Product characteristics and benefits

• Face-to-face length acc. to EN 558-1, basic series 15 - from DN 500 1.5 x DN
• With flange ends on both sides acc. to EN 1092-2
• Control valve in straightway type
• With customized control device depending on operating conditions
• Low actuating torque due to pressure balanced valve piston
• Rotationally symmetrical flow guidance
• Annular flow cross section in each position
• Axial movement of the plunger by means of crank gear mechanism
• With self-locking worm gear unit including position indicator
• With electric actuator
• No blocking due to long piston guide rails
• Elastic profile sealing ring located in the no-flow zone for high durability
• Wear-resistant, corrosion-resistant and infiltration-proof piston guides in the body by micro-finished bronze weld overlay
• Piston sealed by Quad Ring

Materials

• Body: Ductile cast iron EN-JS 1030 (GGG-40)
• Piston guide rails: Bronze overlay welded
• Piston: Stainless steel 1.4301
• Valve sealing: EPDM
• Inner parts: Stainless steel (exception: > DN 600 crank gear from EN-JS 1030 (GGG-40))
• Bolts: Stainless steel A4 (DIN EN ISO 3506)
• Bearing bush: Bronze
• Eye bolts for lifting: Galvanized steel 1.0401 (C15)

Corrosion protection

• Inside and outside epoxy coating

Versions

• Standard version as described
• Special designs available on request
• With slotted cylinder to control high differential pressure for water with suspended solids (Form "SZ")
• With orifice cylinder to control high differential pressure (Form "LH")
• With cut off edge and sudden enlargement of cross sectional area at the seat to control lower differential pressure (Form "E")
• DN 1400 in VAG RKV plunger valve design