Single-Lever Safety Valve

Single-lever safety valve applications

GA42H type safety valve is applicable to the power-station boiler and pressure container (The working temperature is 450℃ or less.), Which will avoid the pressure rate belong the allowed upper limit. The medium can be steam or air.

Single-lever safety valve brief figure of structure

Structure of Single-Lever Safety Valve pic 1
Structure of Single-Lever Safety Valve pic 2

Single-lever safety valve materials for main parts


No.
Name of part Materials
1 Body Carbon steel
2 Guide sleeve Stainless steel
3 Disc 2Cr13
4 Stem 2Cr13
5 Lever Carbon steel
6 Hammer Cast iron

Single-lever safety valve dimensions (mm)

  Type Nominal
Diameter
DN (mm)
Dimension (mm)
do-z D D1 D2 D6 f f1 b Z-¢d L H Outlet Flanged Outlet Socket
DN’ D2’ D1’ D’ n-M d1 K2 K3 D3
GA42H-16 50 40×1 165 125 100 / 3 / 16 4-18 840 412 125 175 200 235 8-M16 120 145 162 190
GA42H-25 50 40×1 165 125 100 / 3 / 20 4-18 840 412 125 175 200 235 8-M16 120 145 162 190
GA42H-40 50 40×1 165 125 100 88 3 4 20 4-18 840 412 125 175 200 235 8-M16 120 145 162 190
GA42H-64 50 40×1 175 135 105 88 3 4 26 4-23 840 420 125 175 200 235 8-M16 120 145 162 190
GA42H-100 50 40×1 195 145 112 88 3 4 28 4-25 840 420 125 175 200 235 8-M16 120 145 162 190

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