Post on 20-Apr-2020
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VAG RIKO® Plunger ValveThe new generation regulating - closing - safeguarding
VAG RIKO® Plunger Valve
VAG-Armaturen has redesigned the plunger valve which was already establis-hed in the water supply for many decades. Today it’s called our VAG RIKOPlunger Valve which is available in nominal widths from DN 150 up to DN 1600*,PN 10 up to PN 40.
The compact and single-piece body is made of high quality ductile iron EN-JS1030 (GGG 40). Up to DN 600 all inner parts are made of stainless steel. Anessential advantage is the new piston guid: armour-coated with bronze.New sealing systems for pistons, shaft bearings and seats guaranty a goodcorrosion protection and high performance.
Range of application
Plunger valves are designed to fulfillregulating functions in the water supply.Unlike butterfly or gate valves assumingonly shut-off functions in pipelinesystems, plunger valves meet the spe-cial requirements of regulating operati-ons.
* DN 700 and 1400 only as RKV Plunger Valve available.
• Sealing seat in the no-flow zone toensure maximum service life.
• Actuated by a self-locking worm gearwith constant transmission ratio toachieve a linear control curve inconnection with an optimal controlinsert.
Advantages
• Single-piece, compact body for alldiameter therefore reduction of thenumber of components and elimina-tion of a sealing point.
• Operation against pressure balancedconditions.
• Primary and secondary sealing of theshaft by multiple O-ring seals.
• Maintenance and disassembly of thevalve possible in accessible pipelineswithout dismantling the valve from thepipeline.
• Inner parts made of stainless steel asa standard for valve sizes DN150 - DN600 (crank, connecting rod, connec-ting rod bearing).
• Quadring design insensitive to depo-sits on the piston.
• High efficiency of the valve due to itsoptimised design and improved flowpath.
• Connecting rod running on bearings inmaintenance-free, robust bronze-plastic compound bushings.
Water treatment
As start-up valve for pumps, or as flow-control valve for filtration plants equip-ped with seating or cylinder in specialversions.
Distribution
As pressure regulating valve with diffe-rent regulating insertion sets.
VAG RIKO® Plunger Valve
Application• preferably as regulating valve with
enough back pressure• as pump start-up valve• very low head loss
Seat ring type E
Control device
Orifice cylinder LH Slotted cylinder SZ
Application• preferably as regulating valve • optimum adjustability to plant
requirements• prevention of cavitation in case of
high pressure differences• for systems with high pressure
differences, double-orifice cylinder available
Application• preferably as regulating valve • for water with suspended particles• optimum adjustability to plant
requirements• prevention of cavitation in case of
high pressure differences
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storage
water treatment
transmission
collection anddischarge
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distribution
Collection and discharge
As bottom outlet valve equipped withseat ring type E and venting system orhood pipe.
Storage
As pressure and level control valveequipped with orifice cylinder/slottedcylinder or seat ring.
Range of application
3 4Transmission
As flow-control or as a pipe burst safetydevice valve with orifice cylinder/slottedcylinder or as draining valve equippedwith seat ring or cylinder in special ver-sions.
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Complete kit of control devices toachieve optimum cavitation-free controlproperties in the system.
VAG RIKO® Plunger Valve
Thyssen-Krupp SteelDuisburg, Germany4 x VAG RIKO Plunger Valve DN 3004 x VAG RIKO Plunger Valve DN 500
Range of application:as control valve in a steel plant for cooling the rollers
Dalong Dam China1 x VAG RIKO Plunger Valve DN 1600
Range of application:as bottom outlet valve
Water works “Kleine Kinzig”8 x VAG RIKO Plunger Valve DN 200
Range of application:as control valve in a
water treatment plant
VAG-Armaturen GmbHCarl-Reuther-Str. 168305 MannheimGermanyPhone +49 6 21 749-0Fax +49 6 21 749-2153info@vag-armaturen.comwww.vag-armaturen.com
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