Specifications

18
ALTITUDE
127-1 (Globe) / 1127-1 (Angle)
ALTITUDE VALVE - ONE WAY FLOW (TANK FILL)
Provides automatic filling of elevated tanks or reservoirs. When the
altitude control senses a drop in level below the predetermined set-
point the valve opens to fill tank. Supply pressure is greater than
static head pressure. Discharge of the tank is by a separate line.
NOTE:
Adjustment range: 5-20 FT.
10-75 FT.
50-200 FT.
Additional combination functions:
127-11(Globe) / 1127-11(Angle) Altitude Valve - One Way Flow
(Tank Fill) - Delayed Opening for Adjustable Tank Draw-Down
Adjustment range delayed level drop: 2-15 FT.
QUICK SIZING: Valve size, line size or one size smaller.
Points to consider:
– Refer to Engineering Data - Flow Capacity Chart
– Pressure drop at required flow
Refer to Engineering Data - Pressure Drop Chart
– Inlet pressure vs. tank height to fill
– If valve size required is smaller than line size, consider ACV 6127-1
Consult Watts ACV representative/factory
V
ALVE FUNCTION
– Opens when reservoir level drops below pilot setting (adjustable)
– Closes when reservoir level reaches pilot setting
C
OMPONENTS
1. Main Valve
2
. Accelerator Control
3. Altitude Control
4. Check Valve
5. Adj. Opening Speed
6. Adj. Closing Speed
7. 3-Way Ball Valve
P. Position Indicator
FC – Flo-Clean Strainer
ACCESSORIES
Located as indicated ❏ X - Isolation Cocks
Included as marked ❏ Y - Y Strainer (Eliminates Flo-Clean)
❏ L - Limit Switch
127-2 (Globe) / 1127-2 (Angle)
ALTITUDE VALVE - TWO WAY FLOW (TANK FILL & DISCHARGE)
Provides automatic filling of elevated tanks or reservoirs. Supply
pressure is greater than static head pressure. When the altitude con-
trol senses a drop in level below the predetermined set-point the
valve opens to fill tank. The valve opens for tank discharge when
tank head pressure is greater than valve inlet pressure.
NOTE:
Adjustment range: 5-20 FT.
10-75 FT.
50-200 FT.
QUICK SIZING: Valve size, line size or one size smaller.
Points to consider:
– Tank discharge flow requires valve inlet (system pressure) to be
2 psig less than tank head pressure
– Refer to Engineering Data - Flow Capacity Chart
– Pressure drop at required flow
Refer to Engineering Data - Pressure Drop Chart
– Inlet pressure vs. tank height to fill
– If valve size required is smaller than line size, consider ACV 6127-2
Consult Watts ACV representative/factory
F
low Direction Shown: Under the Seat
Optional ‘R’ Flow Over the Seat: 127-1R/1127-1R
VALVE FUNCTION
– Tank fill
– Opens when head pressure drops below pilot setting (adjustable)
– Closes when reservoir level reaches pilot setting
– Tank Discharge
– Opens when valve inlet / system pressure is below tank head
COMPONENTS
1. Main Valve
2. Accelerator Control
3. Altitude Control
4. Check Valve
5. Adj. Opening Speed
6. Adj. Closing Speed
7. 3-Way Ball Valve
P. Position Indicator
ACCESSORIES
Located as indicated ❏ X - Isolation Cocks ❏ FC - Flo-Clean Strainer
Included as marked ❏ Y - Y Strainer ❏ L - Limit Switch