The COST €€ of Multiplex A614 PUMPS with Various PULSEGUARD Dampers Multiplex pumps, overlapping displacemen, pressure interception. System response is high frequency pressure pulsation. Isolate pump-system, "interception" guarantees smoothness. Multi plunger pumps, API 674, Triplex, and Quin. show higher frequency pulsation that is adressed with inline flow through dampers. |
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| 420 rpm, 5 plungers 50mmD 100mmStk. 400L/M 4.5 M/sec. 2" Sch 160 pipe, 190ml pulse Vol. (say 105 USGM) 35 Hz. frequency @ +&- 30 bar on a 200 Bar nominal (say 3000psi) system. With a 5 Litre (1.25 Gal) single flange Accumulator. | 2 pcs. 316 2" T sch 160@ €195 5 pcs. 316 2" 1500# @ €115 8 Hrs fit-up and welding @ €62.50/hr. 4.5 hrs. NDE QA & Hydro €280 300 in3 SS wetted Acc. C/W 2" 1500# face €1,969 3.) Total €3,714 |
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| Realized a "T" could be save by connecting Pi to the second port of a standard damper, they saved themselves a bunch of money. But Td off line it still didn't dampen. The dead branch leg couldn't respond in 0.014 of a second, & Pi couldn't detect any pulse! | 1 "T" & 3 Flgs. €440 5 hrs fit and weld €315 Standard twin port all SS Flo-Thru Damper, Flgd. 2.) Total €2,530 |
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| Finally - the disturbance was directed through a one third sized, true flo-thru. 3 ported DAMPER RESULTS: Pressure pulsation less than 1.5 Bar. Accumulator volume reduces flow fluctuation, --but dampers intercept system pressure response. |
No Ts no Flgs. €0,000 PipeHugger TW Flgd. C/W P.I. tap €1,825 Total €1,825 |
See also: Multiplex / Triplex / Plunger / Power Pumps Pulsation Dampener |
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