Safety Overflow Valve

Safety overflow valve applications

AY42H,HA802Y type safety overflow valves are to be pipelines in high-pressure pump stations to provide over pres-sure protection

Air compressor safety valve brief figure of structure

Structure of Safety Overflow Valve

Safety overflow valve chief property and specification

Type Nominal pressure
(Mpa)
Opening
Pressure
Working
Temperature
Suitable
Medium
AY42H-160
HA802Y-160
16.0 6.3~16.0 200 Water, Oil goods etc
AY42H-250
HA802Y-250
25.0 10.0~25.0
HY42H-400
HA802Y-400
HA802Y-600
  40.0-60.0   20.0~60.0

Safety overflow valve materials for main parts

No.   Name of part Materials
1 Body Carbon Steel
2 Seat Stainless steel
3 Disc Stainless steel
4 Bonnet Welding
5 Spring 50CrVA

Safety overflow valve dimensions (mm)


Type
Nominal diameter
DN(mm)
Dimension
RC ZG L L1 ≈H
HA802Y-600 15 1/2” 1/2” 52 90 250
25 1” 1” 52 113 275
40 1 1/2” 1 1/2” 52 157 336

Type
Nominal diameter Dimension
D D1 K M Z-¢d b L L1 RC ≈H
AY42H-160
AY42H-250
AY42H-400
15 135 95 25 M48×2 4-22 25 65 140 1″ 329
20 165 115 30 M52×2 6-26 28 80 150 1 1/2″ 447
25 200 145 38 M80×3 6-29 40 90 180 2″ 485
32 225 170 42 M100×3 6-33 50 100 200 2 1/2″ 570

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