ANGLE SEAT VALVES
The SED Angle Seat Valve is composed of a 2/2-way angle seat valve body and a pneumatically operated piston actuator, which is mounted with a stainless steel adaption to the valve body. Depending on the size, the actuators are made of plastic or aluminium. The plastic actuators consist of a high temperature resistant plastic. A self-adjusting gland assures reliable longlife performance. The gland is protected against dust and damage by a wiper, which is located in front of the gland.
The SED Angle Seat Valve is suitable for shut off, dosing, control and regulating liquid or gaseous media. The angle seat valve can be designed to specific requirements. Applications engineered for optimized flow characteristics is achieved by reduced Kv/Cv-values and equal percentage or linear flow curves. Even simple solutions like noise reduction are possible.
Type 584
Pneumatic valve, plastic actuator material PAMX D6
Type 584, Actuator 70
Operating Medium: Neutral, agressive, gaseous, and
liquid media. Media must be
compatible with the materials of
construction.
Viscosity: Max. 600 mm2/sec
Medium Temperature: -10 to +180°C for PTFE sealing
Working Pressure: See table
Control Medium: Neutral gases, air
Temperature
Control Medium: Max. +80°C
Working Temperature: -10 to +90°C
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Type 590
2/2-Way Angle Seat Valves with Two Stage Actuator
The pneumatically controlled two stage piston actuator is made of two plastic actuators. The two stages can be independently actuated from each other. In order to open the valve completely with the full flowrate, the lower piston has to be actuated. Limited opening or flowrate is possible by actuating the upper piston. An adjustable stroke limiter allows to adjust the linear movement of the upper position. An optical indicator which is directly connected with the valve spindle shows the stroke. The control function of the valve is normally closed (Cf.1).
Application
The valve is mainly used for filling with controlled filling of a tank, container or barrel. For filling, the valve is completely opened with the full flow rate. At the end of the filling cycle, the valve automatically reduces to the second stage of filling with a reduced flow rate for an accurate finish fill.
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Type 580
Type 580, Manually operated
Advantages
• Hygenic design, easy cleaning
• High temperature resistance
• Minimized dead leg design
• Optical position indicator
• Easy maintenance
• Good regulation properties
• Clean and smooth exterior for sterile washdowns
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Type 581
Type 581, Manually operated 
Advantages
• Hygenic design, easy cleaning
• High temperature resistance
• Stainless steel below
• Minimized dead leg design
• Optical position indicator
• Easy maintenance
• Good regulation properties
• Clean and smooth exterior for sterile washdowns
• Regulating cone
Specific application
• Pure or clean steam and gaseous media
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