Seismic-resistant control and shut-off valves for industrial applications, featuring material specs, flow characteristics, and actuator options.
This document details LDM’s 200 Line seismic-resistant control and shut-off valves, designed for regulation and shut-off of process liquid flow. Valves meet seismic class 1b standards for up to 30 m.s² response spectrum. Materials, flow characteristics, and actuator options are specified. Installation guidelines include orientation, strainer requirements, and temperature limits.
Valves are available in various materials including stainless steel and cast steel, with seat and packing options for different media and temperatures. Flow characteristics include linear, equal-percentage, LDMspline, and parabolic. Actuators include hand wheel and electric types with specified linear forces. Seismic resistance and leakage rates are defined by international standards.
| Seismic Resistance | Class 1b, up to 30 m.s² response spectrum, 0 to 33 Hz |
|---|---|
| Max Differential Pressure | Up to 4.0 MPa for perforated plugs, 1.6 MPa for standard |
| Flow Characteristics | Linear, equal-percentage, LDMspline, parabolic, on-off |
| Leakage Rate | <0.01% Kvs for shut-off valves, <0.1% Kvs for control valves |
The valves meet seismic class 1b standards for up to 30 m.s² response spectrum, 0 to 33 Hz.
The valves offer linear, equal-percentage, LDMspline, parabolic, and on-off characteristics.
The maximum differential pressure for standard valves is 1.6 MPa.