Appendix B: Model Code Explanation
Model Code
41
Appendix B: Model Code Explanation
Model Code
The options for your valve are identified in the model code when you order the unit.
Type Number
The type number designates the model number of the valve.
Type 253 with ASA Flanges
Type
Number
Nominal Inside
Diameter
inches (mm)
ASA Flange
Size
Flapper
O-Ring
253B-2-2-1
1.888 (48)
2”
Yes
253B-2-2-2
1.950 (50)
2”
No
253B-60-2-1
2.362 (60)
2”
Yes
253B-60-2-2
2.362 (60)
2”
No
253B-3-2-2
3.025 (77)
2”
No
253B-3-3-2
3.025 (77)
3”
No
253B-4-3-2
3.965 (101)
3”
No
253B-4-4-2
3.965 (101)
4”
No
253B-6-4-2
5.781 (147)
4”
No
253B-6-6-2
5.781 (147)
6”
No
253B-8-6-2
7.501 (191)
6”
No
253B-8-8-2
7.501 (191)
8”
No
253B-10-10-2
10.000 (254)
10”
No
Summary of Contents for 253B-1-2CF-1
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