Pneumatic shut-off butterfly valve
DN 50 - 300, PN 16 | 3335 series SAMSON

Application
Tight-closing butterfly valve for process engineering and plants
with industrial requirements
Nominal size DN 50 to 300 · NPS 2 to 12
Nominal pressure PN 10 and PN 16
max. operating pressure 10 or 16 bar
Temperatures -10 to 150 °C · 14 to 302 °F
Type 3335/BR 31a Butterfly Valve with
• Type 3335 Butterfly Valve and single-acting BR 31a-SRP
Pneumatic Rotary Actuator
Valve body material
• Cast iron or
• Spheroidal graphite iron
Seat ring
• EPDM or
• PTFE
Butterfly disc material
• Spheroidal graphite iron or
• Cast stainless steel
• PTFE jacketing
Attachment of control valve accessories, such as pneumatic or
electropneumatic positioners, electrical or pneumatic limit
switches or solenoid valves according to VDI/VDE 3845.