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GA51H-16C/25/40

Single lever safety valve

The GA51H safety valve is suitable for boilers and pressure vessels with temperatures ≤ 425℃, preventing pressure from exceeding the maximum allowable value and serving as an overpressure protection device for the equipment. The medium can be steam or air.

Product Classification:

Safety valve

Key words:

Online Message
ruifa1988@vip.sina.com

Main Performance Specifications

Model

Nominal Pressure (MPa)

Strength Test Pressure (MPa)

Set Pressure (MPa)

Applicable Temperature (°C)

Applicable Medium

GA51H-16C

1.6

2.4

≤1.16

-29~400℃

Steam, Air

GA51H-25 

2.5

3.75

≤1.18

GA51H-40

4.0

6.4

≤2.84

 

Main Component Materials

Part Name

Valve Body

Valve Seat, Stem, Disc 

Guide Bushing

Lever

Weight

Material

Carbon Steel Casting

Chromium Stainless Steel

Copper Alloy

Carbon Steel

Grey Cast Iron

 

Main Dimensions of GA51H - 16C Type

Nominal Diameter 
DN

Size (mm) 

L

L1

D

D1

D2

b

f

Z-φd

DN'

D'

D1'

D2'

b1

f1

Z-φd'

50

135

120

160

125

100

16

3

4-φ18

50

160

125

100

16

3

4-φ18

80

160

135

195

160

135

20

3

8-φ18

80

195

160

135

20

3

8-φ18

100

170

160

215

180

155

20

3

8-φ18

100

215

180

155

20

3

8-φ18

 

Main Dimensions of GA51H - 25 Type

Nominal Diameter 
DN

Size (mm) 

L

L1

D

D1

D2

b

f

Z-φd

DN'

D'

D1'

D2'

b1

f1

Z-φd'

50

135

120

160

125

100

16

3

4-φ18

50

160

125

100

16

3

4-φ18

80

160

135

295

160

135

22

3

8-φ18

80

195

160

135

20

3

8-φ18

100

170

160

230

160

160

24

3

8-φ23

100

215

180

155

20

3

8-φ18

 

Main Dimensions of GA51H - 40 Type

Nominal Diameter 
DN

Size (mm)

L

L1

D

D1

D2

D6

f1

b

f

Z-φd

DN'

D'

D1'

D2'

b1

f1

Z-φd'

50

135

120

160

125

100

88

4

20

3

4-φ18

50

160

125

100

16

3

4-φ18

80

160

135

195

160

135

121

4

22

3

8-φ18

80

195

160

135

20

3

8-φ18

100

170

160

230

190

160

150

4.5

24

3

8-φ23

100

215

180

155

20

3

8-φ18

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