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A21W-16P stainless steel thread safety valve DN10DN15DN20DN253240DN50-DN65

A21W/F/H/Y-16 stainless steel external thread safety valve

price:USD$2090.00
discount 70% in 2018-09-24 to 2018-09-26
price: USD$ 1463.00
freight :USD$18.00,(Express)
freight :USD$7.00,(Postal parcel)
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Safety valve setting pressure classification

Nominal pressureMPA)        Setting pressure classification

1.6:      0.06-0.1   0.1-0.16   0.16-0.25   0.25-0.4    0.4-0.6  0.6-0.8   0.8-1.0   1.0-1.3  1.3-1.6

2.5:     〉1.3-1.6     1.6-2.0    2.0-2.5

4.0:     〉1.3-1.6     1.6-2.0    2.0-2.5     2.5-3.2     3.2-4.0

6.4:     〉2.5-3.2     3.2-4.0    4.0-5.0     5.0-6.4

10.0:    〉4.0-5.0     5.0-6.4    6.4-8.0     8.0-10.0

16.0:        10-13       13-16

32.0:        16-19       19-22       22-25       25-29       29-32

Setting (opening) pressure is set according to requirement

A21F, A21HA21WA21Y spring micro opening external thread safety valve

 

A21F, A21H spring micro open type safety valve suitable for external thread air, ammonia, oil gas temperature are less than 200...... On the equipment or piping of an equal medium. A21W-P and R type temperature are less than 200 are suitable for corrosive gas or liquid equipment or pipeline, as the overpressure protection device. Type KA21Y is suitable for temperature are less than 100 of the liquefied petroleum gas.

Main components and materials of spring micro opening external thread safety valve

 

NO.
Part name
A21H-C/A21F material
A21W-P/A21F-P material
A21Y-R material
1
Pipe joint
20
1Cr18Ni9Ti
1Cr18Ni12Mo2Ti
2
Pipe nut
35
2Cr13
1Cr18Ni9Ti
3
valve seat
35
1Cr18Ni9Ti
1Cr18Ni12Mo2Ti
4
valve body
2Cr13
1Cr18Ni9Ti
1Cr18Ni12Mo2Ti
5
Valve
2Cr13/2Cr13+PTFE
1Cr18Ni9Ti/1Cr18Ni9Ti+PTFE
1Cr18Ni12Mo2Ti
6
Spring seat
2Cr13
1Cr18Ni9Ti
1Cr18Ni12Mo2Ti
7
Spring
50CrVA
50CrVA coated fluoroplastic
50CrVA coated fluoroplastic
8
Lock nut
Q235-A
ZG230-450
1Cr18Ni9Ti
9
Spring guide pad
2Cr13
1Cr18Ni9Ti
1Cr18Ni12Mo2Ti
10
Adjusting nut
Q235-A
2Cr13
1Cr18Ni12Mo2Ti
 
Sealing surface material
"Y" type surfacing Co base hard alloy, "H" type surfacing D507, "W" type as valve body

- spring micro open type safety valve thread dimensions and connection dimensions

Model
Nominal diameter
do
d
Do
M
d1
D1
L
L1
≈H
KA21-16C
A21H-16C
A21H-40
A21W-16P
A21W-40P
KA21-16P
15
12
15
20
M27×1.5
G1/2"
30
35
76
66
20
16
20
25
M33×1.5
G3/4"
35
40
87
68
25
18
25
31
M39×1.5
G1"
40
50
100
105
A21Y-64
A21Y-64P
A21Y-100
A21Y-100P
15
10
15
25
M39×1.5
G1"
44
50
100
66
20
10
20
31
M39×1.5
G1"
44
50
100
68
25
12
25
31
M39×1.5
G1"
44
50
100
105
A21W-160/160P
15
8
20
/
M24×2
G1"
44
50
100
261
20
8
25
/
M33×2
G1"
44
50
100
261
25
8
28
/
M36×2
G1"
44
50
100
285
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