FISHER™ D
Key Parameters
Category Parameter Description / Typical Values
Valve Body & Size Valve Body Style Double-port, top-and-bottom guided, balanced globe valve.
Size Range 1 inch (DN25) to 12 inches (DN300).
End Connections Flanged (ANSI Class 150 to 2500; PN ratings), Screwed (NPT), Butt-weld.
Face-to-Face Complies with ISA S75.08 / IEC 60534-3-1 standards.
Pressure & Temperature Pressure Rating Available in a wide range, from ANSI Class 150 to Class 2500.
Temperature Range Standard: -20°F to +450°F (-29°C to +232°C). Extended ranges available with special materials and designs (e.g., -450°F to 1100°F / -268°C to 593°C).
Flow Characteristics Flow Characteristics Linear, Equal Percentage (via characterized plugs).
Flow Coefficient (Cv) A wide range of Cv values available based on trim size and port diameter.
Leakage Class Leakage Class ANSI/FCI 70-2 Class II (Standard for double-port design). Class IV or better is achievable with special lapping or single-seat configurations.
Materials Body & Bonnet Carbon Steel (Standard), Stainless Steel, Alloy Steel, Chrome-Moly and other alloys.
Trim Standard Trim: 17-4PH Stainless Steel. Hardened Trim: Stellite, 440C Stainless Steel for erosive/cavitating services.
Actuator Actuator Type Typically paired with Fisher 657/667 Diaphragm Actuators or piston actuators for high-thrust requirements.