Typical Technical Parameters Parameter Specification / Note Product Line Fisher Vee-Ball V150 Model / Assembly KJ3004X1-BA1 Valve Size 4 inch (Derived from the model number "3004" where "4" typically indicates size) Pressure Class Class 150 (Derived from the model number "V150") End Connection Flanged (Standard for this pressure class) Body Material Carbon Steel (Standard material, WCB) Trim Material Stainless Steel (Standard trim, e.g., 316 SS) Actuator Type Spring Diaphragm Pneumatic Actuator (Typical for this assembly) Actuator Action Fail-Closed (Spring-to-Close, Air-to-Open) - This is a common default configuration for the "-BA1" suffix. Positioner Likely included; type could be pneumatic or possibly a basic electro-pneumatic. Flow Characteristic Equal Percentage (Inherent to the V-notch ball design)