Page 206 - DelcoSalesPlayBook2020!

Capacity Flow capacity chart identifies valve performance based
upon rated water velocity up to 25fps
Series 957, 957N, 957Z flow curves as tested by Underwriters • Service Flow is typically determined by a rated velocity
Laboratory. of 7.5fps based upon schedule 40 pipe.
• Rated Flow identifies maximum continuous duty
Flow characteristics collected using butterfly shutoff valves performance determined by AWWA.
• UL Flow Rate is 150% of Rated Flow and is not
Horizontal N-Pattern Z-Pattern recommended for continuous duty.
• AWWA Manual M22 [Appendix C] recommends that the
maximum water velocity in services be not more than 10fps.

2 ⁄2" 6"
1
psi Service Flow Rated Flow *UL Rated Flow psi
18 18 Service Flow Rated Flow *UL Rated Flow
16 Z 16 Z N
N
14 14 H
(*FRICTION LOSS)
PSI DROP (*FRICTION LOSS) 12 H PSI DROP 12
10
10
6 8 8 6
0 50 100 150 200 250 300 350 gpm 0 300 600 900 1200 1500 gpm
0 190 380 570 760 950 1140 1330 lpm 0 1140 2280 3420 4560 5700 lpm
7.5 15 fps 7.5 12 fps
3" 8"
psi Service Flow Rated Flow *UL Rated Flow
16 psi Service Flow Rated Flow *UL Rated Flow
18 Z
14 N 16 N
12 Z 14 H
USC 6" C400BFG PSID PSI DROP (*FRICTION LOSS) 6" Colt BFG H PSI DROP (*FRICTION LOSS) 12
16 10 10
14
12 8 8
10
6 6
8
6 0 100 200 300 400 500 gpm 0 500 1000 1500 2000 2500 gpm
4 0 380 760 1140 1520 1900 lpm 0 1900 3800 5700 7600 9500 lpm
7.5 15 fps 7.5 10 fps
2
0
4" 10"
1600
1400
800
1000
600
psi 0 200 400 Service Flow Flow (GPM) Rated Flow 1200 *UL Rated Flow
26 Z psi Service Flow Rated Flow *UL Rated Flow
16
N Z
22 H 14 N
(*FRICTION LOSS)
(*FRICTION LOSS)
18 12 H
PSI DROP 14 PSI DROP 10
10 8
6
6 4
0 100 200 300 400 500 600 700 800 gpm 0 500 1000 1500 2000 2500 3000 3500 gpm
0 380 760 1140 1520 1900 2280 2660 3040 lpm 0 1900 3800 5700 7600 9500 11400 13300 lpm
7.5 13 fps 7.5 10 fps
4" BFG Horizontal 6" BFG Horizontal
4" Colt BFGs
USC 4" C400BFG PSID psi Service Flow Rated Flow USC 6" C400BFG PSID psi Service Flow Rated Flow *UL Rated Flow
*UL Rated Flow
6" Colt BFG
25 16
25
16
14
20 14
20
12
12
15 10
10
15
8
PSI DROP (*FRICTION LOSS) 10 10 PSI DROP (*FRICTION LOSS) 6 8 6
5
5
2
2 4 4
0 0 0
0
0 0 100 200 300 400 500 600 700 800 gpm 0 0 200 400 400 600 800 1000 1200 1400 1600 gpm
500
100
300
600
700
800
200
400
1000
800
600
200
1600
1400
1200
Flow (GPM)
0 380 760 1140 1520 1900 2280 2680 3040 lpm 0 760 1520 2280 3040 3800 4560 5300 6060 lpm
7.5 13 fps 7.5 12 fps
USA: Tel: (978) 689-6066 • Fax: (978) 975-8350 • Watts.com
Canada: Tel: (905) 332-4090 • Fax: (905) 332-7068 • Watts.ca
Latin America: Tel: (52) 55-4122-0138 • Watts.com
ES-957_957N_957Z 1944 © 2019 Watts
4" Colt BFGs
USC 4" C400BFG PSID
25
20
15
10
5
0
0 100 200 300 400 500 600 700 800