Dezurik Difference

APCOST

Energy Cost Savings Comparison Worksheet

APCOST is a DeZURIK Energy Cost Savings Comparison tool that provides an informative method of economically comparing the cost savings achieved by using an APCO or Willamette valve when compared to one alternative valve in a pumped system.

Enter input information in designated cells

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Energy Cost Savings Summary by Year

Project Name:
// Project Engineer:

Year Flow (gpm) Velocity (fps) Power Cost ($/kwh) Comparison Valve Diff.
(ft)		 APCO Valve Diff.
(ft)		 Comparison Cost to Use
($)		 APCO Cost to Use
($)		 Yearly Savings
($)		 Cumulative Savings
($)
1 19000.0 20.95 $0.090 13.62 2.45 $53,397.05 $9,611.47 $43,785.58 $43,785.58
2 19038.0 20.99 $0.092 13.68 2.46 $54,792.43 $9,862.64 $44,929.80 $88,715.38
3 19076.1 21.03 $0.094 13.73 2.47 $56,224.28 $10,120.37 $46,103.91 $134,819.29
4 19114.2 21.07 $0.096 13.79 2.48 $57,693.55 $10,384.84 $47,308.71 $182,128.00
5 19152.5 21.11 $0.097 13.84 2.49 $59,201.21 $10,656.22 $48,544.99 $230,672.99
6 19190.8 21.16 $0.099 13.90 2.50 $60,748.27 $10,934.69 $49,813.58 $280,486.58
7 19229.1 21.20 $0.101 13.95 2.51 $62,335.76 $11,220.44 $51,115.33 $331,601.90
8 19267.6 21.24 $0.103 14.01 2.52 $63,964.74 $11,513.65 $52,451.08 $384,052.99
9 19306.1 21.28 $0.105 14.07 2.53 $65,636.28 $11,814.53 $53,821.75 $437,874.73
10 19344.7 21.33 $0.108 14.12 2.54 $67,351.50 $12,123.27 $55,228.23 $493,102.97
11 19383.4 21.37 $0.110 14.18 2.55 $69,111.55 $12,440.08 $56,671.47 $549,774.44
12 19422.2 21.41 $0.112 14.24 2.56 $70,917.59 $12,765.17 $58,152.42 $607,926.86
13 19461.0 21.45 $0.114 14.29 2.57 $72,770.82 $13,098.75 $59,672.08 $667,598.93
14 19500.0 21.50 $0.116 14.35 2.58 $74,672.49 $13,441.05 $61,231.44 $728,830.37
15 19539.0 21.54 $0.119 14.41 2.59 $76,623.85 $13,792.29 $62,831.56 $791,661.93
16 19578.0 21.58 $0.121 14.47 2.60 $78,626.20 $14,152.72 $64,473.49 $856,135.42
17 19617.2 21.63 $0.124 14.52 2.61 $80,680.88 $14,522.56 $66,158.32 $922,293.74
18 19656.4 21.67 $0.126 14.58 2.62 $82,789.25 $14,902.07 $67,887.19 $990,180.93
19 19695.8 21.71 $0.129 14.64 2.64 $84,952.72 $15,291.49 $69,661.23 $1,059,842.16
20 19735.1 21.76 $0.131 14.70 2.65 $87,172.73 $15,691.09 $71,481.64 $1,131,323.80
21 19774.6 21.80 $0.134 14.76 2.66 $89,450.75 $16,101.13 $73,349.61 $1,204,673.42
22 19814.2 21.84 $0.136 14.82 2.67 $91,788.30 $16,521.89 $75,266.40 $1,279,939.82
23 19853.8 21.89 $0.139 14.88 2.68 $94,186.93 $16,953.65 $77,233.29 $1,357,173.11
24 19893.5 21.93 $0.142 14.94 2.69 $96,648.25 $17,396.68 $79,251.56 $1,436,424.67
25 19933.3 21.97 $0.145 15.00 2.70 $99,173.89 $17,851.30 $81,322.59 $1,517,747.26
26 19973.2 22.02 $0.148 15.06 2.71 $101,765.52 $18,317.79 $83,447.73 $1,601,194.99
27 20013.1 22.06 $0.151 15.12 2.72 $104,424.88 $18,796.48 $85,628.40 $1,686,823.39
28 20053.1 22.11 $0.154 15.18 2.73 $107,153.74 $19,287.67 $87,866.07 $1,774,689.46
29 20093.2 22.15 $0.157 15.24 2.74 $109,953.91 $19,791.70 $90,162.21 $1,864,851.66
30 20133.4 22.19 $0.160 15.30 2.75 $112,827.25 $20,308.91 $92,518.35 $1,957,370.01

Energy Cost Savings Comparison Worksheet

System Information
gpm
%
$ / kWh
%
%
Schedule 40 Pipe Inside Diameter:
in
Pipe Area:
ft2
Pipe Velocity:
fps
Valve Information

Comparison Valve

Differential pressure / ft.:
K value:
Cost to use valve at the end of 1st year:
Flow coefficient (Cv):

DeZURIK/APCO or Willamette Valve

K value:
Differential pressure / ft.:
Cost to use valve at the end of 1st year:
Flow coefficient (Cv):
Cost Savings Calculations
Years:
Years:

©2025, DeZURIK, Inc.

* - Required field.
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Instructions

APCOST is a DeZURIK Energy Cost Savings Comparison tool that provides an informative method of economically comparing the cost savings achieved by using an APCO or Willamette valve when compared to one alternative valve in a pumped system.

To use the program, enter required information in designated cells.

  1. A brief project name and project engineer name may be typed in the cells at the top of the worksheet
  2. In the System Information section,
    1. Enter the design flow rate for the system into which the two valves will be compared.
    2. Enter the estimated percent increase in flow demand per year of the system.
    3. Enter the local electrical cost in dollars per kilowatt-hour.
    4. Enter the projected percent increase in electrical costs per year.
    5. Enter the efficiency of the system pump and motor.
  3. In the Valve Information section:
    1. Enter the Valve Size in inches
  4. In the Comparison Valve section
    1. Enter the name of the valve company to which the APCO/Willamette valve will be compared.
    2. Choose Cv or K Factor, whichever coefficient is known for the valve.
    3. Input the appropriate value of the coefficient when the valve is full open.
  5. In the DeZURIK/APCO or Willamette Valve section
    1. Select a valve style from the drop down box.
  6. In the Cost Savings Calculations section:
    1. Use the “Yearly Savings” drop down box to calculate the energy cost savings per year using the APCO valve at the end of the year selected.
    2. Use the “Cumulative Savings” drop down box to calculate the cumulative savings using the APCO valve after the number of years selected.
  7. Print options include the Energy Cost Savings Comparison Worksheet or the Energy Cost Savings Comparison Summary.

©2025, DeZURIK, Inc.

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Technical Information

Valve Descriptions and Loss Coefficients

Body
Style		 Description Size K
100C CRF APCO Rubber Flapper Swing Check Valve 2 1.47
3 1.19
4 1.22
6 0.98
8 1.1
10 0.9
12 0.95
14 0.74
16 0.73
18 0.54
20 0.56
24 0.68
30 1.3
36 1.3
42 1.3
48 1.3
300 CSC APCO Silent Check Valve - Wafer Style All 3.000
600 CSC APCO Silent Check Valve - Globe Style All 2.500
800 CSD APCO Slanting Disc Check Valve All 0.360
2200 VMC Willamette Metal Seated Cone Valve 6 0.111
8 0.083
10 0.077
12 0.103
14 0.110
16 0.110
18 0.090
20 0.098
24 0.094
30 0.069
36 0.065
42 0.062
48 0.055
54 0.040
60 0.036
2600 VBL Willamette Metal Seated Ball Valve 6 0.100
8 0.082
10 0.062
12 0.050
14 0.049
16 0.049
18 0.041
20 0.040
24 0.037
30 0.033
36 0.030
42 0.028
48 0.028
54 0.024
60 0.020
6000 Swing Check Valve All 1.000
9000T Double Door Check Valve 2 2.093
2.5 1.714
3 1.587
4 1.406
5 1.292
6 1.223
8 1.145
10 1.081
12 1.067
14 1.088
16 1.033
18 1.024
20 1.015
24 1.004
30 0.991
36 0.988
42 0.979
54 0.973
60 0.970
72 0.968

Schedule 40 Pipe Diameters

Outer Inside
2 2.067
2.5 2.469
3 3.068
4 4.026
5 5.047
6 6.065
8 7.982
10 10.020
12 12.000
14 13.250
16 15.250
18 17.250
20 19.250
24 23.250
30 29.000
36 34.500
42 40.500
48 46.000
54 51.750
60 57.500
66 62.250
72 69.000

Equation

Equation to calculate the energy cost dispensed for first year of using valve [Cost Per Year ($)]:

Cost Per Year =
  (a x b x c x d x 0.746 x 24hrs x 365days) / (3960 x e)

where:

  1. First year average discharge (gpm)
  2. Head loss across valve at average discharge (ft)
  3. Specific gravity of water
  4. First year average energy cost ($ / kwh)
  5. Combined motor and pump efficiency

©2025, DeZURIK, Inc.