Johnson Controls V148 Series Data Sheet
V148 Series Valve
A
Port 1
Port 3
Port 2
as specified
FIG:V148 EK_075_dim
3/4 in. V148EK Valve
1 in. V148AL Valve
Pressure connec tion and capillary
as specified
A
Port 1
Port 3
Port 2
FIG:V148AL_ 100_dim
V148 Series Three-Way Pressure-Actuated Water-Regulating Valves
Description
The V148 Series Three-Way
Pressure-Actuated Water-Regulating Valves
regulate water flow to control refrigerant head
pressure in systems with single or multiple
water-cooled condensers. The V148 valves
are designed for applications with system
water pressures of up to 350 psi (24.1 bar),
such as high-rise buildings.
V148EK and V148AL valves have an
adjustable opening point in a refrigerant
pressure range of 145 to 190 psi (10.0 to
13.1 bar). V148EK and V148AL valves are
available in 3/4 in. and 1 in. sizes. Use these
valves with standard, non-corrosive
refrigerants.
V148GK1 and V148GL1 valves have an
adjustable opening point in a refrigerant
pressure range of 200 to 400 psi (13.8 to
27.6 bar). The V148GK1 and V148GL1
Valves are available in 3/4 in. and 1 in. sizes
for use with standard, non-corrosive,
high-pressure refrigerants.
Refer to the V148 Series 3-Way
Pressure-Actuated Water-Regulating Valves
Product Bulletin (LIT-121712) for important
product application information.
Valves and Valve Accessories
Features
• no close-fitting or sliding parts in water
passages
• high water pressure design
• pressure-balanced design
• corrosion-resistant material for internal
parts
• accessible range spring
• take-apart construction
Applications
Each application is unique and requires
specific engineering data to properly size and
design a system to fulfill the appropriate
requirements. Typically, a valve is replaced
with another valve of the same size in a
properly sized and engineered system.
Code No. LIT-1900164
B
C
D
E
Pressure connect io n and capillar y
Plugged
F
C
D
E
Plugged
F
B
The performance specifications are nomina l and con form to accep table ind ustry stand ards. For applicati ons at con ditions be yond these specification s, consult th
Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2015 Johnson Controls, Inc.
R-166
Flow =
(Temp. - Temp. )
Outlet Inlet
Flow Required
1 in. High Refrigerant Pressure V148GL1 Valves
A
Port 1
Port 3
Port 2
FIG:V148GL1_100_d im
A
Port 1
Port 3
Port 2
FIG:V148GK1_075_d im
3/4 in. High Refrigerant Pressure V148GK1 Valves
Valves and Valve Accessories
V148 Series Three-Way Pressure-Actuated Water-Regulating Valves
(Continued)
Valve Dimensions, Inches (Millimeters)
Model Nominal
Valve Size
V148EK-1C 3/4 in. 3-3/8 (86) 2-3/16 (56) 9 (229) 4-3/16 (106) 1-3/4 (44) 3 (76)
V148GK1-001C 3/4 in. 3-3/8 (86) 2-3/16 (56) 9-13/16 (249) 4-3/16 (106) 1-3/4 (44) 3-13/16 (97)
V148AL-1C 1 in. 4-3/4 (121) 2-3/4 (71) 12 (305) 5-15/16 (151) 2 (51) 4 (102)
V148GL1-001C 1 in. 4-3/4 (121) 2-3/4 (71) 12-1/2 (318) 5-15/16 (151) 2 (51) 4-1/2 (115)
A B C D E F
Plugged
B
C
D
E
F
C
D
E
Plugged
F
B
Selection
To make a rough field estimate of the size of valve for an application,
find the valve size by locating a point on a flow chart that satisfies these
requirements:
• water flow required by the condenser (Flow)
• refrigerant head pressure rise (P
• available water pressure (P
Follow these steps, and use the information obtained to locate a point
on one of the flowcharts that satisfies all three steps.
1. Take the water flow required by the condenser (Flow) from
information provided by the manufacturer of the condensing unit. If
the manufacturer’s information is unavailable, use the following
information to make a rough approximation of maximum water flow
in gallons per minute (gpm) (cubic meters per hour [m
• System Capacity (Tons of Refrigeration)
• Outlet Water Temperature (Temp.
• Inlet Water Temperature (Temp.
The performance specifications are no minal and co nform t o acceptab le ind ustry standar ds. For appl ications at condition s beyond these specifica tions, consult th
Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2015 Johnson Controls, Inc.
AVAIL
RISE
)
Inlet
)
Outlet
)
Calculate the flow using the following formula:
Tons of Refrigeration x 30
FIG:flw_eqn
Note: If the outlet temperature is unknown, assume it to be 10F
(5.6C) above the inlet temperature.
2. Determine refrigerant head pressure rise above the valve opening
point (P
3
/hr]):
a. The Valve Closing Pressure (P
refrigerant pressure at the highest ambient temperature the
refrigeration equipment experiences in the Off cycle. Use a
)
Pressure-Temperature Chart for the refrigerant selected to find
this pressure.
b. To approximate the Valve Opening Pressure (P
about 7 psi (0.5 bar) for EK and AL models or 10 psi (0.7 bar) for
GK1 and GL1 models to the Valve Closing Pressure.
R-167
) using the following steps:
RISE
) is equal to the
CLOSE
OPEN
), add
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