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Make the Change to Quality! Specify - Val-Matic Valve ...

Val-Matic s quality of design and meticulousworkmanship has set the standards by whichall others are measured. quality design fea-tures such as the Ener G Ball Valvewith itsenergy efficient design, fusion bonded epoxyand adjustable resilient Plug Valveshave more requestedfeatures than any other eccentric Butterfly Valvesinclude a field replaceable seat without theneed for special Disc CheckValveswith high strength and wear resistantaluminum bronze trim as Valvesfeaturing combinedresilient/metal-to-metal SealFoot Valvesprovided with a heavy duty stain-less steel screened andSurgebuster Check Valves designed withan unrestricted full flow Disc Check Valves utilizing stabilized compo-nents to provide extended Release,Air/Vacuum and Combination Air Valvesprovided standard with Type 316 stainlesssteel family of productsincludes the FloodSafe Inflow Preventer,FrostSafe two-way damper and theVentSafe vent pipe security cage.

A. Energy Efficient Body Ultra low headloss is the result of streamlined body contouring and 140% flow area through the body seat area. B. Contoured Disc

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Transcription of Make the Change to Quality! Specify - Val-Matic Valve ...

1 Val-Matic s quality of design and meticulousworkmanship has set the standards by whichall others are measured. quality design fea-tures such as the Ener G Ball Valvewith itsenergy efficient design, fusion bonded epoxyand adjustable resilient Plug Valveshave more requestedfeatures than any other eccentric Butterfly Valvesinclude a field replaceable seat without theneed for special Disc CheckValveswith high strength and wear resistantaluminum bronze trim as Valvesfeaturing combinedresilient/metal-to-metal SealFoot Valvesprovided with a heavy duty stain-less steel screened andSurgebuster Check Valves designed withan unrestricted full flow Disc Check Valves utilizing stabilized compo-nents to provide extended Release,Air/Vacuum and Combination Air Valvesprovided standard with Type 316 stainlesssteel family of productsincludes the FloodSafe Inflow Preventer,FrostSafe two-way damper and theVentSafe vent pipe security cage.

2 TheQuadroSphere Trunnion Ball Valvefea-tures a unique ball design with recessedsurfaces creating additional flow paths toprovide a self-cleaning action and reducedwear and torque. Val-Matic is totally committed to providing thehighest quality valves and outstanding serviceto our customers. Complete customer satisfac-tion is our the Change to Quality! SpecifyVal-Matic Valve and Manufacturing Riverside Drive, Elmhurst, IL 60126 Phone: 630-941-7600 Fax: 2016 Val-Matic Valve & Mfg. 9001:2008 certified company2/16 Bulletin 9000A. Energy Efficient BodyUltra low headloss is the result ofstreamlined body contouring and 140%flow area through the body seat area. B. Contoured DiscThe contoured disc provides ultra-lowheadloss and energy savings. Ahydrodynamically balanced designprovides lift and stabilization for variableconditions, minimum resistance to flow,and excellent flow disc provides minimumheadloss and energy savings.

3 The disccounteraction and short 40 disc strokeresults in quick closure minimizingreverse flow and surge Pivot Pins and BushingsMaximum strength is achieved byutilizing large diameter pins andbushings constructed of high tensilealuminum bronze material. Thesematerials provide superior wear andgall resistance as a result of their highBrinnell Hardness (BHN) and selecteddifference in hardness between Triple-Offset Seating GeometryLeak tight seating and long life areachieved at all working pressures byutilizing triple-offset seating geometrywhich provides excellent sealing andlow wear characteristics. The offsetsallow the disc edge to lift off the seatduring opening without sliding Disc Position IndicatorDirect connection provides preciseindication of the disc position at alltimes. Standard on sizes 6 and Inspection PortsThe ports allow access to the upstreamand downstream sides of the seat forsystem maintenance and serve asmounting pads for optional port covers are contouredto be flush with body interior tominimize Surge ControlBottom Mounted Oil Dashpots controlfinal stage of closing to reduce slam-ming associated with systems havingrapid flow reversal characteristics.

4 TopMounted Oil Dashpots are directlyconnected to the disc and provide fullopen and close control of the valvedisc to further reduce the potential forsurges and water Offset PivotThe offset pivot counteraction dividesthe disc by a one-third/two-third pro-portion which reduces slamming byproviding a self-cushioning Performance FeaturesFD2 Bottom Mounted OilDashpotTop Mounted OilDashpotCFABEGS urge ControlH3 ApplicationsThe Tilted Disc Check Valveis thepremier check Valve in the Val-Matic family. Itoffers unrivaled versatility, reliability, and asignificant cost savings over the life of thevalve. While some valves are ideally suited toa specific application or orientation, the TiltedDisc Check Valve is preferred in any number ofinstallation configurations and a wide rangeof media such as raw water, cooling water,treated water and wastewater single pump systems or systems where onlyone pump is operating at a time, Tilted DiscCheck Valves are commonly used with bothcentrifugal and turbine pumps where flowrates are in the range of 4-20 ft/sec andpressures up to 400 PSI.

5 For pumping systems with multiple pumps,surge considerations, and high capacity, TiltedDisc Check Valves with oil dashpots are on the system pressure, multiplepumps can cause a rapid flow reversal uponsystem shut-down and the flow rate can varyconstantly. The Tilted Disc Check Valve isoffered with optional top or bottom mountedoil dashpots to control disc closure in multiplepump systems even after a power failure. In closed surge tank applications, it is criticalto have a check Valve close rapidly to preventreverse flow through the pump after pumpstoppage. The Tilted Disc Check Valve withbottom mounted dashpot is the ideal solutionin this application; it allows the Valve to closerapidly and cushion the last 10% of travelwithout the need for an external Tilted Disc Check Valves are usedworldwide to offer superior service andfeatures in any number of applications andenvironments. Further information on specificapplication parameters and the benefits of theTilted Disc Check Valve are available online Disc Check Valvewith Well Service AirValve on Vertical Disc Check Valvewith Top Mounted Disc Check Valve onDischarge of Disc Check Valve withBottom Mounted Oil & BenefitsThe Val-Matic Tilted Disc Check Valve provides energyefficient operation while easily handling the mostsevere and demanding applications with features suchas non-slam closure, wear resistance, leak tight seating,and surge control.

6 This high performance check valveexcels in any number of operating conditions and hasthe added benefit of extremely low Efficiency - Cost SavingsThe Tilted Disc Check Valve conserves energy andprovides the lowest operating cost, because it providesthe lowest pressure loss characteristics of any checkvalve available today. Ultra-low headloss is the result ofstreamlined body contouring and a hydrodynamicallydesigned disc, (Figure 1) in combination with a 140%flow area through the body seat. The energy savingsrealized by using a 30 Tilted Disc Check Valve insteadof a conventional swing check Valve may result in a 40year energy cost savings of $189,232 (See page 10).Non-Slam Closing - System ProtectionThe non-slam closing characteristics of the Tilted DiscCheck Valve are achieved by utilizing a short discstroke, unique disc counteraction, and fixed pivot pinswithout stem packing. The short disc stroke, resultingfrom the angled seat design, is only 40 as compared tothe approximate 80 to 90 stroke found in aconventional swing check Valve (Figure 2).

7 This shortstroke reduces the closing time of the Valve disc. Thereduced closing time minimizes flow reversal and waterhammer normally associated with the sudden stoppingof reverse flow. The disc counteraction is the result of an offset pivot,which divides the disc into approximately a one-third/two-thirds proportion (Figure 3). This allows thetwo-thirds of flow that passes below the pivot to becounteracted by the one-third that passes above thepivot. This counteraction reduces slamming byproviding a self-cushioning effect not found inconventional swing check , while conventional swing check valves haverotating stems with packing, the Tilted Disc CheckValve s disc rotates freely on fixed pins. This provideslow inertia and friction to accelerate disc Performance Triple Offset SeatingLeak tight seating and long life are achieved byutilizing triple offset seating geometry. The disc pivotis offset from both the face of the seat (1) and thecenterline of the seat (2).

8 These offsets, together withthe inclined offset of the conical seat (3), provide non-binding, self-releasing seating (Figure 4). The offsetsallow the disc edge to lift off the seat during openingwithout sliding or binding (Figure 5).Figure 1 80 to 90 Stroke1/32/3 Figure 340 StrokeFigure 2 Pivot123 Figure 4 Figure 5 Features & BenefitsWear Resistance - Long LifeExtended Valve life is the result of excellent wearresistance through advanced features including discstabilization, triple offset seating, and a meticulousselection of materials of construction for matingsurfaces. Different grades of aluminum bronze are usedfor the disc edge and seat and the pivot pins andbushings to provide a significant difference in hardness,thereby reducing wear and galling. The hydrodynamicdesign of the disc shape provides lift and discstabilization during flow (See Figure 1). Tests conductedby an independent laboratory showed the disc to beextremely stable during both low and high flowconditions, thereby minimizing wear associated withdisc flutter.

9 Proof of Design TestingTo demonstrate the excellent seating and wearresistant qualities of the Tilted Disc Check Valve , anextensive full-scale cycle test was conducted andwitnessed by an independent engineering consultingfirm. After more than 100,000 cycles, the Val-MaticTilted Disc Check Valve had less than 10% of theallowable leakage for new valves as called for in thetesting sections of AWWA and MSS ControlThe dashpot configurations include high pressure oilcylinders and full rated disc connections. With oildashpots, the disc is precisely controlled using flowcontrol valves to regulate the flow of oil out of thecylinder, as opposed to an air cushion which onlyproduces a minimal dampening effect due to thecompressibility of select the proper Valve configuration, several criteriamust be considered. The number of pumps and thestatic head will affect how rapidly the water columnwill reverse when a pump is stopped.

10 The type of pumpcontrol will affect the required closing characteristicsof the Valve . Typical types of control include on-off,soft-start, variable speed, and electrically operatedcontrol valves. The length of the piping system is usedto estimate surges from changes in flow velocity. Thetype of surge relief system dictates the required closingtime for the Valve . Surge tanks require a quick-closingvalve to prevent the loss of stored water back throughthe pump. The criteria listed above are used to selectthe best Valve configuration as follows:Base ValveThe base Valve will provide non-slam closure in lowservice pumping applications. Base valves are typicallyused when the static head is less than 100 feet in singleor multiple pump application. A common applicationis the filter backwash pumps in a water very long systems, a power operated control valveis sometimes used. The control Valve is electrically wiredto the pump control and is programmed to slowly openand close to gradually Change the flow rate in thesystem over a 30-300 second period.


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