Twin spring type safety valve

Twin spring type safety valve applications

The valve is to be used as over-pressure protection device in equipments and pipelines of air , steam, water and other mediums with operation temperature no higher than 350℃. It is made through fixing A47H and A48Y safety valves of same specification to a Y shaped joint, whose nominal diameter refers to the inlet diameter of the Y shaped joint.

Twin spring type safety valve brief figure of structure

Twin spring type safety valve

Twin spring type safety valve Dimensions (mm)

Nominal
Diameter
DN (mm)		 Dimensions (mm)
L L1 B DN’ d0
A37
50 115 225 165 32 2×25
80 140 310 205 65 2×50
100 160 355 255 80 2×65
125 170 410 260 100 2×80
150 190 430 275 125 2×100
Nominal diameter of model A37 50 80 100 125 150
Nominal diameter of the relevant A47H 32 65 80 100 125
 
Nominal diameter of model A43 50 80 100 125 150
Nominal diameter of the relevant A47H 32 65 80 100 125
 
Nominal diameter of model A38 50 80 100 150
Nominal diameter of the relevant A48H 32 50 65 65
Nominal
Diameter
DN (mm)		 Dimensions (mm)   Nominal
Diameter
DN (mm)		 Dimensions (mm)
L L1 B DN’ do L L1 B DN’ do
A43 A38
50 115 225 165 32 2×25 50 115 225 165 40 2×20
80 135 295 190 50 2×40 80 135 295 190 65 2×32
100 160 352 255 80 2×65 100 160 265 265 80 2×40
125 170 410 260 100 2×80 150 195 415 275 125 2×65
150 190 430 275 125 2×100            
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