Pulsation Dampener Calculator

**Buttons are not active – will be made active before launch**

Volume per Stroke in Cubic Inches (in3) = (GPM / Strokes/Min) × 231
Volume per Stroke in Cubic Inches (in3) = (GPH/60 / Strokes/Min) x 231
Dampener Size (C) = (V) x (K) x (SP/Pmin)y / 1 – (SP / Pmax) y
WHERE:
V=Volume per Stroke in Cubic Inches (in*)
SP =Mean System Pressure (Pmin + Pmax) /2
Pmin =Minimum Discharge Pressure in PSI
Pmax =Maximum Discharge Pressure in PSI
K=Constant from the Pump-type Table shown in menu
Y=0.714 (if charged with Compressed Air); 0.714 (if charged with Nitrogen)

Measurement

V= Volume per Stroke in Cubic Inches (in*)
GPH = Volume per Stroke in Cubic Inches (in3) = (GPH/60 / Strokes/Min) x 231
GPM = Volume per Stroke in Cubic Inches (in3) = (GPM / Strokes/Min) × 231

GPH

GPM

Type of Gas

Y = 0.714 if charged with compressed air
Y = 0.714 if charged with nitrogen

Compressed Air

Nitrogen

GPH or GPM will appear conditionally based on selection above

GPM

GPH

System Pressure

PSI – Input Whole Number

Strokes per Minute

Input Whole Number

Desired Dampening

(+/- of system pressure) 1-100 (recommended 2.5% – 5%)

Type of Pump

Choose K Factor
Simplex – Single Acting = .60 
Simplex – Double Acting = .25
Duplex – Single Acting = .25
 Duplex – Double Acting = .15
Triplex – Single Acting = .13 
Triplex – Double Acting = .06
Quadruplex – Single Acting = .10 
Quadruplex – Double Acting = .06
Quintuplex – Single Acting = .06 
Quintuplex- Double Acting = .02

Volume per stroke

(cubic inches)
value (hidden) used in final PD sizing calculation

Mean System Pressure value

HIDDEN – USED IN FINAL PD SIZING CALCULATION
( {GPM:14} / {Strokes per Minute:5} ) * 231

Minimum Discharge Pressure

HIDDEN – USED IN FINAL PD SIZING CALCULATION
{System Pressure (psi):4} * (1-{Strokes per Minute:5}/100)

Maximum Discharge Pressure

{System Pressure (psi):4} *(1+ {Strokes per Minute:5}/100)

Volume/Stroke (cubic inches)

(({GPH:13}/60 + ({GPM:14} * 60 / 60)) / {Strokes per Minute:5}) * 231

Calculated Dampener Size

({Volume/Stroke (cubic inches):12} * {K factor, drop down :17} * {Minimum Discharge Pressure:11}) / 1-{Maximum Discharge Pressure:10}

Name

First Last

Company

Imperial GPH AIR GPH: 5 SPM: 5 Volume/Stroke is Output System Pressure: 5 Minimum Discharge and Maximum Discharge is Output (5.00 psi, 5.00 psi) Desired Dampening: 3 Minimum Discharge, Maximum Discharge, Volume Stroke is Recalculated (4.85psi, 5.15psi, 3.85in(3) This is minimum -3% or maximum +3% discharge K Factor: Simplex-Double Acting = .25 Only affects Calculated Dampener Size: 47.10in(3)