The Belimo Butterfly Valves

Transcription

1 The Belimo Butterfly Valves Belimo D(U)6..series Butterfly Valves are designed to meet the stringent needs of HVAC applications requiring positive shutoff for liquids. Valve design features To satisfy higher IP requirement and large size butterfly automation, Belimo offers SY..series Rotary Actuators which are designed to mate with the D(U)6..series Butterfly Valves and other quarterturn valve applications. SY.. Actuator design features Mounting flange according to ISO Square stem head for formfit attachment of the Rotary Actuator.. Stem with EPDM Oring seal.. RPTFE stem bearing.. Valve body made of ductile cast iron (DN0...00). 6. Hole pattern for PN6/10/16 (wafer type), PN16 (lug type). 7. Stem made of stainless steel DoubleDfit attachment of the stem to the disc. 9. The disc made of ductile cast iron nylon coated or stainless steel 1. earbox with hardened planetary gear. 16 (on request). 2. Two stop screws for limiting of manual operation. 10. EPDM seat ring, integrated flange sealing.. Handwheel that acts directly on the planetary gear.. Motor protected by a thermostat. DoubleDfit of valve stem connecting with the valve disc. Terminals. produces close tolerance and easy disassembly. The disc can 6. Two limit switches and two auxiliary switches. be selfadjusting to centralise due to its unique design (DN0...00). The integrated flange sealing ensures positive connection of the valve body, seat ring and disc and provides complete 7. Housing made of cast aluminum (IP67). 8. xm hexagonal screws for cover of housing. 9. Sight glass for position indicator (rotary cylinder). isolation of the media from the body. It makes field replacement simple and fast, can seal with socket welding or welding neck flanges and without additional gaskets. The patented gear drive mechanism provides efficient, smooth operation while allowing easy manual override at any time. The ball profile style seat eliminates elastomer movement and reduces seat ring tearing or fatiguing due to bunching. Double seals prevent media coming into the valve. The primary seal is achieved by an interference fit of the molded seat flat with the disc hub. The secondary seal is created when the stem diameter is greater than the seat stem hole. The disc casting is precision machined and hand polished, then coated with nylon coating which gives a smooth and close disctoseat relationship. The three noncorrosive RPTFE (Reinforced Poly Tetra Fluoro With IP67 rating, easily visible position indicator, international standard ISO 211 mounting system, internal thermal motor overload protection, heater, two auxiliary switches and easily accessible wiring termination points. The units are easily visible in mechanical rooms with their characteristic Belimo orange color. Wiring diagrams included in all printed documentation are also affixed to the outside of the housing on the permanently attached product label. The torque ranges are available from...0nm. Ethylene) bushings completely isolate the valve shaft from the body, resulting in increased control of the valve disc, lower valve seating torque and longer valve life. The nylon coated disc features a very good corrosion resistance superior resistance to a broad range of chemical environments, as well as very low coefficient of friction and excellent resistance to impact and ultraviolet radiation. The stainless steel 16 disc is rust proof and can withstand higher temperature than the nylon coated disc. Actuators designed for D(U)6.. valves Belimo AF.., NRVU.., SRVU.. and RVU..series Rotary Actuators use the best possible electric motors and gearings and also employ highly sophisticated electronics for the control. The universal product design makes installation, operation and service much easier.

2 The sizing of Butterfly Valves Kv Value [m /h] Size DU0(S)/L(S) DN0 2" DU6(S)/L(S) DN 2." DU680(S)/L(S) DN80 " DU6100(S)/L(S) DN100 " DU6(S)/L(S) DN " DU6(S)/L(S) DN 6" DU6.. DN 8" DU620(S)/L(S) DN20 10" DU600(S)/L(S) DN00 12" D6(S)/L(S) DN " D600(S)/L(S) DN00 16" D60(S)/L(S) DN0 18" D00(S)/L(S) DN00 20" The maximum velocity in the butterfly valve is 9m/s (for Open/Close control). Closing Pressure and linkage D(U)6../L.. nylon coated disc series IP Actuator IP67 Actuator NRVU.. [10Nm] AF.. [1Nm] SRVU.. [20Nm] RVU.. [0Nm] 2XRVU.. [72Nm] SY1.. [Nm] SY2.. [Nm] SY.. [Nm] SY.. [00Nm] SY6.. [0Nm] SY7.. SY8.. [1000Nm] [0Nm] SY9.. [0Nm] DU0/L DU6/L DU680/L DU6100/L DU6/L DU6/L DU6/L DU6X/LX DU620/L DU600/L D6/L D600/L D60/L D00/L R 2R Linkage WD6.. AF AF AF Linkage WD6.. R Linkage WD6.. 2R Linkage WD6.. S2 Closing Pressure and linkage D(U)6..S../LS.. stainless steel disc series (on request) AF.. [1Nm] IP Actuator IP67 Actuator SRVU.. [20Nm] RVU.. [0Nm] 2XRVU.. [72Nm] SY1.. [Nm] SY2.. [Nm] SY.. [Nm] SY.. [00Nm] SY6.. [0Nm] SY8.. [0Nm] SY9.. [0Nm] Linkage Linkage Linkage Linkage WD6.. WD6.. WD6.. WD6.. DU0S/LS AF DU6S/LS DU680S/LS DU6100S/LS DU6S/LS DU6S/LS DU6S/LS AF R 2R 2R S2 DU6SX/LSX DU620S/LS DU600S/LS D6S/LS D600S/LS D60S/LS D00S/LS 2R Default: only SY Actuators and its Butterfly Valves are precalibrated and preassemblied in the factory.

3 D(U)6.. Butterfly Valves, wafer or lug pattern 2way Butterfly Valves flanged DN For 2point or modulating control of cold and hot water. Applications Typical applications include chiller isolation, cooling tower isolation, changeover systems, air handling unit, fan coil control, bypass and process control. Technical data Flow media Temperature of medium Nominal pressure Flow characteristic Rangeability Leakage rate Pipe connections Closing pressure Mounting position Maintenance Cold and hot water, sea water* C* 1 (PN16) Modified equalpercentage 10:1 (for range) Rate A Bubble Tight (EN1661) Flange ISO Wafer PN6/10/16 combination Lug PN16 See page Vertical to horisontal Maintenancefree Angle of rotation rotation Materials Body Ductile cast iron 0 (DN0...00) Disc Nylon coated ductile cast iron disc / Stainless steel 16 disc Seat EPDM seat ring Stem Stainless steel 16 Bushing RPTFE * For proper application of media please contact Belimo sales representative. Ordering example DU6 L / RVU20 * For linkage please refer to page. ** DU6X/LX, DU6SX/LSX is utilised at only. Mode of operation Actuator: Default: Package*: Disc & flange** pattern: RVU20 actuators, Open/Close, AC V Only SY Actuators and its Butterfly Valves are precalibrated and preassemblied in the factory "/" Valve and actuator supplied separately on request L(X)Lug, Nylon coated disc default(x)wafer, Nylon coated disc LS(X)Lug, stainless steel disc S(X)Wafer, stainless steel disc Size: DN Butterfly Valve: DU6 Low torque series D6 eneral torque series The Butterfly Valve is operated by a Rotary Actuator. Both SpringReturn or NonSpringReturn Actuators are available. Select the actuator according to required closing pressure and environmental condition of installation. The actuators are controlled by a standard Open/Close or modulating control system and move the disc of the valve to the position dictated by the control signal. Product features The large Kv values provide an economical control valve solution for larger flow applications. Manual operation Turn the valve by using a 20mm wrench with the manual button of NRVU.., SRVU.. or RVU.. actuator pressed. The valve matched with SY actuator can be operated by turnning the wheel of SY or via an 8mm wrench (SY1..).

4 6 Dimensions of Butterfly Valves Dimensions for PN16 lug pattern Butterfly Valve [mm] Lug pattern Wafer pattern Dimensions for PN6/10/16 wafer pattern Butterfly Valve [mm] DU0.. DU6.. DU680.. DU DU6.. DU6.. DU6.. DU620.. DU600.. PN6 PN10 PN16 nø nø D6.. D600.. D60.. D00.. Top flange F F F nø Size DN SS NC DU0L.. DU6L.. DU680L.. DU6100L.. DU6L.. DU6L.. DU6L.. DU620L.. DU600L.. D6L.. D600L.. D60L.. D00L.. Size DN nm M16 M16 8M16 8M16 8M16 8M20 12M20 12M 12M 16M 16M27 20M27 20M0 Top flange F F F NC SS nø nm

5 D(U)6.. Valve installation and maintenance instructions Installation and maintenance instructions Preinstallation procedure Valve installation procedure 1) Be certain the adjoining pipeline is free from any foreign material such as rust and pipe scale or welding slag that could damage the seat and disc sealing surfaces. 2) Any actuator should be mounted on the valve prior to installation to facilitate proper alignment of the disc in the valve seat. ) Check the valve identification tag for materials and operating pressure to ensure they are correct for the application. ) Check the flange bolts or studs for proper size, threading and length. Position the connecting pipe flanges in the line to insure proper alignment prior to valve installation in handling the valve so as to prevent possible damage to the disc or seat faces. Spread the pipe flanges apart enough to allow the valve body to be located between the flanges without actually contacting the flange surfaces (see Figure 1). Exercise particular care in handling the valve so as to prevent possible damage to the disc or seat faces.! WARNIN! Personal injury or property damage may result if the valve is installed where service conditions could exceed the valve ratings. Note: Actuator overload damage may result if the valve is installed without sock weld or welding neck flange. Safety precautions eneral maintenance 1) For both wafer and lug valves: a. Place the valve between the flanges. Install all bolts between the valve and the mating flanges. Hand tighten bolts as necessary. 2) Before completing the tightening of any bolts, the valve should be centered between the flanges and then carefully opened and closed to insure free, unobstructed disc movement (see Figure 2). ) Tighten the flange bolts evenly to assure uniform compression. ) If an actuator is to be used, electricity should be connected to the unit as specified by the actuator manufacturer. ) Cycle the valve to the fully open position, then back to the fully closed position. Check the actuator travel stop settings for proper disc alignment. The valve should be operated to assure that no binding is taking place. 6) The valve is now ready for operation. Before removing the valve from the line or loosening any bolts, it is important to verify the following conditions: 1) Be sure the line is depressurised and drained. 2) Be sure of the pipeline media. Proper care should be taken for protection against toxic and/or flammable fluids. ) Exercise caution if removing the actuator from the valve when the pipeline is under pressure. The valve disc may move suddenly due to the pressure. ) Always be sure that the disc is in the close position before removing the valve. The following periodic preventative maintenance practices are recommended for all Butterfly Valves: Figure 1 Initial installation of valve 1) Operate the valve from fully open to fully closed to assure operability. 2) Check flange bolting for evidence of loosening and correct. ) Inspect the valve and surrounding area for previous or existing leakage at flange faces or shaft connections. ) Check piping and/or wiring to actuators and related equipment for looseness and correct as needed. Disc opened beyond valve body face. Pipe flanges not spread sufficiently. Disc positioned in the almost closed position. Pipe flanges spread allow sufficient room for valve. Figure 2 Centering and flanging of valve gaskets Disc in closed position. askets installed between valve and mating flanges No flange gaskets used. Disc in the "almost closed" position. Remember: Install the valve with the disc in the "ALMOST CLOSED" position. Do not use any flange gasket. Figure Final valve alignment and tightening of flange bolts Pipe flanges misaligned. Uneven torque applied to bolting. Piping aligned. Thread engagement even on both sides of valve. 2