Throttle valves
RTDK
Centric and double eccentric butterfly valves with electric, pneumatic or hydraulic actuators. Flexible designs and lengths due to welded constructions. Ideally designed for your needs. Convincing control behaviour at low torques. Available as double flange version or with welding end. Ideally suited for liquid and gaseous media.
Operating pressure: max. 100 bar Operating temperature: -200°C bis +900°C Sitzgeometrie: Centric/double Shaft bearing : eccentric depending on operating temperature Inner seal: soft sealingouter Outer seal: up to max. 200° C double O-ring sealing, >200° C low-maintenance stuffing box seal made of pure graphite |
Rohrsystemtechnik Drosselklappe (RTDK) - Zentrische und doppeltexzentrische Drosselklappe
Branch of industry | RTDK |
|
|||||||||||||||||||||
Power plant - Cooling water - Air condenser - Heating water - Steam turbine - Steam circuit |
• • • |
||||||||||||||||||||||
Water, Sea water | • | ||||||||||||||||||||||
Water dam | • | ||||||||||||||||||||||
District heating | |||||||||||||||||||||||
Steam generation | |||||||||||||||||||||||
Pump station | |||||||||||||||||||||||
Gas, Natgas | • | ||||||||||||||||||||||
Mineral oil | • | ||||||||||||||||||||||
On-shore, Off-shore | |||||||||||||||||||||||
Chemistry | • | ||||||||||||||||||||||
Petrochemistry | • | ||||||||||||||||||||||
Refinery | • | ||||||||||||||||||||||
Garbage incineration | |||||||||||||||||||||||
Mining industry | • | ||||||||||||||||||||||
Mechanical engineering | • | ||||||||||||||||||||||
Sugar industry | |||||||||||||||||||||||
Paper industry | |||||||||||||||||||||||
Shipbuilding |
• Recommended application
• soft sealing to EN 593
• face-to-face length to EN 558-1, basic series 14 (DIN 3202, F4)
• with flange connection on both sides to EN 1092 / ANSI B16.5 and B16.47-
• flow-optimised, free-swinging disc-
• corrosion-protected bearing arrangement in the body by means of double O-ring seal and closed bearing eyes on the disc-
• wear-resistant, corrosion-resistant, flow-optimised and infiltration-proof body seat
• sealed against backflow to EN12266
Material
• Body: P265GH (1.0425); P355NL1 (1.0566), SA516 Gr.60/70; X5CrNi18-10 (1.4301); X6CrNiMoTi17-12-2 (1.4571)
• Butterfly disc: P265GH (1.0425); P355NL1 (1.0566), SA516 Gr.60/70; X5CrNi18-10 (1.4301); X6CrNiMoTi17-12-2 (1.4571) • • inner seal: Perbunan, EPDM, Viton, PTFE
• outer seal: Perbunan, EPDM, Viton, PTFE
• butterfly valve shaft: Stainless steel 1.4021
• body seat: High-alloy build-up welding or wear-resistant, stainless steel, precision machined other materials on request
Corrosion protection
• Body: Inside and outside epoxy coating according to GSK guidelines possible
• Valve disc: Epoxy coating according to GSK guidelines possible (Exceptions: DN100-125, valve disc made of stainless steel)
Versions
• without closing support
• with lever and adjustable counterweight as gravity-dependent closing support for backflowing medium
• with lever, adjustable counterweight and hydraulic end position cushioning for backflowing medium -
• with lever, adjustable counterweight, hydraulic end position cushioning and forced control to minimise pressure loss
• with lever, adjustable counterweight, hydraulic end position cushioning and forced control as closing support for backflowing medium
• with analogue or digital position indicator
• enamelled or with special coating on request
• suitable for gas according to en 13774