BRAIDED PUMP CONNECTORS Pumpsaver - Flex …

1 PumpsaverPumpsaverBRAIDED PUMP CONNECTORS flex -Hose Co. s Pumpsaver CONNECTORS are metal flexibleconnectors available in stainless steel or are used to preventdamage to pumps caused bypiping stress. Pumpsaver CONNECTORS also absorb vibration and noise found in pump CONNECTORS are easily installed and reducethe possibility of pump are designed to be pressuretested times their maximumrated working pressure and manufactured with a 4:1 safety factor. Their compact design savesvaluable space. Working pressure of standard hoseand braid up to 1325 PSI or fullvacuum and operating tempera-tures of -400 F to +1500 are manufactured with 321 stainless steel or bronze annular corrugated close pitch metal flexible are available with flanged ends, steel male NPTends, grooved ends, weld ends, orcopper tube female sweat ends andmay include multiple braids forhigher working sizes 1/2 to 14 Additional sizes and custom styles available.

2 Please consult Pump ConnectorsFeatures and Benefits WARRANTY Three year full replacement warranty. Refer to warranty registration for ManufacturingFlex-Hose Co. s Pumpsaver manufacturing process incorporates the removal of the first convolution lip at the crest creating a smooth transition. This eliminates internal sharp edges or burrs which may break off during operation, thus causing damage to pumps and precision rotating design and manufacturing utilizes state-of-the-art welding technology. flex -Hose Co. has welders certified to ASME Section are pressuretested for manufacturing integrityprior to release for you re reading this information, itis likely that at some time you ve beeninvolved in specifying, installing, orproviding solutions designed to reducevibration in mechanical piping sys-tems.

3 Mechanical room pumps ,chillers, cooling towers, fans, and boil-ers generate vibration and , or noise, is the result of a vibra-tion in an elastic medium. Even in thebest designed systems, there is no fea-sible way to avoid all noise and they are simply inherent in theprocess. A pump, for example, deliversa continuous stream of pulses to thefluid as the impeller blades pass thecutoff in their to the 1995 ASHRAEA pplications Handbook (Chapter 43 -Sound & Vibration Control, ).. All piping systemshave mechanical vibration generatedby the equipment which is transmit-ted by the pipe wall and the water col-umn. Flexible pipe CONNECTORS (1) pro-vide piping flexibility to permit isola-tors to function properly, (2) protectequipment from strain (stress) due tomisalignment, and (3) attenuate noiseand vibration transmission along thepiping.

4 All flexible CONNECTORS requireend restraint to counteract the pres-sure thrust. Metal hose is constructedwith a corrugated inner core andbraided cover that helps attain a pres-sure rating and provides endrestraints that eliminate the need forsupplemental control there are numerous pro-posals for resolving vibration prob-lems inherent to mechanical pipingsystems, each having its own merits,the following proposal will specificallyaddress an efficient and cost-effectivesolution using BRAIDED metal pumpconnectors. The information present-ed represents a collective effort byspecifying engineers, HVAC mechani-cal contractors, representatives/dis-tributors of pump manufacturers andHVAC mechanical equipment, and aleading manufacturer of BRAIDED metalpump CONNECTORS ( flex -Hose Co.)

5 , Inc.).The 1996 ASHRAE Systems andEquipment Handbook (Ch. 38 -Centrifugal pumps )depicts a typicalbaseplate mounted centrifugal pumpinstallation. The Installation andOperating notes specifically referenceflexible CONNECTORS in note Installvibration isolators in the pump suctionand discharge lines to reduce thetransmission of vibration noise tobuilding spaces. Figure 1- Centrifugal Pump InstallationFigure 1(above) depicts a base mounted pump installation on aspring inertia base along with other system includingthe shutoff valves, suction diffuser, multi-purpose valve, andbraided metal pump CONNECTORS on both the suction and BRAIDED MetalPump Connectormulti-purpose valveshutoff valveTYP>suction diffuserOption AOption CIncreasing flex Right Combination reduces pump vibrationENGINEERING BULLETIN4 Figure 1 - Option C(at left) further illustrates a very effi-cient and cost-effective transition from thesmaller diameter pumpflange to the largerdiameter flange of thedischarge piping.

6 TheIncreasing Flexpumpconnector, which utilizes an integral sizetransition, with optimalflow characteristics provides a time-savingdirect connection fromthe pump discharge to the outlet piping and other system components.(SF/CI-15 PPUMPSAVER manufactured by flex -Hose Co., Inc.)Figure 1 - Option D(at left) takes the cost-effective and time-saving Increasing Flexpump connector products (Option C) agiant-step further. This installation also provides an integral sizetransition by using anIncreasing Flexpump connector from the smallerdiameter pump flange tothe larger diameter grooved fittings of piping and other system components specified withgrooved piping (SF/CI-15 PxVG Pumpsaver manufactured by flex -Hose Co., Inc.).Option CFigure 1 - Option A(at left) depicts a standard stainlesssteel BRAIDED metalflexible pump connector with CONNECTORS areused to prevent damage to pumpscaused by pipingstress while alsoreducing pipelinevibration and noisetransmission in pumpinstallations.

7 Theseconnectors are easilyinstalled and reducethe possibility of pumpfailure. (SMPPUMPSAVER manufactured by flex -Hose Co., Inc.)Option AFigure 1 - Option B(atleft) illustrates a modi-fied stainless steelbraided metal flexiblepump connector whichprovides easy transitionfrom a pump flange togrooved piping. Thisstyle pump connectorallows easy installationwith only one pipingsystem component.(SF-15 PxVG Pumpsaver manufactured by flex -Hose Co., Inc.)Option BOption DPUMPSAVER products installed in accordance with flex -Hose Co. specifications are supported by a 3-year flange and other custom fitting configurations Working Pressure:Maximum operating pressure to which the hose shouldbe subjected. It is established at 25% of the nominaldesign burst pressure.

8 Maximum Proof Pressure:Maximum test pressure to which the hose should besubjected. It is established at 150% of the maximumworking pressure with the hose installed straight. Noharmful deformation shall field testsof hose assemblies installed invarying degrees of radial bend or parallel offset shouldbe limited to 120% of maximum rated working pres-sure at 70 F, or 150% of the actual operating pressure,whichever is the Design Burst Pressure:The pressure at which the hose can be expected to rupture, based on the minimum annealed ultimate tensile strength of the braid wire and the corrugatedhose alloys at 70 F with the hose installed ClassificationsFlex-Hose Co. s Pumpsaver BRAIDED pump connec-tors are capable of handling the following movements:Offset Motion:Motion that occurs when one end of the hose assemblyis deflected in a plane perpendicular to the longitudinalaxis with the ends remaining parallel.

9 Offset is mea-sured as displacement of the free end centerline fromthe fixed end centerline. Motion Frequency:Permanent Offset- The maximum fixed parallel offsetto which the corrugated metal hose assembly may bebent without damage to the convolutions. No furthermotion is to be imposed other than normal Offsetis motion that occurs on a regular orirregular cyclic basis. It is normally the result of ther-mal expansion and contraction or other non-continuous : flex -Hose Co. Pumpsaver manufactured with a 4:1 safety factorBraided Pump ConnectorsFlex-Hose Co. sPumpsaver Corrugated Metal Hose Selection FactorsLength300ss FerruleSch 40 Carbon SteelMale Braid321ss Annular Corrugated HoseFlex-Hose Co. s Pumpsaver SMNstyle has schedule 40 carbon steel male NPT ends, 321 stainless steel corrugatedhose, and single stainless steel braid.

10 Also available with stainless steel end fittings and multiple braids for higherpressures. Other alloys available on SMN (Threaded Ends) (In.)Length(In.)Pressure(PSI) 70 FParallel Offset (In.)PermanentIntermittentWeight(lb) (mm)Length(mm)Pressure(kPa) 20 CParallel Offset (mm)PermanentIntermittentWeight(kg). 21 21 81 81 21 81 41 45 SMP (Flanged Ends) (In.)Length(In.)Pressure(PSI) 70 FParallel Offset (In.)PermanentIntermittentWeight(lb) (mm)Length(mm)Pressure(kPa) 20 CParallel Offset (mm)PermanentIntermittentWeight(kg) 83 81 21 43 81 21 21 21 81 FerrulePlate Steel Flange150# DrillingFlat Face304ss Braid321ss Annular Corrugated HoseFlex-Hose Co. s Pumpsaver SMPstyle has 150 lb. plate carbon steel flanges, 321 stainless steel corrugated hose, and single stainless steel braid.