Wenzhou Starry Valve Co., Ltd. is one of the most reliable manufacturers and suppliers of liquid safety valve in China. We are committed to providing high quality customized valves with low price. If you're going to buy bulk durable liquid safety valve, welcome to get quotation from our factory.
| Size Range | 3/4" ~ 16" |
| Pressure Rating | Class150 ~ Class1500 |
| Temperature Range | Carbon Steel: -29℃~300℃; Stainless Steel: -40℃~200℃ |
| Connection Type | Flanged (ASME B16.5) |
| Material | Carbon Steel / Stainless Steel |
| Operation | Spring-Loaded, Closed Bonnet, Low Lift, No Wrench |
| Suitable Medium | Water, Oil, Air, Natural Gas and other liquid & low-flow gas media; Stainless Steel for Weakly Corrosive Media; Closed Structure for Toxic/Flammable Media requiring sealed discharge |
Features
Closed-bonnet low-lift spring-loaded structure
Closed bonnet design, outlet can connect to discharge pipeline for centralized medium discharge. Low-lift structure, disc opening height 1/40～1/20 of nozzle diameter, gentle pressure relief and low water-hammer impact.
01
Without lifting wrench
Compact structure without manual lifting wrench, for conditions without on-site manual test requirement.
02
Hard-alloy overlay sealing surface
Seat and disc overlaid with hard alloy, anti-erosion, reliable sealing and good re-seat performance.
03
ANSI / API standard pound-grade design
Flange conforms to ASME B16.5, pressure class Class150-1500.
04
Working parameters
- A41C (WCB carbon steel):-29℃ ~ 300℃, for water, air, oil and non-corrosive medium
- A41P (SS304): ≤200℃, for corrosive medium - DN25-DN200
05
Typical Application Equipment
- Petrochemical liquid-phase pressure vessels and process pipelines
- Water, oil, air and inert-gas pressure systems
- Non-corrosive medium over-pressure protection equipment
- Energy-industry liquid-phase pressure-bearing pipelines
- Chemical plant equipment with stable back-pressure
Liquid safety valve applies for liquid and small-capacity gas systems. Carbon steel version for-29℃ ~ 300℃; stainless-steel version for corrosive media up to 200℃. When system pressure exceeds set value, the valve opens to discharge medium. When pressure drops back to allowable value, Liquid safety valve closes automatically to protect equipment and pipelines. Not suitable for conditions with sharply fluctuating back-pressure.
Main Property and Specifiecation
|
Normal Pressure |
PN |
150 |
300 |
600 |
900 |
1500 |
|
Body strangth |
Ps(MPa) |
3 |
7.5 |
15 |
22.5 |
37.5 |
|
Set pressure |
Pk(MPa) |
0.1-2 |
1.6-5 |
3.2-10 |
8-15 |
10-25 |
|
Seal pressure |
Pm(MPa) |
90%Pk |
||||
|
Reseation pressure |
Ph(MPa) |
≥80%Pk |
||||
|
Relieving pressure |
Pp(MPa) |
≤1.2Pk |
||||
|
Llift |
H(mm) |
≥1/20d0 |
||||
|
Appropriate temperature |
C |
≤300℃ |
||||
|
P,R |
≤200℃ |
|||||
|
Appropriate medium |
Air,oil,Steam,Water,Corrosive medium |
|||||
Code Of Throat Diameter
|
Code |
Diameter |
Code |
Diameter |
|
D |
10 |
L |
20 |
|
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 |
Liquid Safety Valve Main Dimension
|
A41C150,A41C150P,A41C150R |
|||||||||||||||||
|
Nominal |
Dimension(mm) |
||||||||||||||||
|
do |
D |
D1 |
D2 |
b |
t |
Z-φd |
DN' |
D |
D1' |
D2 |
b' |
t' |
Z-φd' |
L |
L1 |
H |
|
|
1/2"×1/2" |
D |
89 |
60.5 |
35 |
12 |
5 |
4-15 |
15 |
89 |
60.5 |
35 |
1.6 |
12 |
4-15 |
90 |
90 |
260 |
|
3/4"×1" |
D |
98 |
70 |
43 |
14 |
5 |
4-15 |
25 |
108 |
79.5 |
51 |
1.6 |
15 |
4-15 |
96 |
92 |
280 |
|
1"×1" |
D |
108 |
79.5 |
51 |
15 |
5 |
4-15 |
25 |
108 |
79.5 |
51 |
1.6 |
15 |
4-15 |
100 |
100 |
290 |
|
1"×2" |
E |
108 |
79.5 |
51 |
15 |
5 |
4-15 |
50 |
152 |
120.5 |
92 |
1.6 |
18 |
4-19 |
115 |
105 |
290 |
|
11/2"×11/2" |
G |
127 |
98.5 |
73 |
18 |
5 |
4-15 |
40 |
127 |
98.5 |
73 |
1.6 |
18 |
4-15 |
121 |
124 |
330 |
|
11/2"×2" |
G |
127 |
98.5 |
7 |
18 |
5 |
4-15 |
50 |
152 |
120.5 |
92 |
1.6 |
18 |
4-19 |
121 |
124 |
330 |
|
2"×3" |
J |
152 |
120.5 |
92 |
18 |
5 |
4-19 |
80 |
190 |
152.5 |
127 |
1.6 |
22 |
4-19 |
124 |
136 |
350 |
|
A41C300,A41C300P,A41C300R |
|||||||||||||||||
|
Nominal |
Dimension(mm) |
||||||||||||||||
|
do |
D |
D1 |
D2 |
b |
t |
Z-φd |
DN' |
D' |
D1 |
D2' |
b' |
t' |
Z-φd' |
L |
L1 |
H |
|
|
1/2"×1/2" |
D |
95 |
66.5 |
35 |
15 |
5 |
4-15 |
15 |
89 |
60.5 |
35 |
1.6 |
12 |
4-15 |
90 |
90 |
260 |
|
3/4"×1" |
D |
117 |
82.5 |
43 |
16 |
5 |
4-19 |
25 |
108 |
79.5 |
51 |
1.6 |
15 |
4-15 |
100 |
100 |
280 |
|
1"×1" |
D |
124 |
89 |
51 |
18 |
5 |
4-19 |
25 |
108 |
79.5 |
51 |
1.6 |
15 |
4-15 |
100 |
100 |
290 |
|
1"×2" |
E |
124 |
89 |
51 |
18 |
5 |
4-19 |
50 |
152 |
120.5 |
92 |
1.6 |
18 |
419 |
115 |
105 |
290 |
|
11/2"×11/2" |
G |
156 |
114.5 |
73 |
20 |
5 |
4-22 |
40 |
127 |
98.5 |
73 |
1.6 |
18 |
4-15 |
121 |
124 |
330 |
|
11/2"×2" |
G |
156 |
114.5 |
73 |
20 |
5 |
4-22 |
50 |
152 |
120.5 |
92 |
1.6 |
18 |
4-19 |
121 |
124 |
330 |
|
2"×3" |
J |
165 |
127 |
92 |
23 |
5 |
8-19 |
80 |
190 |
152.5 |
127 |
16 |
22 |
4-19 |
130 |
136 |
350 |
|
A41C600,A41C600P,A41C600R |
|||||||||||||||||
|
Nominal |
Dimension(mm) |
||||||||||||||||
|
d0 |
D |
D1 |
D2 |
b |
t |
Z-φd |
DN |
D' |
D1 |
D2 |
b' |
t' |
Z-φd |
L |
L1 |
H |
|
|
3/4"×1" |
D |
118 |
82.5 |
43 |
16 |
7 |
4-15 |
25 |
108 |
79.5 |
51 |
15 |
1.6 |
4-15 |
105 |
110 |
280 |
|
1"×2" |
D |
124 |
89 |
51 |
20 |
7 |
4-19 |
50 |
152 |
120.5 |
92 |
18 |
1.6 |
4-19 |
115 |
105 |
290 |
|
11/2"×11/2" |
F |
156 |
114.5 |
73 |
22 |
7 |
4-22 |
40 |
127 |
98.5 |
73 |
18 |
1.6 |
4-15 |
47 |
162 |
330 |
|
11/2"×2" |
F |
156 |
114.5 |
73 |
22 |
7 |
4-22 |
50 |
152 |
120.5 |
92 |
18 |
1.6 |
4-19 |
147 |
162 |
330 |
|
A41C900,A41C900P,A41C900R |
|||||||||||||||||
|
Nominal |
Dimension(mm) |
||||||||||||||||
|
d0 |
D |
D1 |
D2 |
b |
t |
Z-φd |
DN ' |
D' |
D1 |
D2 |
b' |
t' |
Z-φd |
L |
L1 |
H |
|
|
1"×11/2" |
D |
150 |
101.6 |
51 |
28 |
7 |
4-25 |
40 |
156 |
114.5 |
73 |
20 |
1.6 |
4-22 |
125 |
125 |
320 |
|
11/2"×11/2" |
F |
178 |
123.8 |
73 |
32 |
7 |
4-29 |
40 |
156 |
114.5 |
73 |
20 |
1.6 |
4-22 |
150 |
194 |
350 |
|
11/2"×2" |
F |
178 |
123.8 |
73 |
32 |
7 |
4-29 |
50 |
165 |
127 |
92 |
22 |
1.6 |
8-19 |
140 |
105 |
350 |
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