This document describes a pneumatic control valve in a two-way form with PTFE-V ring sealing, suitable for water and steam in DN15-50. The valve body is made of EN-GJS-400-18-LT (GGG-40.3) material, with a pressure range of PN 16/25 and reduced Kvs-values. The valve has excellent flow characteristics and sealing performance, and can operate in high temperature environments. Various accessories and special types are available.
This document provides technical specifications for the KFM-Regelungstechnik 321 4/5..red1 E pneumatic control valve. The valve is a two-way form designed for water and steam applications, featuring a body made of EN-GJS-400-18-LT (GGG-40.3) and a spring-loaded PTFE-V-ring unit for spindle sealing. It supports pressure ratings of PN 16 and PN 25 with a positioning ratio of 50:1 and an equal percentage flow characteristic.
| Body Material | EN-GJS-400-18-LT (GGG-40.3) |
|---|---|
| Pressure Rating | PN 16, PN 25 |
| Sealing Type | PTFE-V-ring |
| Flow Characteristic | Equal percentage |
| Positioning Ratio | 50:1 |
| Leakage | < 0.01% Kvs |
| Operating Pressure (Standard) | 1.6 bar |
| Max Media Temperature (PTFE) | 250°C |
| Max Media Temperature (Graphite) | 350°C |
The valve has an equal percentage flow characteristic.
The internal parts are made of stainless steel.
The valve is available with pressure ratings of PN 16 and PN 25.