
Appendix D: Model Code Explanation
Model Code Description
69
Valve Type (Z)
The 640 Series controller has a normally closed valve, designated by a single number.
Valve Type
Valve
Order Code
Normally Closed
1
Table 14: Valve Type
Seal Material (Q)
The control valve can use either one of a variety of elastomer seal materials, or an all-metal seal.
Seal Material Selection
Seal Material
Order Code
Kalrez
K
Metal
M
Viton
V
Table 15: Seal Material Selection
Содержание 640A/641A
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