	10	4-19	25	108	79.5	51	15	1.6	4-15	96	92	280
1’’ ×1 1/2’’	D	124	90	51	18	7	4-19	40	127	98.5	73	18	1.6	4-15	115	105	290
1’’ ×2’’	D	124	90	51	18	6	4-19	50	152	120.5	92	18	1.6	4-19	115	105	290
1 1/2’’ ×2’’	G	156	114.5	73	20	6	4-22	50	152	120.5	92	18	1.6	4-19	121	124	320
1 1/2’’ ×2 1/2’’	G	156	114.5	73	20	9	4-22	65	178	139.5	105	20	1.6	4-19	121	124	340
1 1/2’’ ×3’’	G	156	114.5	73	20	6	4-22	80	190	152.5	127	22	1.6	4-19	124	130	340
2’’ ×2 1/2’’	H	165	127	92	22	6	8-19	65	178	139.5	105	20	1.6	4-19	124	130	360
2’’ ×3’’	J	165	127	92	22	6	8-19	80	190	152.5	127	22	1.6	4-19	124	130	360
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	360
3’’ ×4’’	L	210	168	127	28	10	8-22	100	229	190.5	157	24	1.6	8-19	162	156	450
4’’ ×6’’	N	254	200	157	32	12	8-22	150	279	241.5	216	26	1.6	8-22	229	181	510
6’’ ×8’’	P	318	270	216	38	10	12-22	200	343	298.5	270	29	1.6	8-22	241	240	740
8’’ ×10’’	R	381	330	270	42	10	12-25	250	406	362	324	31	1.6	12-25	279	276	810

Remark: 150Lb for outlet flange

A42C600, A42C600P, A42C600R
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	290
1’’ ×2’’	D	124	90	51	19	6	4-19	50	152	120.5	92	18	1.6	4-19	115	105	290
1 1/2’ ×2’’	D	156	114.5	73	22	10	4-22	50	152	120.5	92	18	1.6	4-19	152	124	340
1 1/2’’ ×2 1/2’’	D	156	114.5	73	22	11	4-22	65	178	139.5	105	20	1.6	4-19	152	124	350
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	350
2’’ ×2 1/2’’	F	165	127	92	26	6	8-19	65	178	139.5	105	20	1.6	4-19	162	154	380
2’’ ×3’’	F	165	127	92	26	6	8-19	80	190	152.5	127	22	1.6	4-19	162	154	380
2 1/2’’ ×4’’	H	190	149.5	105	29	7	8-22	100	229	190.5	157	24	1.6	8-19	143	165	380
3’’ ×4’’	L	210	168	127	32	10	8-22	100	229	190.5	157	24	1.6	8-19	162	155	460
4’’ ×6’’	N	273	215.9	157	38	12	8-25	150	279	241.5	216	26	1.6	8-22	210	200	520
6’’ ×8’’	P	356	292	216	46	10	12-28	200	343	298.5	270	29	1.6	8-22	241	240	750

Remark: 150Lb for outlet flange

WA42C900, A42C900P, A42C900R
Normal Demeter DN (in)	Dimension (mm)
Normal Demeter DN (in)	do	D	D1	D2	b	t	z-￠d	DN’	D’	D1’	D2’	b’	t’	z-￠d’	L	L1	H
1 1/2’’ ×2’’	F	178	124	73	32	10	4-28	50	152	120.5	92	18	1.6	4-19	115	124	360
2’’ ×3’’	H	216	165.1	92	38	10	8-25	80	190	152.5	127	22	1.6	4-19	162	154	390
3’’ ×4’’	J	241	190.5	127	38	10	8-25	100	229	190.5	157	24	1.6	8-19	181	184	480
4’’ ×6’’	K	292	235	150	44	12	8-32	150	279	241.5	216	26	1.6	8-22	222	197	540

Remark: 150Lb for outlet flange

WA42C1500, A42C1500P, A42C1500R
Normal Demeter DN (in)	Dimension (mm)
Normal Demeter 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	130	89	43	20	10	4-22	25	124	90	51	18	1.6	4-19	120	136	310
1 1/2’’ ×2’’	D	178	124	73	26	12	4-28	50	165	127	95	22	1.6	8-29	140	105	360
1 1/2’’ ×2 1/2’’	F	178	124	73	26	12	4-28	65	190	149.5	105	24	1.6	8-22	152	124	360
2’’ ×3’’	G	216	165	92	32	15	8-25	80	210	168	127	28	1.6	8-22	162	154	380
3’’ ×4’’	J	267	206.2	127	42	14	8-32	100	254	200	157	32	1.6	8-22	181	184	490

Remark: 300Lb for outlet flange

WA42C Type Pound-grade balance bellows spring-loaded safety valve

Main property and specification

Normal Pressure	PN	150	300	600	1500
Body strength	Ps (MPa)	3.0	7.5	15	37.5
Set pressure	Pk (MPa)	0.1~2	1.6~5	3.2~10	10~25
Seal pressure	Pm	90%Pk
Reseating pressure	Ph	≥90%Pk
Relieving pressure	Pp	≤1.1Pk
Lift	H (mm)	≥1/4 do
Appropriate temperature		C	≤300℃
Appropriate temperature		P、R	≤200℃
Appropriate medium		C	Gas, liquid
Appropriate medium		P、R	Nitric Acid, Acetic Acid, Gas, Liquid

Code of throat diameter

Code	Diameter	Code	Diameter
D	10	L	50
E	13	M	55
F	16	N	60
G	2035	P	72
H	26	Q	96
J	33	R	115
K	40	T	148

Main Dimension

A42C150, A42C150P, A42C150R
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	89	60.5	35	12	6	4-15	20	98	70	43	14	1.6	4-15	90	90	320
3/4’’ ×1’’	D	98	70	43	14	8	4-15	25	108	79.5	51	15	1.6	4-15	96	92	330
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	340
1’’ ×2’’	D	108	79.5	51	15	7	4-15	50	152	120.5	92	18	1.6	4-19	115	105	340
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	360
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	380
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	380
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	390
2’’ ×3’’	J	152	120.5	92	18	6	4-19	80	190	152.5	127	22	1.6	4-19	124	130	390
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	390
3’’ ×4’’	L	190	152.5	127	22	10	4-19	100	229	190.5	157	24	1.6	8-19	162	156	460
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	780
8’’ ×10’’	R	343	298.5	270	29	10	8-22	250	406	362	324	31	1.6	12-25	279	276	820
12’’ ×14’’	T	483	432	381	32	12	12-25	350	533	476	416	35	1.6	12-28	370	360	890

WA42C Type Pound-grade balance bellows spring-loaded safety valve

A42C300, A42C300P, A42C300R
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	320
3/4’’ ×1’’	D	117	82.5	43	16	10	4-19	25	108	79.5	51	15	1.6	4-15	96	92	330
1’’ ×1 1/2’’	D	124	90	51	18	7	4-19	40	127	98.5	73	18	1.6	4-15	115	105	340
1’’ ×2’’	D	124	90	51	18	6	4-19	50	152	120.5	92	18	1.6	4-19	115	105	340
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	360
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	380
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	380
2’’ ×2 1/2’’	H	165	127	92	22	6	8-19	65	178	139.5	105	20	1.6	4-19	124	130	390
2’’ ×3’’	H	165	127	92	22	6	8-19	80	190	152.5	127	22	1.6	4-19	124	130	390
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	390
3’’ ×4’’	L	210	168	127	28	10	8-22	100	229	190.5	157	24	1.6	8-19	162	156	460
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	8	10	12-22	200	343	298.5	324	29	1.6	8-22	241	240	780
8’’ ×10’’	R	381	330	270	42	10	12-25	250	406	362	324	31	1.6	12-25	279	276	820
10’’ ×12’’	T	445	387.5	324	46	10	16-28	350	533	476	413	35	1.6	12-28	350	330	890

Remark: 150Lb for outlet flange

A42C600, A42C600P, A42C600R
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	330
1’’ ×2’’	D	124	90	51	19	6	4-19	50	152	120.5	92	18	1.6	4-19	115	105	340
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	124	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	390
2’’ ×3’’	H	165	127	92	26	6	8-19	80	190	152.5	127	22	1.6	4-19	162	154	390
2 1/2’’ ×4’’	K	190	149.5	105	26	7	8-22	100	229	190.5	157	247	1.6	8-19	143	165	390
3’’ ×4’’	K	210	168	127	29	10	8-22	100	229	190.5	157	24	1.6	8-19	162	155	460
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	356	292	216	46	10	12-28	200	343	298.8	270	29	1.6	8-22	241	240	780

Remark: 150Lb for outlet flange

A44C 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		C	≤300℃
Appropriate temperature		P、R	≤200℃
Appropriate medium		C	Gas, liquid
Appropriate medium		P、R	Neodymium

Code of throat diameter

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

Main Dimension

A44C150
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	89	60.5	35	12	18	4-15	20	98	70	43	14	1.6	4-15	90	90	260
3/4’’ ×1’’	D	98	70	43	14	24	4-15	25	108	79.5	51	15	1.6	4-15	96	92	260
1’’ ×1 1/2’’	D	108	79.5	51	15	22	4-15	40	127	98.5	73	18	1.6	4-15	115	105	280
1’’ ×2’’	D	108	79.5	51	15	22	4-15	50	152	120.5	92	18	1.6	4-19	115	105	280
1 1/2’’ ×2’’	G	127	98.5	73	18	24	4-15	50	152	120.5	92	18	1.6	4-19	121	124	310
1 1/2’’ ×2 1/2’’	G	127	98.5	73	18	24	4-15	65	178	139.5	105	20	1.6	4-19	121	124	310
1 1/2’’ ×3’’	G	127	98.5	73	18	24	4-15	80	190	152.5	127	22	1.6	4-19	124	130	310
2’’ ×2 1/2’’	H	152	120.5	92	18	24	4-19	65	178	139.5	105	20	1.6	4-19	124	130	350
2’’ ×3’’	J	152	120.5	92	18	24	4-19	80	190	152.5	127	22	1.6	4-19	124	130	350
2 1/2’’ ×4’’	J	178	139.5	105	20	27	4-19	100	229	190.5	157	24	1.6	8-19	143	137	430
3’’ ×4’’	L	190	152.5	127	22	32	4-19	100	229	190.5	157	24	1.6	8-19	162	156	490
4’’ ×6’’	N	229	190.5	157	24	36	8-19	150	279	241.5	216	26	1.6	8-22	229	181	610
6’’ ×8’’	P	279	241.5	216	26	36	8-22	200	343	298.5	270	29	1.6	8-22	241	240	840
8’’ ×10’’	R	343	298.5	270	29	39	8-22	250	406	362	324	31	1.6	12-25	279	276	990
12’’ ×14’’	T	483	432	381	32	42	12-25	350	533	473	413	35	1.6	12-28	370	360	1040

A44C Type Pound-grade full lift spring loaded safety valve

A44C300, A44C300R
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	260
3/4’’ ×1’’	D	117	82.5	43	16	10	4-19	25	108	79.5	51	15	1.6	4-15	96	92	260
1’’ ×1 1/2’’	D	124	90	51	18	7	4-19	40	127	98.5	73	18	1.6	4-15	115	105	280
1’’ ×2’’	D	124	90	51	18	6	4-19	50	152	120.5	92	18	1.6	4-19	115	105	280
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	310
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	310
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	310
2’’ ×2 1/2’’	H	165	127	92	22	6	8-19	65	178	139.5	105	20	1.6	4-19	124	130	350
2’’ ×3’’	H	165	127	92	22	6	8-19	80	190	152.5	127	22	1.6	4-19	124	130	350
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	430
3’’ ×4’’	L	210	168	127	28	10	8-22	100	229	190.5	157	24	1.6	8-19	162	156	490
4’’ ×6’’	N	254	200	157	32	12	8-22	150	279	241.5	216	26	1.6	8-22	229	181	610
6’’ ×8’’	P	318	270	216	38	10	12-22	200	343	298.5	270	29	1.6	8-22	241	240	840
8’’ ×10’’	R	381	330	270	42	10	12-25	250	406	362	324	31	1.6	12-25	279	276	990
10’’ ×12’’	T	445	387.5	324	46	10	16-28	350	533	476	413	35	1.6	12-28	350	330	1040

Remark: 150Lb for outlet flange

A44C600
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	280
1’’ ×2’’	D	124	90	51	19	6	4-19	50	152	120.5	92	18	1.6	4-19	115	105	300
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	300
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	330
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	330
2’’ ×2 1/2’’	H	165	127	92	26	6	8-19	65	178	139.5	105	20	1.6	4-19	162	154	330
2’’ ×3’’	H	165	127	92	26	6	8-19	80	190	152.5	127	22	1.6	4-19	162	154	360
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	360
3’’ ×4’’	K	210	168	127	32	10	8-22	100	229	190.5	157	24	1.6	8-19	162	155	440
4’’ ×6’’	N	273	215.9	157	38	12	8-25	150	279	241.5	216	26	1.6	8-22	210	200	610
6’’ ×8’’	P	356	292	216	46	10	12-28	200	343	298.5	270	29	1.6	8-22	241	240	625

Remark: 150Lb for outlet flange

WA44C Type Pound-grade balance bellows spring-loaded safety valve

Main property and specification

Normal Pressure	PN	150	300		600	900
Body strength	Ps (MPa)	3.0	7.5		15	22.5
Set pressure	Pk (MPa)	0.1~2	1.6~5		3.2~10	8~15
Seal pressure	Pm	90%Pk
Reseating pressure	Ph	≥90%Pk
Relieving pressure	Pp	≤1.1Pk
Lift	H (mm)	≥1/4 do
Appropriate temperature		C		≤300℃
		P、R		≤200℃
Appropriate medium		C		Gas, liquid
		P、R		Nitric Acid, Acetic Acid, Gas Liquid

Code of throat diameter

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

Main Dimension

WA44C150, WA44C150P, WA44C150R
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	340
3/4’’ ×1’’	D	98	70	43	14	6	4-15	25	108	79.5	51	15	1.6	4-15	96	92	350
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	360
1’’ ×2’’	D	108	79.5	51	15	7	4-15	50	152	120.5	92	18	1.6	4-19	115	105	360
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	380
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	390
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	390
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	410
2’’ ×3’’	J	152	120.5	92	18	6	4-19	80	190	152.5	127	22	1.6	4-19	124	130	410
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	410
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	560
6’’ ×8’’	P	279	241.5	216	26	10	8-22	200	343	298.5	270	29	1.6	8-22	241	240	790
8’’ ×10’’	R	343	298.5	270	29	10	8-22	250	406	362	324	31	1.6	12-25	279	276	840
12’’ ×14’’	T	483	432	381	32	10	12-25	350	533	476	413	35	1.6	12-28	370	360	920

WA44C Type Pound-grade balance bellows spring-loaded safety valve

WA44C300, WA44C300P, WA44C300R
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	340
3/4’’ ×1’’	D	117	82.5	43	16	10	4-19	25	105	79.5	51	15	1.6	4-15	96	92	350
1’’ ×1 1/2’’	D	124	90	51	18	7	4-19	40	127	98.5	73	18	1.6	4-15	115	105	360
1’’ ×2’’	D	124	90	51	18	6	4-19	50	152	120.5	92	18	1.6	4-19	115	105	360
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	380
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	390
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	390
2’’ ×2 1/2’’	H	165	127	92	22	6	8-19	65	178	139.5	105	20	1.6	4-19	124	130	410
2’’ ×3’’	H	165	127	92	22	6	8-19	80	190	152.5	127	22	1.6	4-19	124	130	410
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	420
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	560
6’’ ×8’’	P	318	270	216	38	10	12-22	200	343	298.5	270	29	1.6	8-22	241	240	790
8’’ ×10’’	R	381	330	270	42	10	12-25	250	406	362	324	31	1.6	12-25	279	276	840

Remark: 150Lb for outlet flange

WA44C600, WA44C600P, WA44C600R
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	360
1’’ ×2’’	D	124	90	51	19	6	4-19	50	152	120.5	92	18	1.6	4-19	115	105	370
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	370
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	390
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	400
2’’ ×2 1/2’’	H	165	127	92	26	6	8-19	65	178	139.5	105	20	1.6	4-19	162	154	400
2’’ ×3’’	H	165	127	92	26	6	8-19	80	190	152.5	127	22	1.6	4-19	162	154	420
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	420
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	560
6’’ ×8’’	P	356	292	216	46	10	12-28	200	343	298.5	270	29	1.6	8-22	241	240	790

Remark: 150Lb for outlet flange

WA44C900
Normal Demeter DN (in)	Dimension (mm)
Normal Demeter DN (in)	do	D	D1	D2	b	t	z-￠d	DN’	D’	D1’	D2’	b’	t’	z-￠d’	L	L1	H
1 1/2’’ ×2’’	F	178	124	73	32	10	4-28	50	152	120.5	92	18	1.6	4-19	115	124	380
2’’ ×3’’	H	216	165.1	92	38	10	8-25	80	190	152.5	127	22	1.6	4-19	162	154	420
3’’ ×4’’	J	241

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