2025 Nelsen Corporation Catalog - Catalog - Page 431
System Sizing Tables 17
To use this chart, determine if the fixtures are open to the public or are for private use. Multiply the actual number of
fixtures by the weighted value listed in the chart below. Take the total value to the following page.
Occupancy
Type
Cold Value
Hot Value
Total Value
Water Closet
Water Closet
Urinal
Urinal
Lavatory
Bathtub
Shower
Service Sink
Kitchen Sink
Drinking Fountain
Dish Machine
Laundry Machine
Laundry Machine
Water Closet
Water Closet
Lavatory
Bathtub
Shower Stall
Kitchen Sink
Laundry
Dishwasher
Clothes Washer
Public
Public
Public
Public
Public
Public
Public
Public
Public
Public
Restaurant
Public
Public
Private
Private
Private
Private
Private
Private
Sink Private
Private
Private
Flush Valve
Flush Tank
1" Valve
3/4" Valve
Faucet
Faucet
Mixing Valve
Faucet
Faucet
Valve
Valve
8#
16#
Flush Valve
Flush Tank
Faucet
Faucet
Mixing Valve
Faucet
Faucet
Automatic
8#
10
5
10
5
1.5
3
3
2.25
3
0.25
2.25
3
6
3
0.75
1.5
1.5
1.5
2.25
1.5
1.5
3
3
2.25
3
1
2.25
3
0.75
1.5
1.5
1.5
2.25
1
1.5
10
5
10
5
2
4
4
3
4
0.25
1
3
4
6
3
1
2
2
2
3
1
2
Technical & Engineering
Fixture
SCHOOLS
Number of
Students
Gallons per day
required
Peak Demand
with flush valves
Peak Demand
with flush tanks
HOT ONLY
Peak Flow
HOT ONLY
Peak Flow
100
200
300
400
500
800
1000
2,500
5,000
7,500
10,000
12,500
20,000
25,000
60
90
120
150
180
250
300
30
50
80
90
100
130
160
15
23
30
40
50
60
70
500
1,200
1,800
2,400
3,000
4,800
6,000
APARTMENTS AND MOBILE HOME PARKS
Units
4
5
6
8
10
15
20
30
40
50
100
All Soft
720
900
1,000
1,440
1,800
2,700
3,600
5,400
7,200
9,000
18,000
Peak Flow
22
25
30
40
50
75
90
110
125
140
220
Hot Only
240
300
360
480
600
900
1,200
1,800
2,400
3,000
6,000
Call Nelsen Toll-Free from Anywhere in the U.S. - 800.362.9686
All prices and products subject to change without notice. ©Nelsen Corporation
Hot Peak Flow
12
15
20
26
30
45
45
65
75
85
110
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