Lochinvar VAL2123 - Manual (Page 6)

Figure 14_2" - Flow vs. Pressure Drop
Figure 15_2 1/2" - Flow vs. Pressure Drop
FLOW vs. PRESSURE DROP
FLOW IN U.S. GPM
Pressure Drop, PSID
Figure 13_1 1/2" - Flow vs. Pressure Drop
6 of 8 INS7238 Rev C
Maintenance instructions
The LTV valve is maintenance free. It does not require regular
cleaning or calibration. In most installations, the 1-1/2" and 2"
valves are hard piped into place and do not afford access. The
2-1/2" valve has flanged connects which allows removal.
If the valve becomes unable to maintain a consistent inlet water
temperature of 125°F during steady state firing conditions, replace
the valve or the wax element inside the valve.
The recommended maximum high
temperature to the valve should be 175°F; the
absolute maximum is 195°F.
ƽ WARNING