16
(1)
(2)
(3)
(4)
Fitting Description
8 Gal/min
10 Gal/min
MT040G Coil
2.60
MT050G Coil
2.60
MT079G Coil
4.40
MT100G Coil
5.70
1 ft 1" St. Pipe
0.05
0.08
1 ft 1-1/4" St. Pipe
0.02
0.03
1 ft 1-1/2" St. Pipe
0.01
0.02
1" 90 El
0.16
0.25
1-1/4" 90 El
0.06
0.09
1-1/2" 90 El
0.04
0.06
1" Run of Tee
0.05
0.08
1-1/4" Run of Tee
0.02
0.03
1-1/2" Run of Tee
0.01
0.02
1" Branch in Tee
0.26
0.41
1-1/4" Branch in Tee
0.08
0.13
1-1/2" Branch in Tee
0.05
0.08
1" Std. Ball Valve
0.12
0.19
1-1/4" Std. Ball Valve
0.06
0.09
1-1/2" Std. Ball Valve
0.02
0.03
Taco "Flo-Chek":
#220 (1")
2.18
3.41
#220 (1-1/4")
0.84
1.31
#222 (1-1/2")
0.44
0.69
Taco "Air Scoop":
#431 (1")
0.15
0.23
#432 (1-1/4")
0.05
0.08
Boiler (**)
ft wc.
Notes:
* Includes (2) 1-1/2 x 3/4 Bushings and (2) 1-1/2 x 1 Transitions
** The Pressure Drop Through Most Cast Iron and Steel Boilers can be Ignored
1
0.53
0.83
Honeywell V8043F1101 Zone
Valve (Cv = 8)
2.31
WORKSHEET #3: Pressure Drop Calculations Through Maxi-Therm Zone
3.61
Total Head Loss Through Manifold Piping and Maxi-Therm Zone =
Pressure Drop (ft head)
at:
Quantity
Total
Allowance for Bushings and
Sudden Transitions (*)