Safety Valve Series

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Spring Fall Lift, Low Lift Thread Safety Valve

manufacturer: Shanghai MeiYan Yi Pump & Valve Co., Ltd.
Eml: sales@1bengfa.com

Tel: +86 (21) 5640 2009
Mob: +86 138 1691 3072(WeChat Same Account)

product drawing

A28H-16
A28H-16
A27H-1
A27H-1
A21H-16
A21H-16

A28H 16/25/40 type spring fall lift safety valve with handle

Dimensions & constructral diagram

A28H-16 constructral diagram
A28H-16 constructral diagram
A27H-1 constructral diagram
A27H-1 constructral diagram
A21H-16 constructral diagram
A21H-16 constructral diagram

External and connection dimensions(mm)

nominal diameter DN(mm) Dimensions(mm)
do Rc〞 L L1 G〞
15 10 ZG1/2 37 62 G3/4
20 12 ZG3/4 40 65 G1
25 15 ZG1 45 72 G11/4
32 20 ZG11/4 55 85 G11/2
40 25 ZG11/2 67 100 G2
50 32 ZG2 76 112 G21/2
65 40 ZG11/2 110 135 G3
80 50 ZG3 110 145 G4
Note: it is mainly applied to water, air, steam of working temperature less than ≤200℃

A21H-16C/25/40 A21W-16/25/40P A24F16/25/40 type low lift safety valve

External and connection dimensions(mm)
nominal diameter DN(mm) Dimensions(mm)
Do do L L1 G〞
15 20 12 35 65 G5/8
20 25 16 42 76 G3/4
25 31 20 50 84 G1
32 ZG11/4 25 55 85 G11/4
40 ZG11/2 32 55 84 G11/2
50 ZG2 40 67 101 G2
65 ZG21/2 50 76 120 G21/2
80 ZG3 65 83 135 G3
Note:working temperature:A42H type ≤200℃ A21W type ≤200℃ A21F type -40℃~80℃
applicable medium:A21H type is applied to air, ammonia,petroleum gas, water, etc.
A21W type is applied to corrosive gas or liquid 
A21F type is applied to liquefied petroleum gas

A27H-16/25/40 A27W-16/25/40P type spring low lift safety valve

External and connection dimensions(mm)
nominal diameter DN(mm) Dimensions(mm)
do Rc〞 L L1 G〞
15 10 ZG1/2 40 60 ZG1/2
20 15 ZG3/4 45 70 ZG3/4
25 20 ZG1 50 80 ZG1
32 25 ZG11/4 55 85 ZG11/4
40 32 ZG11/2 55 84 ZG11/2
50 40 ZG2 67 101 ZG2
65 50 ZG11/2 76 120 ZG21/2
80 65 ZG3 110 135 ZG3
Note:working temperature:≤200℃ applicable medium:A27H-16C/25/40 type is applied to water, air,steam; A27W-16P/25P/40P type is applied to corrosive gas
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