Shut Off and Control Valves

This type of butterfly, also called damper valve, has repeatedly proven itself due to its simple and robust design. Multiple leaf variants are described under multi-leaf dampers. By means of various options, this valve is able to fulfil different functions or can be adapted respectively to different operating conditions.

Function	shut-off, control or throttling, or a combination of all
Cross section	in circular or rectangular execution
Design	as flanged valve, as sandwich valve for clamping between flanges or as weld-end valves
Flange connection	to DIN / BS / ANSI / customer specification
Number of leafs	single leaf, multiple leaf valves are designated multi-leaf dampers
Medium	gaseous, pressure range to 10 bar, temperature range -50 to +1200°C
Explosion protection	optional
Shaft seal	gland packing, also Clean Air Guidelines conformant /O-ring
Leaf seal	without (sweeping) / metallic striking / soft seal, chambered
Insulation	without / internally lined / internally clad with fibre insulation / prepared for on-site external insulation
Materials	steel / stainless steel
Actuation	electric / pneumatic / hydraulic / hand lever / also with emergency actuation in the case of power failure