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General Use Thermowells

for Flanges (1/4” & 3/8”Diameter Elements)

A21A Series

General Use Thermowells
General Use Thermowells
Typical Pressure - Temperature Rating - PSI
MaterialTemprerature - F
7020040060080010001200
Brass
Carbon Steel
SS304
SS316
Monel
5,000
5,200
7,000
7,000
6,500
4,200
5,200
6,200
7,000
6,000
1,000
4,800
5,600
6,400
5,400

4,600
5,400
6,200
5,300

3,500
5,200
6,100
5,200

1,500
4,500
5,100
1,500


1,650
2,500
    note
  • When ordering, order by Part No. as indicated.
  • Stainless steel or brass compression fittings are available for mounting
Specifications
Exterior Thread (p)Stem Length (A)Insertion Length (U)Shank Diameter (Q)Bore Diameter (B) = 0260
Material SS304Material SS316Material Carbon SteelMaterial Brass
Part No.Part No.Part No.Part No.
1/2* NPT4
6
9
12
15
18
24
2-1/2
4-1/2
7-1/2
10-1/2
13-1/2
16-1/2
22-1/2
5/8"A21A-1
A21A-2
A21A-3
A21A-4
A21A-5
A21A-6
A21A-7
A21A-22
A21A-23
A21A-24
A21A-25
A21A-26
A21A-27
A21A-28
A21A-42
A21A-44
A21A-45
A21A-46
A21A-47
A21A-48
A21A-49
A21A-64
A21A-65
A21A-66
A21A-67
A21A-68
A21A-69
A21A-70
3/4* NPT4
6
9
12
15
18
24
2-1/2
4-1/2
7-1/2
10-1/2
13-1/2
16-1/2
22-1/2
3/4"A21A-8
A21A-9
A21A-10
A21A-11
A21A-12
A21A-13
A21A-14
A21A-29
A21A-30
A21A-31
A21A-32
A21A-33
A21A-34
A21A-35
A21A-50
A21A-51
A21A-52
A21A-53
A21A-54
A21A-55
A21A-56
A21A-71
A21A-72
A21A-73
A21A-74
A21A-75
A21A-76
A21A-77
1" NPT4
6
9
12
15
18
24
2-1/2
4-1/2
7-1/2
10-1/2
13-1/2
16-1/2
22-1/2
7/8"A21A-15
A21A-16
A21A-17
A21A-18
A21A-19
A21A-20
A21A-21
A21A-36
A21A-37
A21A-38
A21A-39
A21A-40
A21A-41
A21A-42
A21A-57
A21A-58
A21A-59
A21A-60
A21A-61
A21A-62
A21A-63
A21A-78
A21A-79
A21A-80
A21A-81
A21A-82
A21A-83
A21A-84
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