Watts LFP3 User Manual
Lead free, Watts lfp3, Multi-orifice flow control for tankless heaters
Multi-Orifice cylinder
adjusts to
3, 3
1
⁄
2
or 4 gpm.
Dimensions
Model
Size
diMenSionS
Weight
A
B
C
LFP3
1
⁄
2
"
1
5
⁄
8
"
1
⁄
2
"
2"
6 ozs.
For Commercial and Residential Flow
ES-LFP3
LEAD FREE
*
Job Name –––––––––––––––––––––––––––––––––––––––––––
Contractor ––––––––––––––––––––––––––––––––––––––––––––
Job Location –––––––––––––––––––––––––––––––––––––––––
Approval –––––––––––––––––––––––––––––––––––––––––––––
Engineer –––––––––––––––––––––––––––––––––––––––––––––
Contractor’s P.O. No. ––––––––––––––––––––––––––––––––––
Approval –––––––––––––––––––––––––––––––––––––––––––––
Representative ––––––––––––––––––––––––––––––––––––––––
*The wetted surface of this product contacted by consumable
water contains less than 0.25% of lead by weight.
Watts LFP3
Multi-Orifice Flow Control for
Tankless Heaters
Adjusts to: 3, 3
1
⁄
2
or 4 gpm
Watts No. LFP3 Flow Control valve is designed to limit the flow of
water to equipment and is used for tankless heater installations. It
features a multi-orifice design which lets you select a flow of 3, 31⁄2
or 4 gpm, simply and quickly, by turning the cap to the desired set-
ting. If a different setting is desired, simply move the adjusting cap to
the desired setting, locating this over the matching line on the body.
Capacity
Watts No. LFP3 Flow Control is designed to give the rated capac-
ity in gallons per minute as numbered on the adjustment cap at 50
psig supply pressure. For other pressures, refer to the Flow Table
for corresponding adjustment setting. It is recommended that supply
pressure be determined with a gauge to assure accurate flow. For
example, 80 psi supply pressure results in the following:
AdjuStMent
Setting no.
FloW gPM
3
3.8
3
1
⁄
2
4.4
4
5.1
WATTS
No. P3
No. Andover, MA
2
1
⁄
2
3 3
1
⁄
2
4
G.P.M.
@
50 P.S.I.
▼
Vertical marker line just to left of 3 gpm marker line signifies
minimum adjustable volume (approx. 21⁄2 gpm) when supply
pressures exceed 50 psi.
Flow Table (gpm)
SuPPly
PreSSure PSi
AdjuStMent Setting no.
3
3
1
⁄
2
4
30
2.3
2.7
3.1
40
2.7
3.1
3.6
*50
3
3.5
4
60
3.3
3.8
4.4
70
3.5
4.1
4.7
80
3.8
4.4
5.1
90
4
4.7
5.3
100
4.2
4.9
5.6
110
4.5
5.2
5.9
120
4.6
5.4
6.2
130
4.8
5.6
6.4
140
5
5.8
6.7
150
5.2
6.1
6.9
*Adjustment Cap Settings
ES-LFP3 1240
© 2012 Watts
USA: Tel: (978) 688-1811 • Fax: (978) 794-1848 • www.watts.com
Canada: Tel: (905) 332-4090 • Fax: (905) 332-7068 • www.watts.ca
Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please contact Watts Technical Service. Watts
reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications
on Watts products previously or subsequently sold.
A Watts Water Technologies Company
A
B
C
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